Show HN: Cosigny - Crowd source the best credit card and loan terms. https://ift.tt/JjPyzvu

Show HN: Cosigny - Crowd source the best credit card and loan terms. The goal is to create spreadsheet with crowd sourced data regarding credit products and profiles so we can see how we measure up and find the best deals. Don't go too hard on me. I linked a few google sheets together. Hope you find it useful. https://ift.tt/C7toZV0 May 18, 2023 at 10:41AM

Show HN: Smallville – Create Generative Agents for simulations and games https://ift.tt/VA6IQ2u

Show HN: Smallville – Create Generative Agents for simulations and games https://ift.tt/EL64pik May 18, 2023 at 01:11AM

Show HN: LogSpend – Gain full visibility and control over your OpenAI costs https://ift.tt/j3hTRcH

Show HN: LogSpend – Gain full visibility and control over your OpenAI costs https://logspend.com/ May 18, 2023 at 01:06AM

Show HN: Printnanny.ai, Monitoring for 3D Printers https://ift.tt/6dDlE4s

Show HN: Printnanny.ai, Monitoring for 3D Printers https://printnanny.ai/ May 17, 2023 at 06:39PM

Show HN: Generative wall art, running on a Raspberry Pi https://ift.tt/THctPMi

Show HN: Generative wall art, running on a Raspberry Pi https://twitter.com/adamfuhrer/status/1657070909469884429 May 17, 2023 at 06:36PM

Show HN: CounterDB, to persist your likes/dislikes counts https://ift.tt/QZdJMiY

Show HN: CounterDB, to persist your likes/dislikes counts A Solution to durably store your counts. For example number of likes/dislikes on a post. Its time complexity is O(1). Single header only C++ file for storing and retrieving numbers. It does this without increasing the file size, as its not append only DB. Which also means it can be slower on simultaneous writes to an index. Well if your task is just to store likes/dislikes counts, than it must not be much of a problem. As reads are done more than writes for such cases. https://ift.tt/pyZvdCe May 17, 2023 at 11:20AM

Show HN: A nihilist All-hands Meeting Simulator https://ift.tt/eI3YVhb

Show HN: A nihilist All-hands Meeting Simulator I was just digging through some old projects to find a link for a potential new employer and stumbled upon this reminder of how much I enjoyed middle-management office politics. https://ift.tt/8pxYCnJ May 17, 2023 at 05:03PM

Show HN: Zig Without Unused Variable Errors https://ift.tt/SenYPZt

Show HN: Zig Without Unused Variable Errors I hacked the flag --allow-unused into the Zig compiler to turn off the unused variable error. https://ift.tt/5DkfQ0x May 17, 2023 at 08:57AM

Show HN: Oblivus GPU Cloud – Affordable and scalable GPU servers from $0.29/hr https://ift.tt/xJyQzUD

Show HN: Oblivus GPU Cloud – Affordable and scalable GPU servers from $0.29/hr Greetings HN! This is Doruk from Oblivus, and I'm excited to announce the launch of our platform, Oblivus Cloud. After more than a year of beta testing, we're excited to offer you a platform where you can deploy affordable and scalable GPU virtual machines in as little as 30 seconds! https://ift.tt/rqkmaDT - What sets Oblivus Cloud apart? At the start of our journey, we had two primary goals in mind: to democratize High-Performance Computing and make it as straightforward as possible. We understand that maintaining GPU servers through major cloud service providers can be expensive, with hidden fees adding to the burden of running and maintaining servers. Additionally, the cloud can sometimes be overly complex for individuals who don't have much knowledge but still require powerful computing resources. That's why we decided to create a platform that offers affordable pricing, easy usability, and high-quality performance. - Features 1. Fully customizable infrastructure that lets you switch between CPU and GPU configurations to suit your needs. 2. Transparent and affordable per-minute-based Pay-As-You-Go pricing with no hidden fees. Plus, free data ingress and egress. (Pricing: https://ift.tt/lenH28i ) 3. Optimized cost with storage and IP address-only billing when the virtual machine is shut down. 4. Each virtual machine comes with 10Gbps to 40Gbps public network connectivity. 5. NVMe ($0.00011/GB/hr) and HDD ($0.00006/GB/hr) storage that is 3x replicated to fulfill your storage needs. 6. Choose from a variety of cutting-edge CPUs and 10 state-of-the-art GPU SKUs. (Availability: https://ift.tt/WKuFdow ) 7. OblivusAI OS images come with pre-installed ML libraries, so you can start training your models right away without the hassle of installing and configuring the necessary libraries. 8. If you're working with a team, utilize our organization feature to simplify the billing process. Everyone in your organization uses the same billing profile, so you don't need to keep track of multiple accounts. 9. No quotas or complex verification processes. Whether you represent a company, an institution, or you're a researcher, you have full access to our infrastructure without any limitations. 10. Easy-to-use API with detailed documentation so that you can integrate your code with ours. - Pricing At Oblivus Cloud, we provide pricing that is affordable, transparent, and up to 80% cheaper than major cloud service providers. Here is a breakdown of our pricing: 1. CPU-based virtual machines starting from just $0.019/hour. 2. NVIDIA Quadro RTX 4000s starting from $0.27/hour. 3. Tesla V100s starting from $0.51/hour. 4. NVIDIA A40s and RTX A6000s starting from $1.41/hour. We also offer 6 other GPU SKUs to help you accurately size your workloads and only pay for what you need. Say goodbye to hidden fees and unpredictable costs. If you represent a company, be sure to register for a business account to access even better pricing rates. - Promo Code Join us in celebrating the launch of Oblivus Cloud by claiming your $1 free credit! This may sound small, but it's enough to get started with us and experience the power of our platform. With $1, you can get over 3 hours of computing on our most affordable GPU-based configuration, or over 50 hours of computing on our cheapest CPU-based configuration. To redeem this free credit, simply use the code HN_1 on the 'Add Balance' page after registration. Register now at https://ift.tt/SyDr7Zo - Quick Links Website: https://oblivus.com/ Console: https://ift.tt/ZPazprH Company Documentation: https://ift.tt/1PJnmrg API Documentation: https://ift.tt/fWgxAcl If you have any questions, feel free to post them below and I'll be happy to assist you. You can also directly email me at doruk@oblivus.com! https://oblivus.com May 16, 2023 at 01:00PM

Show HN: My passion project for the last 6 months https://ift.tt/4Xl3Wrn

Show HN: My passion project for the last 6 months https://ift.tt/3YKAyRT May 16, 2023 at 10:27AM

Show HN: Query Hacker News via ChatGPT https://ift.tt/NRJq4hG

Show HN: Query Hacker News via ChatGPT https://ift.tt/1sRr9VP May 16, 2023 at 09:58AM

Show HN: dreamGPT: What if LLM hallucinations were a feature and not a bug? https://ift.tt/CrxTlfE

Show HN: dreamGPT: What if LLM hallucinations were a feature and not a bug? The first GPT-based solution that uses hallucinations from LLMs for divergent thinking to generate new and novel ideas. Hallucinations are often seen as a negative thing, but what if they could be used for our advantage? dreamGPT is here to show you how. The goal of dreamGPT is to explore as many possibilities as possible, as opposed to most other GPT-based solutions which are focused on solving specific problems. https://ift.tt/bhnrUHM May 16, 2023 at 04:32AM

Show HN: Legend-State 1.0 – The fastest React state library https://ift.tt/9WMsVnd

Show HN: Legend-State 1.0 – The fastest React state library After almost a year of development and iterating, we just released Legend-State 1.0. It's the fastest React state library and is very easy to use, based on Observables (Signals) with fine-grained reactivity and built-in persistence. I'd love to know what you think, and I'm also happy to answer any general JavaScript performance questions if you want since I've gone very deep into optimizing . https://ift.tt/PsJZX1A https://ift.tt/YIBUwz0 May 16, 2023 at 04:36AM

Show HN: Hat-syslog – Syslog Server with real time web UI https://ift.tt/9WMTgbf

Show HN: Hat-syslog – Syslog Server with real time web UI https://ift.tt/Jxb5RBO May 16, 2023 at 03:35AM

Show HN: Openlayer – Test, fix, and improve your ML models https://ift.tt/zn6tUXa

Show HN: Openlayer – Test, fix, and improve your ML models Hey HN, my name is Vikas, and my cofounders Rish, Gabe and I are building Openlayer: http://openlayer.com/ Openlayer is an ML testing, evaluation, and observability platform designed to help teams pinpoint and resolve issues in their models. We were ML engineers experiencing the struggle that goes into properly evaluating models, making them robust to the myriad of unexpected edge cases they encounter in production, and understanding the reasons behind their mistakes. It was like playing an endless game of whack-a-mole with Jupyter notebooks and CSV files — fix one issue and another pops up. This shouldn’t be the case. Error analysis is vital to establishing guardrails for AI and ensuring fairness across model predictions. Traditional software testing platforms are designed for deterministic systems, where a given input produces an expected output. Since ML models are probabilistic, testing them reliably has been a challenge. What sets Openlayer apart from other companies in the space is our end-to-end approach to tackling both pre- and post-deployment stages of the ML pipeline. This "shift-left" approach emphasizes the importance of thorough validation before you ship, rather than relying solely on monitoring after you deploy. Having a strong evaluation process pre-ship means fewer bugs for your users, shorter and more efficient dev-cycles, and lower chances of getting into a PR disaster or having to recall a model. Openlayer provides ML teams and individuals with a suite of powerful tools to understand models and data beyond your typical metrics. The platform offers insights about the quality of your training and validation sets, the performance of your model across subpopulations of your data, and much more. Each of these insights can be turned into a “goal.” As you commit new versions of your models and data, you can see how your model progresses towards these goals, as you guard against regressions you may have otherwise not picked up on and continually raise the bar. Here's a quick rundown of the Openlayer workflow: 1. Add a hook in your training / data ingestion pipeline to upload your data and model predictions to Openlayer via our API 2. Explore insights about your models and data and create goals around them [1] 3. Diagnose issues with the help of our platform, using powerful tools like explainability (e.g. SHAP values) to get actionable recommendations on how to improve 4. Track the progress over time towards your goals with our UI and API and create new ones to keep improving We've got a free sandbox for you to try out the platform today! You can sign up here: https://ift.tt/JVA2Rml . We are also soon adding support for even more ML tasks, so please reach out if your use case is not supported and we can add you to a waitlist. Give Openlayer a spin and join us in revolutionizing ML development for greater efficiency and success. Let us know what you think, or if you have any questions about Openlayer or model evaluation in general. [1] A quick run-down of the categories of goals you can track: - Integrity goals measure the quality of your validation and training sets - Consistency goals guard against drift between your datasets - Performance goals evaluate your model's performance across subpopulations of the data - Robustness goals stress-test your model using synthetic data to uncover edge cases - Fairness goals help you understand biases in your model on sensitive populations https://ift.tt/9eST8RW May 15, 2023 at 11:05PM

Show HN: Sha2git brings code hosting to secure SHA-2 Git repositories https://ift.tt/9b1XJNk

Show HN: Sha2git brings code hosting to secure SHA-2 Git repositories https://sha2git.com/ May 15, 2023 at 08:44AM

Show HN: Terminal Notifications for Long Processes over Slack and Discord -Nudge https://ift.tt/QDbNEe3

Show HN: Terminal Notifications for Long Processes over Slack and Discord -Nudge Hi HN! Nudge is an effortless notifier for long-running terminal commands. No prompt needed, you can set it up to automatically notify you for completion of commands running over X minutes over Mac, Slack, and Discord. It can even notify you of commands running over ssh without installing it on the remote host. I built it to notify me of long, monolithic builds at my workplace. Check out Nudge Notifier at NudgeNotifier.com https://ift.tt/OQHUZ96 May 14, 2023 at 11:51PM

Show HN: Online and CLI Tool to backup password protected data with QR codes https://ift.tt/Hqmladn

Show HN: Online and CLI Tool to backup password protected data with QR codes https://ift.tt/yafvNOH May 14, 2023 at 11:47PM

Show HN: Run AWS Cedar Policy Like OPA https://ift.tt/ipejmnt

Show HN: Run AWS Cedar Policy Like OPA https://ift.tt/iP9IYk7 May 15, 2023 at 02:55AM

Show HN: I built my first Cyberdeck https://ift.tt/JHxRcm8

Show HN: I built my first Cyberdeck https://ift.tt/xGBviKP May 15, 2023 at 12:08AM

Show HN: Tack, a fast lightweight scripting language for games and embedding https://ift.tt/1L9ztUa

Show HN: Tack, a fast lightweight scripting language for games and embedding https://ift.tt/i2HoaCt Hi HN! Tack is a scripting language I've been working on sporadically for the past year or so, and intensely for the past few weeks. It originated out of a desire for something that was like Lua, but with a more familiar syntax, and without some of the other surprises in Lua such as the 1-indexed tables. It's also been a great learning project, and a very satisfying challenge! While the current version is early beta at best, I hope to continue working on it and maybe see some adoption. Despite the relative lack of optimization, I'm very pleased with the performance so far - although I haven't done a huge amount of benchmarking, it seems to be significantly faster than the stock Lua 5.4 interpreter for the quicksort test, and the btrees test (copied from the Computer Language Benchmarks Game). The language is designed for embedding in C++ programs, and is written in C++ more or less from scratch including the handwritten recursive descent parser, and a register-based compiler/interpreter. The only dependency other than the standard library is my C++ adaptation of the khash library used for the object type - a from-scratch hashmap seemed not worth the trouble. Quick code example - more examples in the repo! fn quicksort(arr) { const n = #arr if n <= 1 { return arr } " find the midpoint " let l = min(arr) let r = max(arr) if r == l { return arr } const mid = (l + r) / 2 " split array into upper and lower " const upper = filter(arr, fn(x) { return x < mid }) const lower = filter(arr, fn(x) { return x >= mid }) " recursively sort the upper and lower sub-arrays and join the result" return quicksort(lower) + quicksort(upper) } let A = [] for i in 0, 1000000 { A << random() } let before = clock() let B = quicksort(A) let after = clock() print("Time taken: ", after - before, "seconds") Building requires just cmake and a C++20 compiler - tested with MSVC 2022, g++11 on WSL and Clang 15 on M1 https://craftinginterpreters.com was a great help with implementing closures, as I had gone down a blind alley with my first approach for locating the closed-over variables. However I have taken a slightly different approach towards boxing. As I do intend to use this for some small games myself going forward, there is a standard library already, and plans to expand it. I also intend to release a GLFW-based mini game framework along with precompiled binaries, so hobbyists (and younger relatives!) may use it without needing a full compiler toolchain. I would love if anyone is interested enough to try it out! James https://github.com/PlumeCat/tack May 14, 2023 at 11:09PM

Show HN: Torquigen,create symmetrical animated GIFs from your images https://ift.tt/Xg0d1sE

Show HN: Torquigen,create symmetrical animated GIFs from your images This is the first code I've written in WebGL2. It supports Chrome, Firefox, and Safari (macOS or ipadOS). https://torquigen.app May 14, 2023 at 10:09PM

Show HN: ts-npm-template – Template to bootstrap NPM package with TypeScript https://ift.tt/Arpk9LN

Show HN: ts-npm-template – Template to bootstrap NPM package with TypeScript https://ift.tt/6wmqlnp May 14, 2023 at 06:06PM

Show HN: WhyBot, making GPT-4 question itself https://ift.tt/K9CzdNc

Show HN: WhyBot, making GPT-4 question itself Hi HN — we’re John and Vish! We built WhyBot, a tool to help you deeply explore a question or topic. You ask a question, and WhyBot responds by building an ever-expanding knowledge graph. It does this by recursively generating answers and follow-up questions. You can change its persona to change the flavor of the generations (try toddler mode!). We originally built this for the AngelList Agent Hackathon ( https://twitter.com/AqeelMeetsWorld/status/16502799744050421... ) and got a lot of interest from folks asking to play around with it. So we thought it’d be fun to brush it up and release it as a web app! It’s a work in progress and we plan on adding more features, such as saving, sharing, focusing on one branch and potentially executing code. We hope you enjoy playing around with it and would love to hear any of your feedback or thoughts. https://ift.tt/z6XGEpD May 14, 2023 at 09:47AM

Show HN: Bytebase – a GUI-based database schema change tool for developers https://ift.tt/93qtcKH

Show HN: Bytebase – a GUI-based database schema change tool for developers https://ift.tt/BrKJOlP May 13, 2023 at 11:36PM

Show HN: MotivationalSMS – Daily Inspirational Quotes by SMS https://ift.tt/1moeuLE

Show HN: MotivationalSMS – Daily Inspirational Quotes by SMS https://ift.tt/Gdb1rTj May 13, 2023 at 05:31PM

Show HN: React 18.2 and Express 4.18 TypeScript SSR ESM stack https://ift.tt/HXKUnRF

Show HN: React 18.2 and Express 4.18 TypeScript SSR ESM stack https://ift.tt/K6zrPGj May 13, 2023 at 12:55PM

Show HN: Kaizen, music updated over time like software https://ift.tt/eavSJip

Show HN: Kaizen, music updated over time like software Hi, I'm co-founder and CTO of Kaizen. The project started as just a weekend project with me and a music producer friend. It has since grown into a community of artists looking to share their music more frequently and engage with their fans more consistently. We've just launched on ProductHunt: https://ift.tt/TL34fN9 We would love any thoughts or feedback! https://kaizen.place/ May 13, 2023 at 01:16PM

Show HN: A game about guessing which YT video is the most popular https://ift.tt/0XrFngb

Show HN: A game about guessing which YT video is the most popular https://ift.tt/bQ89xGf May 13, 2023 at 06:36AM

Show HN: React.js LLM Agent (open-source) https://ift.tt/IrqWsKa

Show HN: React.js LLM Agent (open-source) I've been working in the couple of months on an experiment, trying to make GPT-4 much more useful for web development / React, writing production code that is relevant to any repository without copy pasta from ChatGPT or having small snippets of auto-complete from Copilot that are not in your context. The agent is taking a user story text and generating and composing multiple react components to generate the relevant screens, based on atomic design principles, with Typescript, TailwindCSS and RadixUI. Is is still experimental but very interesting results, I would like to get your feedback on it! It is completely open-sourced, looking for contributors! https://ift.tt/CeFmGPM May 12, 2023 at 03:06PM

Show HN: Infinity Whiteboard, Designed for Teachers https://ift.tt/jGo8DSL

Show HN: Infinity Whiteboard, Designed for Teachers I've created a whiteboard which I use every lesson when teaching maths, though it can be used for anything. It currently has a few hundred teachers using it daily. It's designed for use with touch-screen interactive whiteboards in classrooms, and stays in sync with your phone/tablet/whatever without signup/login. You can also find me on Twitter where I post updates etc: https://twitter.com/jakegmaths Some features and cool things: * Sync devices without signup - offline by default, just hit 'sync devices' and use the same code on multiple devices to sync * Touch-first - 1 finger draws; 2 finger pan/zoom; 3 finger gestures like changing pen colour * Add images - when teaching, this is usually photos of student work taken on my phone and auto-sync'd to the whiteboard at the front of the room * Add PDFs - when teaching, these are usually past paper exams which I then annotate over with the class * Zen mode - 3 finger tap or hit the ∞ icon to hide the UI; something I use every lesson so students can focus on the actual maths (there's also a fullscreen button when not on iOS) * Visualiser - often when teaching we'll work on paper with a webcam aka 'visualiser' pointing down at it; this projects that to the main whiteboard, with optional cropping, freeze-frame and snapshots * Screencast - many teachers use eg PowerPoint to teach; instead, I'll use PowerPoint in edit/design mode rather than slideshow mode, with a locally-cast cropped portion of that on the main whiteboard at the front of the room. This enables me to eg edit my PowerPoint as I go and use all the PowerPoint tools not available in slideshow mode * Instant replay - hit the play button to play back all the scribblings currently showing on the screen * Magnet mode - when sync'd with another device, use the magnet icon so the other device follows you. Most of my teaching is now via a tablet-with-stylus anywhere in the room, and as I pan/zoom around with the tablet the main whiteboard comes with me... but only when I want it to by activating the magnet * Student mini-whiteboards (MWBs) - if my students have devices and I want them to use them, I 'sync devices' then enable student MWBs and each student has a live copy of the whiteboard, and I can see what they write and can showcase any student instantly on the main board * PWA support - install as a PWA and you can download whiteboards as .iwb files which can then be double-clicked to open/edit on desktop * Free - I have no plans to charge for this Other things you may find interesting from a tech perspective: * The client is a single <5,000 lines HTML file, with JS, CSS, SVG-favicon all inlined (plus PDF.js lazily loaded if you add a PDF) * This is vanilla Javascript with no frameworks or libraries (except PDF.js) and no minification or build scripts - just view-source and check out how ugly all my code is! * 77.6kB for everything (except PDF support)... the size of 'modern' websites frankly disgusts me * The server is just a single ~500 line Javascript file and runs on Deno (also ported to Bun but unstable for now) and really just serves some static files, deals with websockets and temporarily stores images people add * Costs ~£5/month on Heroku * There's no database or any long-term persistence - Heroku servers restart every 24h and nothing is saved beyond that; it's all ephemeral https://www.mathsuniverse.com/infinity May 12, 2023 at 06:56PM

Show HN: Explore career opportunities in AI-first companies https://ift.tt/sBycYfe

Show HN: Explore career opportunities in AI-first companies Like many unemployed right now, I've been playing with LLMs and learning a lot. It's an exciting space right now, with many opportunities. So I curated over 100 companies in the space and joined all their opportunities (not only tech) in a single site. I believe it can be interesting for many people recently affected by layoffs and looking to restart in a market that is booming — for better or worse. Exploring the data about the market is also something that I'm starting to look into [1]. Companies can be added for free and get highlighted by sponsoring the site. I hope that someone out there who is searching for a new job finds this helpful. 1- https://ift.tt/0hD7gzt... https://ift.tt/f5CPyLb May 12, 2023 at 09:40PM

Show HN: The Leica MPi: A Leica M2 with a Raspberry Pi-Powered Digital Sensor https://ift.tt/9H4mT3j

Show HN: The Leica MPi: A Leica M2 with a Raspberry Pi-Powered Digital Sensor PetaPixel article: https://ift.tt/itJ4TqM... https://ift.tt/J1Q96mt May 12, 2023 at 04:55PM

Show HN: Plan international rendezvous with different passport holders https://ift.tt/z1GNyeo

Show HN: Plan international rendezvous with different passport holders https://unli.xyz/city/honeymoon/ May 12, 2023 at 07:46AM

Show HN: Google's photorealistic 3D tiles for GPS activity visualization https://ift.tt/6Ze3Twa

Show HN: Google's photorealistic 3D tiles for GPS activity visualization I made a Proof of Concept integration of Google's new 3D tile model (which got announced today at Google's I/O) for my hiking/skiing/running app. It's basically Google Earth plus your GPS track, all the heavy lifting done by Cesium.js. I'm wondering how much this is gonna cost once it's out of experimental phase. https://ift.tt/MSjliE4 May 12, 2023 at 03:44AM

Show HN: A Tool for DJs to Talk to Spotify's Recommendations API https://ift.tt/gJikWlh

Show HN: A Tool for DJs to Talk to Spotify's Recommendations API https://ift.tt/FPsvIHm May 12, 2023 at 12:59AM

Show HN: Browsing in Public https://ift.tt/1Sq0rLv

Show HN: Browsing in Public https://inpubliq.com May 12, 2023 at 12:55AM

Show HN: Browse, upvote and comment on HN from command line https://ift.tt/YDNr21b

Show HN: Browse, upvote and comment on HN from command line Hi HN! I've built hnterminal, a pip package that lets you browse, upvote, and comment on Hacker News from your terminal. To get started: $ pip install hnterminal $ hnterminal hnterminal is an interactive REPL environment with commands like "get_front_page", "get_tree", "upvote", "reply_to", etc, each of which supports rich arguments and comes with full help documentation. Checkout the readme. https://ift.tt/0srbB6H May 11, 2023 at 09:57PM

Show HN: Interactive story map built using Google 3D Tiles and deck.gl https://ift.tt/iKYIz6E

Show HN: Interactive story map built using Google 3D Tiles and deck.gl https://ift.tt/yXUuPO9 May 11, 2023 at 12:22PM

Show HN: MedGPT – Get information about medicines, treatments, and diagnoses https://ift.tt/5jePUQV

Show HN: MedGPT – Get information about medicines, treatments, and diagnoses https://ift.tt/8OhE0Hk May 11, 2023 at 05:21PM

Show HN: BundleStore – increase revenue by offering your product in a bundle https://ift.tt/csvB1hQ

Show HN: BundleStore – increase revenue by offering your product in a bundle On BundleStore, users buy more to save more. By offering your product in a bundle, you can make your product instantly more attractive! Visit the website and tell me what your product is, and I'll do the rest. https://ift.tt/ZxIcgTV May 11, 2023 at 02:28PM

Show HN: Search Xkcd https://ift.tt/difhc6P

Show HN: Search Xkcd https://xkcd.netcore.io May 11, 2023 at 01:33PM

Show HN: Deterministic objective Bayesian inference for spatial models [pdf] https://ift.tt/OY9HwbN

Show HN: Deterministic objective Bayesian inference for spatial models [pdf] To give some context, objective Bayesian inference refers to Bayesian analysis (i.e. integrating over the parameter space) using a prior that is design to represent "minimal information" (see [1], [2], and [3] for an overview). Particularly in cases where a model's likelihood function is not strongly peaked about a point, objective Bayesian inference can give better results than methods based off of point estimates like Maximum Likelihood [4]. Reference priors provides a general approach to construct so-called noninformative priors that are suitable for Objective Bayesian analysis ([5], [6]). The approach takes a practical viewpoint of noninformative priors and looks to build priors that are both tractable and provide good performance on frequentist coverage simulations. See Section 2 for a description of how the process and frequentist simulations work and [7] for examples with some basic models (e.g. why 1/σ^2 is the noninformative prior for the variance of normally distributed data with known mean). [8] was the first to develop reference priors for Gaussian processes models, and [9] extended the work to handle Gaussian Processes with noise (or nugget effects). The project I'm working on provides software and algorithms to do deterministic inference using the prior from [9]. Typically, such inference has been done using MCMC sampling algorithms; but my belief is that deterministic algorithms can give results that are more consistent, less sensitive to parameter tweaking, and more efficient, at the expense of some engineering cost and loss of generality. For an example of how the algorithms work on a real-world data set of zinc measurements in a flood plain along the Meuse river [10], see https://ift.tt/Oc4NW8C... References [1]: https://ift.tt/Rz5OZBm [2]: https://ift.tt/xjrcb4P... [3]: https://ift.tt/BVkDEMv [4]: https://ift.tt/14Zy9ps... [5]: https://ift.tt/9xm5pnS... [6]: https://ift.tt/sxaVXAY [7]: https://ift.tt/NdM5DOt... [8]: https://ift.tt/waErfnj... [9]: https://ift.tt/dmgMpCc... [10]: https://ift.tt/iJLQI18... https://ift.tt/eiEl41n May 10, 2023 at 08:37PM

Show HN: Mineo.app – Better Python Notebooks https://ift.tt/F9OBLgH

Show HN: Mineo.app – Better Python Notebooks Hello everyone, I would like to introduce our startup to HN: Mineo.app. Mineo.app is a production-ready SaaS Python notebook that provides a complete environment for building your data applications: Dashboards, Reports, and Data Pipelines based on Python notebooks. Key features: * Superpowered jupyter-compatible Python notebooks with extra goodies like: version control, commenting support, custom docker images, etc... enhanced with no code components that allow to create beautiful dashboards and reports. * Data Pipelines: Ability to schedule and run one or more notebooks. * Integrated file system to manage your files and projects with detailed permissions and groups. We have a freemium licensing model, so you can start using Mineo just by registering with your Github/Google/Microsoft account for free without a credit card. And it's free for educational purposes ;-) Diego. https://www.mineo.app/ May 9, 2023 at 06:49PM

Show HN: Millions Dollar AI Homepage https://ift.tt/jxLU7Yy

Show HN: Millions Dollar AI Homepage https://ift.tt/zoSBcsl May 10, 2023 at 06:15PM

Show HN: Awesome OpenAI Whisper List https://ift.tt/RU0L1f7

Show HN: Awesome OpenAI Whisper List https://ift.tt/Ve4nxRJ May 10, 2023 at 04:44PM

Show HN: A clock app developed based on flutter https://ift.tt/S2BWcMx

Show HN: A clock app developed based on flutter https://ift.tt/kgFbaHw May 10, 2023 at 09:30AM

Show HN: Build progressively enhanced reactive HTML apps using Go and Alpine.js https://ift.tt/Bf7ZrGk

Show HN: Build progressively enhanced reactive HTML apps using Go and Alpine.js Fir leverages Golang’s standard library html/template package and a bit of alpinejs to allow building reactive UIs. You start with plain old html and use alpinejs to enhance it to bring no-page-reload interactivity to web apps. The Fir toolkit is designed for Go developers with moderate html/css & js skills who want to progressively build reactive web apps without mastering complex web frameworks. It includes a Go library and an Alpine.js plugin. How it works ? On receiving user-interactions the fir server re-renders html templates and sends it over the wire where the fir client library selectively updates the changed areas. When a user event is received by a Fir route, an array of html templates are rendered on the server and returned as an array of DOM events to the browser. The DOM events are consumed by the alpinejs plugin and dispatched within the DOM where listeners attached to elements can use the event to update the DOM. See the demo and quickstart here: https://ift.tt/3ik67sX https://ift.tt/3ik67sX May 10, 2023 at 05:33AM

Show HN: Card game where players write their own cards that get parsed into code https://ift.tt/y1RtOUd

Show HN: Card game where players write their own cards that get parsed into code Wordbots is a long-running side project I've been working on on-and-off for the past ~7 years that I finally feel comfortable enough with to share with the HN community. It's an online tactical card game (inspired by games like Hearthstone and Magic: the Gathering), where players write their own cards in natural language, that gets parsed down to JavaScript. The English-to-JavaScript translation is handled by a semantic parser operating on a hand-crafted CCG grammar – kind of an “old-school” approach in this age of LLMs but one that performs quite well on the very constrained language of Wordbots cards. The resulting game gets pretty wacky as players can create all sorts of cards, though there are some game formats that try to produce more balanced gameplay as well (e.g. one format in which both players shuffle their decks together, and various draft formats). If you're curious about how it all works, I made a write-up about it here: https://ift.tt/pnCYHbk And if you want to chat about Wordbots beyond this thread, please don't hesitate to join our discord at https://ift.tt/5ak4Kls . I'd love to hear any and all feedback. -Alex https://ift.tt/LW8ZADo May 10, 2023 at 01:01AM

Show HN: Engineering Book Club https://ift.tt/L60k918

Show HN: Engineering Book Club An online community that enjoys reading and discussing engineering books together. https://ift.tt/pRcUuhI May 9, 2023 at 11:32PM

Show HN: We built an end-to-end encrypted alternative to Notion https://ift.tt/YfBrcoU

Show HN: We built an end-to-end encrypted alternative to Notion Hello HN, Over the last year we've been building snote.app, a Privacy focused, End-to-End Encrypted alternative to Notion. You can write, plan, collaborate and get organized - it allows you to take notes, store files, add tasks, manage projects & more. Whether you're working solo or in a team. We are hoping to use this post as an opportunity to collect feedback from fellow hackers. If there's anything we can do better, please let us know https://www.snote.app/ May 9, 2023 at 07:17PM

Show HN: Metarank – open-source hybrid search with LLMs https://ift.tt/U8R7Fs4

Show HN: Metarank – open-source hybrid search with LLMs A small demo for a Metarank open-source project I'm maintaining. https://ift.tt/qXyaHvo May 9, 2023 at 05:22PM

Show HN: Novika – a free-form, moldable, interpreted programming language https://ift.tt/0FVBqiY

Show HN: Novika – a free-form, moldable, interpreted programming language https://ift.tt/HC2Q9Pc May 9, 2023 at 05:04AM

Show HN: Submit ChatGPT prompts on a web page to mutate the same web page https://ift.tt/rAjiTxW

Show HN: Submit ChatGPT prompts on a web page to mutate the same web page https://ift.tt/CErQ32T May 8, 2023 at 11:19PM

Show HN: A social network to share articles you've read https://ift.tt/UlLRkyC

Show HN: A social network to share articles you've read https://ift.tt/hQWRxO2 May 9, 2023 at 02:52AM

Show HN: Monch, a tasty TypeScript parser-combinators library https://ift.tt/VlxvkdE

Show HN: Monch, a tasty TypeScript parser-combinators library https://ift.tt/qhQM7mo May 9, 2023 at 01:38AM

Show HN: Cptn.io – open-source integration platform https://ift.tt/QKwRqOx

Show HN: Cptn.io – open-source integration platform Hi, I am Krishna Thota. I am building an open source integration and data platform( https://cptn.io ). The product is MIT licensed and the repo is at https://ift.tt/waJXNHq . I have started on my startup journey an year ago and launched a monitoring platform called DevRaven. Unfortunately the product did not takeoff as expected. That story is for another day. But during the course of building the product, I have built several integrations leveraging MQs and Cloud Functions. While building and deploying Cloud Functions for happy paths is easy, I had to monitor logs for failures, build retry mechanisms or manually process failed events, keep instances running to prevent cold start timeouts. It can also get expensive with charges for MQs, server time for running cloud functions etc and costs can be unpredictable. I thought of building a platform where I can build integrations quickly, have the ability to look at incoming/outgoing events, look at logs, retry any failed events etc. And finally, predictable costs for running the infrastructure. cptn.io provides all these capabilities and more. You can build pipelines to integrate with any cloud services, send data from your backend to data warehouses, listen to web hook events etc. The platform can be integrated into any stack by sending events to HTTP end points. Instead of trying to build a business first or launch an open source product under restrictive licenses, the platform will be available under MIT license so any user or customer can use it. There is no ee folder or complex dual licensing and I am also committing to releasing SSO under MIT. The plan is to offer a managed service in the cloud at a later time, accept sponsors for prioritizing features for enterprise customers and charge for enterprise support. It should take less than 5 minutes to get the platform running on your machine. Welcome any feedback, feature requests, PRs and bug reports. https://cptn.io May 8, 2023 at 11:15PM

Show HN: Play SineRider, a math puzzle game built by teenagers at Hack Club https://ift.tt/qD7U1kJ

Show HN: Play SineRider, a math puzzle game built by teenagers at Hack Club Messing with your TI-84 graphing calculator is a rite of passage for every teenager who has ever been bored in a math class. In 2013 I was that teenager, and it gave me an idea for a tiny game about sledding on graphs. This project grew into my white whale, and I spent my twenties trying and failing to finish it alone. I shelved the game when I started working for Hack Club in 2018—until last May, when a few community members took it off the shelf. The project took on a life of its own, and turned into a year of nights and weekends from a global team of 20+ teens in 8+ countries. Today SineRider enters public beta! SineRider is literally an infinite universe of function composition puzzles, each with infinite solutions, that range from welcoming for 9th graders to difficult for even the most serious matlab user. And every day we tweet out a fresh one to be solved with your morning coffee. We hope you enjoy playing SineRider as much as we’ve enjoyed making it. And we’re not done! Mobile support, polar coordinates, and a level editor are all on the roadmap. SineRider is a living project, to be continuously built and maintained as free OSS by the Hack Club community: https://ift.tt/3blAt1O The team that built the game will try to be in the comments today between high school classes and AP tests. —chris walker, creative director Watch the trailer: https://www.youtube.com/watch?v=35nDYoIwiA8 Play now: https://sinerider.com https://ift.tt/3blAt1O May 8, 2023 at 06:44PM

Show HN: A recipe website where all recipes are made by GPT4 https://ift.tt/w32qsUR

Show HN: A recipe website where all recipes are made by GPT4 https://ift.tt/m8XwtHQ May 8, 2023 at 10:46AM

Show HN: Free tool to convert Google Docs to Markdown https://ift.tt/XKmBo5R

Show HN: Free tool to convert Google Docs to Markdown https://ift.tt/w8ibSF3 May 8, 2023 at 02:04AM

Show HN: AI Poetry Contest https://ift.tt/TEbWqwV

Show HN: AI Poetry Contest Hi HN! Me and my buddy made this in a weekend as an experiment in 1. building something quickly and putting it out there and 2. using AI in an interesting way; in this case a poetry judge. Our “judge” isn’t perfect, but the hope is that at least it’s a relatively fair system that everyone can be sure evaluates their work. Anyway, we wanted to see what the lovely people of HN think of it. Some background on the idea; I like poetry and thought it would be cool if there was a big competition with a large financial incentive that scales with the number of participants. Using AI as a judge allows us to handle any number of submissions in a consistent and fair way. It also opens up the competition to poetry written in other languages, although for now we’re only promoting in the US. Happy to answer any questions! Also any feedback is much appreciated, thanks! https://ift.tt/U5SprNV May 8, 2023 at 04:51AM

Show HN: What do you think about my metasearch engine? https://ift.tt/DMhvdT8

Show HN: What do you think about my metasearch engine? https://ift.tt/HJPwFpz May 8, 2023 at 02:14AM

Show HN: Filter crowded places (bars, clubs, museums) per day in major cities https://ift.tt/cqiNySe

Show HN: Filter crowded places (bars, clubs, museums) per day in major cities Free tool to find and filter busy venues based on predicted crowd levels. This way you can find for example busy bars on Wednesday evening, or quiet museums on Sunday morning. It works in most big cities around the world. It makes it easy to find crowded places (or avoid them) when you are unfamiliar with the area. You can filter on days of the week, how busy a place is (quiet, normal, busy), and sort venues based on overall popularity, rating, dwell time, and price. https://ift.tt/iflBZo2 May 8, 2023 at 12:14AM

Show HN: PostData – The No-Fuss Way to Store and Visualize Your IoT Data https://ift.tt/Su7D3Pz

Show HN: PostData – The No-Fuss Way to Store and Visualize Your IoT Data Hey everyone, I'm excited to announce the launch of PostData, a new service that simplifies IoT data storage and visualization. As developers, we know how frustrating it can be to set up complicated services like AWS just to store and view our data. That's why we created PostData – to offer a straightforward solution that gets the job done without all the hassle. With PostData, you can easily ingest, store, and visualize your IoT data in just a few clicks. We offer a forever-free plan that allows you to create new public devices with up to 20 metrics and a limit of 1000 messages per device. We also have two paid plans for private devices and higher limits for those who need them. We're looking for beta users to try out our service and provide feedback. So if you're tired of struggling with complicated IoT data storage and visualization tools, give PostData a try and let us know what you think! Thanks for your time, and I look forward to hearing from you. https://postdata.cloud/ May 7, 2023 at 02:39PM

Show HN: ChatGPT powered AI chatbot for your website https://ift.tt/uiXHgz1

Show HN: ChatGPT powered AI chatbot for your website Introducing Chabotix.com - the no-code chatbot builder powered by ChatGPT! With Chabotix.com, you can easily create a custom chatbot for your website without any coding skills. Simply upload your document and get a link to your chatbot. Your users can then interact with the chatbot, ask questions, and get answers - all without leaving your website! Whether you're a small business owner, a blogger, or a website owner, Chabotix.com is the perfect solution for enhancing your online presence and engaging your audience. Say goodbye to expensive developers and complicated code - with Chabotix.com, you can create a chatbot in minutes and start reaping the benefits of enhanced user engagement and improved customer support. Visit Chabotix.com today and start building your own chatbot! You upload a text file like this one in Chabotix website. Then you receive a personalized link to your AI chat bot. To get your own chabotix, follow simple steps: 1- Sign in to Chabotix.com, 2- Upload your document 3-You get a link to your personalized AI chatbot. Add it to your website. To add chabotix to your website, follow simple steps: 1-Add that Javascript link to your website, before closing html tag. Check this page to see an example. 2- Also use our CSS file to style it. You can also style your Chabotix bot according to your taste by using your own CSS file. Any time if you have any questions, either ask Chabotix directly here or send me a message on Twitter. https://ift.tt/hUOZlQT May 7, 2023 at 02:04PM

Show HN: Hyrable - An AI powered job description writer for recruiters https://ift.tt/dpCmeou

Show HN: Hyrable - An AI powered job description writer for recruiters Write Better Job Descriptions Faster with Hyrable https://ift.tt/cSY9ArE May 7, 2023 at 01:43PM

Show HN: Git Hooting https://ift.tt/K3asRoH

Show HN: Git Hooting 00's called, they want their RSS feeds back. I was looking at my growing Github gist collection when a sudden urge to blog and make a name for myself "by not programming" struck. Part way into implementing my oh so special static website generator it occurred to me that, quite frankly, Github gists is a pretty decent publishing platform. I mean, it gives you reasonably extended markdown with previews, heck I could even write in org-mode, has comments, follower - followee relationship, extended search with filters, check out locally and push your edits. Did someone say "edit button"? Thus the idea behind https://git.ht was born: collect gists into RSS feeds and force everyone, kicking and screaming, into the good old days when Google Reader was king. Well, it's a bit more than that now. But basically, you create a gist or grab an old one, name its main file `hoot.md` or `hoot.org` if org-mode is your poison, make it public and voila. These "hoots" make it into your RSS feed and will get permalinks with social graph metatags, so you get nice previews when you share them on Twitter and such. To take it for a spin: - pick a subdomain e.g. foo.git.ht, - navigate you browser there, - login with Github. I still consider it alpha, but it should work. Report any issues as you would normally on Github https://ift.tt/w20vTes . Thank you https://git.ht May 7, 2023 at 05:59AM

Show HN: Mini-spend-tracker – a self-hosted server for tracking your spendings https://ift.tt/ojQZbiE

Show HN: Mini-spend-tracker – a self-hosted server for tracking your spendings https://ift.tt/JfcxdaK May 7, 2023 at 02:52AM

Show HN: MoodFood – AI Chef Assistant for Personalized Meals and Mood Dining https://ift.tt/S2o7a4r

Show HN: MoodFood – AI Chef Assistant for Personalized Meals and Mood Dining https://ift.tt/AnMQiKZ May 7, 2023 at 02:11AM

Show HN: CrossLine – the desktop Outliner with cross-links and transclusion https://ift.tt/3rzwXWC

Show HN: CrossLine – the desktop Outliner with cross-links and transclusion https://ift.tt/IbVHLDJ May 6, 2023 at 08:16PM

Show HN: SpiderSuite: Advance GUI web security crawler https://ift.tt/AjZrLwP

Show HN: SpiderSuite: Advance GUI web security crawler https://ift.tt/CVzqLho May 6, 2023 at 11:26AM

Show HN: Ethereum address reviews, similar to Yelp https://ift.tt/bHcP20z

Show HN: Ethereum address reviews, similar to Yelp Hi HN, Excuse me if the formatting sucks, this is a first time post. I want to introduce to you vrfd.info. A place where you can openly view and influence the reputation of any Ethereum address. Think of it as Yelp but for Eth. Addresses are classified as either verified or flagged on-chain through soulbound NFTs. A type of NFT that has no trade value as it cannot be sold. Once minted, it is stuck to the given address. The metadata of the NFT contains either information to verify the address with, this could be a social account for example. Or in the case of flagged addresses, the metadata contains proof of wrong-doing. Users can search the classification status of any address on the web app. Additionally, users can apply to either verify or report an address, provided proof. In the case of reports, users stand a chance to be rewarded. Finally, users can up or down vote other addresses. I made this tool after suffering one to many scam without having an open source library where addresses can be reported or their credentials verified. It's still a bit clunky, but the core concept works fully integrated on the Testnet. I'm shipping a big update this week to make it more responsive. Thanks for taking the time to read this. Please give me any feedback as I am looking to improve everywhere I can. https://vrfd.info May 5, 2023 at 11:00PM

Show HN: Telegram Bot for Surf Conditions https://ift.tt/hB8q65x

Show HN: Telegram Bot for Surf Conditions I got tired of checking different weather apps every time my surf group wanted to go out. This bot shares the current conditions whenever you message /conditions to the group! https://ift.tt/9p4MXrw May 6, 2023 at 02:31AM

Show HN: Avoiding Imgur Link Rot https://ift.tt/dBFyhqT

Show HN: Avoiding Imgur Link Rot Over the last decade I've built a number of different digital asset managers (mostly media files) that met the needs of my companies at the time. It is an area I enjoy working in. A month ago, when asked what was next for me, I jokingly said I would build another DAM. Then on Saturday, two weeks ago, I learnt that Imgur was going to delete all anonymous & NSFW files on the 15th of May. It was pointed out that this would mean broken links in communities that had relied on Imgur. By the Sunday I had decided that I would build another DAM, initially with the intent of avoiding Imgur link rot. It was challenging to find time to spend on this, the project was put together over about 8 evenings. It still has rough patches, this is an early MVP (a Michael Seibel "brick"). I have many ideas of where to take this project, but for now it only does one thing: backup Imgur files and produce new links that are easy to swap out for old soon-to-be-deleted Imgur links. https://haasie.com May 6, 2023 at 04:10AM

Show HN: Pure browser side natural language processing https://ift.tt/D7GJdcN

Show HN: Pure browser side natural language processing https://winkjs.org/ May 5, 2023 at 09:45PM

Show HN: PromptFlow – Low-Code GUI Tool to Chain LLM Prompts with Flowcharts https://ift.tt/os9pA8r

Show HN: PromptFlow – Low-Code GUI Tool to Chain LLM Prompts with Flowcharts https://ift.tt/lcogtLD May 6, 2023 at 12:04AM

Show HN: Hypertune – Visual, functional, statically-typed configuration language https://ift.tt/rT1uvqn

Show HN: Hypertune – Visual, functional, statically-typed configuration language Hey HN! I'm Miraan, the founder at Hypertune, and I'm excited to be posting this on HN. Hypertune lets you make your code configurable to let teammates like PMs and marketers quickly change feature flags, in-app copy, pricing plans, etc. It's like a CMS but instead of only letting you set static content, you can insert arbitrary logic from the UI, including A/B tests and ML "loops". I previously built a landing page optimization tool that let marketers define variants of their headline, CTA, cover image, etc, then used a genetic algorithm to find the best combination of them. They used my Chrome extension to define changes on DOM elements based on their unique CSS selector. But this broke when the underlying page changed and didn't work with sites that used CSS modules. Developers hated it. I took a step back. The problem I was trying to solve was making the page configurable by marketers in a way that developers liked. I decided to solve it from first principles and this led to Hypertune. Here's how it works. You define a strongly typed configuration schema in GraphQL, e.g. type Query { page(language: Language!, deviceType: DeviceType!): Page! } type Page { headline: String! imageUrl: String! showPromotion: Boolean! benefits: [String!]! } enum Language { English, French, Spanish } enum DeviceType { Desktop, Mobile, Tablet } Then marketers can configure these fields from the UI using our visual, functional, statically-typed language. The language UI is type-directed so we only show expression options that satisfy the required type of the hole in the logic tree. So for the "headline" field, you can insert a String expression or an If / Else expression that returns a String. If you insert the latter, more holes appear. This means marketers don't need to know any syntax and can't get into invalid states. They can use arguments you define in the schema like "language" and "deviceType", and drop A/B tests and contextual multi-armed bandits anywhere in their logic. We overlay live counts on the logic tree UI so they can see how often different branches are called. You get the config via our SDK which fetches your logic tree once on initialization (from our CDN) then evaluates it locally so you can get flags or content with different arguments (e.g. for different users) immediately with no network latency. So you can use the SDK on your backend without adding extra latency to every request, or on the frontend without blocking renders. The SDK includes a command line tool that auto-generates code for end-to-end type-safety based on your schema. You can also query your config via the GraphQL API. If you use the SDK, you can also embed a build-time snapshot of your logic tree in your app bundle. The SDK initializes from this instantly then fetches the latest logic from the server. So it'll still work in the unlikely event the CDN is down. And on the frontend, you can evaluate flags, content, A/B tests, personalization logic, etc, instantly on page load without any network latency, which makes it compatible with static Jamstack sites. I started building this for landing pages but realized it could be used for configuring feature flags, in-app content, translations, onboarding flows, permissions, rules, limits, magic numbers, pricing plans, backend services, cron jobs, etc, as it's all just "code configuration". This configuration is usually hardcoded, sprawled across json or yaml files, or in separate platforms for feature flags, content management, A/B testing, pricing plans, etc. So if a PM wants to A/B test new onboarding content, they need a developer to write glue code that stitches their A/B testing tool with their CMS for that specific test, then wait for a code deployment. And at that point, it may not be worth the effort. The general problem with having separate platforms is that all this configuration naturally overlaps. Feature flags and content management overlap with A/B testing and analytics. Pricing plans overlap with feature flags. Keeping them separate leads to inflexibility and duplication and requires hacky glue code, which defeats the purpose of configuration. I think the solution is a flexible, type-safe code configuration platform with a strongly typed schema, type-safe SDKs and APIs, and a visual, functional, statically-typed language with analytics, A/B testing and ML built in. I think this solves the problem with having separate platforms, but also results in a better solution for individual use cases and makes new use cases possible. For example, compared specifically to other feature flag platforms, you get auto-generated type-safe code to catch flag typos and errors at compile-time (instead of run-time), code completion and "find all references" in your IDE (no figuring out if a flag is in kebab-case or camelCase), type-safe enum flags you can exhaustively switch on, type-safe object and list flags, and a type-safe logic UI. You pass context arguments like userId, email, etc, in a type-safe way too with compiler errors if you miss or misspell one. To clean up a flag, you remove it from your query, re-run code generation and fix all the type errors to remove all references. The full programming language under the hood means there are no limits on your flag logic (you're not locked into basic disjunctive normal form). You can embed a build-time snapshot of your flag logic in your app bundle for guaranteed, instant initialization with no network latency (and keep this up to date with a commit webhook). And all your flags are versioned together in a single Git history for instant rollbacks to known good states (no figuring out what combination of flag changes caused an incident). There are other flexible configuration languages like Dhall (discussed here: https://ift.tt/VaxFgmn ), Jsonnet (discussed here: https://ift.tt/ZVcvKlX ) and Cue (discussed here: https://ift.tt/2MYzgSd ). But they lack a UI for nontechnical users, can't be updated at run-time and don't support analytics, A/B testing and ML. I was actually going to start with a basic language that had primitives (Boolean, Int, String), a Comparison expression and an If / Else. Then users could implement the logic for each field in the schema separately. But then I realized they might want to share logic for a group of fields at the object level, e.g. instead of repeating "if (deviceType == Mobile) { primitiveA } else { primitiveB }" for each primitive field separately, they could have the logic once at the Page level: "if (deviceType == Mobile) { pageObjectA } else { pageObjectB }". I also needed to represent field arguments like "deviceType" in the language. And I realized users may want to define other variables to reuse bits of logic, like a specific "benefit" which appears in different variations of the "benefits" list. So at this point, it made sense to build a full, functional language with Object expressions (that have a type defined in the schema) and Function, Variable and Application expressions (to implement the lambda calculus). Then all the configuration can be represented as a single Object with the root Query type from the schema, e.g. Query { page: f({ deviceType }) => switch (true) { case (deviceType == DeviceType.Mobile) => Page { headline: f({}) => "Headline A" imageUrl: f({}) => "Image A" showPromotion: f({}) => true benefits: f({}) => ["Ben", "efits", "A"] } default => Page { headline: f({}) => "Headline B" imageUrl: f({}) => "Image B" showPromotion: f({}) => false benefits: f({}) => ["Ben", "efits", "B"] } } } So each schema field is implemented by a Function that takes a single Object parameter (a dictionary of field argument name => value). I needed to evaluate this logic tree given a GraphQL query that looks like: query { page(deviceType: Mobile) { headline showPromotion } } So I built an interpreter that recursively selects the queried parts of the logic tree, evaluating the Functions for each query field with the given arguments. It ignores fields that aren't in the query so the logic tree can grow large without affecting query performance. The interpreter is used by the SDK, to evaluate logic locally, and on our CDN edge server that hosts the GraphQL API. The response for the example above would be: { "__typename": "Query", "page": { "__typename": "Page", "headline": "Headline A", "showPromotion": true } } Developers were concerned about using the SDK on the frontend as it could leak sensitive configuration logic, like lists of user IDs, to the browser. To solve this, I modified the interpreter to support "partial evaluation". This is where it takes a GraphQL query that only provides some of the required field arguments and then partially evaluates the logic tree as much as possible. Any logic which can't be evaluated is left intact. The SDK can leverage this at initialization time by passing already known arguments (e.g. the user ID) in its initialization query so that sensitive logic (like lists of user IDs) are evaluated (and eliminated) on the server. The rest of the logic is evaluated locally by the SDK when client code calls its methods with the remaining arguments. This also minimizes the payload size sent to the client and means less logic needs to be evaluated locally, which improves both page load and render performance. The interpreter also keeps a count of expression evaluations as well as events for A/B tests and ML loops, which are flushed back to Hypertune in the background to overlay live analytics on the logic tree UI. It's been a challenge to build a simple UI given there's a full functional language under the hood. For example, I needed to build a way for users to convert any expression into a variable in one click. Under the hood, to make expression X a variable, we wrap the parent of X in a Function that takes a single parameter, then wrap that Function in an Application that passes X as an argument. Then we replace X in the Function body with a reference to the parameter. So we go from: if (X) { Y } else { Z } to ((paramX) => if (paramX) { Y } else { Z } )(X) So a variable is just an Application argument that can be referenced in the called Function's body. And once we have a variable, we can reference it in more than one place in the Function body. To undo this, users can "drop" a variable in one click which replaces all its references with a copy of its value. Converting X into a variable gets more tricky if the parent of X is a Function itself which defines parameters referenced inside of X. In this case, when we make X a variable, we lift it outside of this Function. But then it doesn't have access to the Function's parameters anymore. So we automatically convert X into a Function itself which takes the parameters it needs. Then we call this new Function where we originally had X, passing in the original parameters. There are more interesting details about how we lift variables to higher scopes in one click but that's for another post. Thanks for reading this far! I'm glad I got to share Hypertune with you. I'm curious about what use case appeals to you the most. Is it type-safe feature flags, in-app content management, A/B testing static Jamstack sites, managing permissions, pricing plans or something else? Please let me know any thoughts or questions! https://ift.tt/qgJX6G9 May 4, 2023 at 08:31PM

Show HN: Low-level portfolio showcase projects beyond traditional CVs https://ift.tt/HboA9Ru

Show HN: Low-level portfolio showcase projects beyond traditional CVs You are more than just your CV! I always feel that CVs are abbreviated and ATS-friendly but not human-friendly. I want to write about what inspired me beyond all my work. about my unique story and experiences that set me apart from the competition. it's important to make your resume ATS-friendly, don't forget to showcase the real you. Portfolio: https://ift.tt/ckzDWJU... I appreciate any feedback or suggestions. https://ift.tt/vwQeZa3 May 5, 2023 at 07:13AM

Show HN: Structured and typehinted GPT responses in Python https://ift.tt/encC2Ox

Show HN: Structured and typehinted GPT responses in Python https://ift.tt/dRCkeiI May 5, 2023 at 02:09AM

Show HN: Narr – Download Netflix audio for sampling https://ift.tt/eOClSIJ

Show HN: Narr – Download Netflix audio for sampling https://ift.tt/vsfZazx May 5, 2023 at 12:27AM

Show HN: Deploy to X” buttons for any GitHub repository https://ift.tt/UoxEa3O

Show HN: Deploy to X” buttons for any GitHub repository https://deploy-to.com/ May 4, 2023 at 10:50PM

Show HN: Skyname – the first Bluesky username registrar https://ift.tt/ZWze0M5

Show HN: Skyname – the first Bluesky username registrar Hey HN! Skyname is the world's first Bluesky username registrar. Pick a fun domain from bsky.cool to tired.io and register your username in seconds. It'll automatically create the TXT record used for verification, assign it to your account, and update your handle on Bluesky. Interested to hear what y'all think :~) https://skyna.me May 4, 2023 at 10:20PM

Show HN: GPT Prompt IDE https://ift.tt/eRbuJVl

Show HN: GPT Prompt IDE Hi HN, Today we're launching a tool to help you evaluate and test prompts for Generative AI. We have been building different GPT3 apps and noticed a gap in tooling to help developers assess the quality of different prompts. Our tool helps you template and test on different datasets and LLM models like GPT-3, GPT-3.5 and open source models like flan-t5-xxl. We are just getting started and would be delighted to receive your feedback. https://trywale.com/ May 4, 2023 at 12:38AM

Show HN: Real-time news summary and mind maps https://ift.tt/MDUvyH8

Show HN: Real-time news summary and mind maps https://ift.tt/NhGKSx7 May 3, 2023 at 09:29PM

Show HN: USearch – Smaller and Faster Single-File Vector Search Engine https://ift.tt/bumBJa7

Show HN: USearch – Smaller and Faster Single-File Vector Search Engine Last week was insane for vector search. Weaviate raised $50M, and Pinecone raised $100M... That's a lot and makes you believe that vector search is hard. But it's not. I have spent the last couple of days implementing a single-file vector search engine from scratch, which is at least the tenth in the twenty years of my career. But this time, it's different. Instead of inventing a brand new algorithm and doing some crazy optimizations on the GPU, I: 1. took the standard HNSW algorithm, 2. fitted into 1000 lines of C++11 for portability, 3. added quantization and hardware-accelerated metrics, 4. wrapped for Python, JavaScript, Rust, and Java, and 5. open-sourced it! It was fun, and to my surprise, it performed well, reaching 300K QPS on Amazon c7g instances. I never had to use third-party vector search products, but the first testers of USearch suggested 3x performance improvement over their existing solutions. My colleagues and friends are also adding bindings for GoLang and the Wolfram language. We will soon add Windows support, a standalone server, and a distributed version based on UCall we shared a month ago. There are, of course, but you can already use it! One of the apparent use cases is Semantic Search platforms. The example at the end of the GitHub page shows how to use USearch, UCall, and the UForm transformers together to build up a text-to-image semantic search platform in just 20 lines of Python. Try it and join the development! We also have a lot of open positions, especially for those who want to work with us on next-get algorithms and AI infra rather than polishing and repackaging existing ideas :) https://ift.tt/RsNOqt7 May 3, 2023 at 09:03PM

Show HN: Designesy – Subscription-based design service for digital products https://ift.tt/QPi5sTf

Show HN: Designesy – Subscription-based design service for digital products https://designesy.com May 3, 2023 at 12:46PM

Show HN: Logss – BETA Release. A simple Rust tool to helps visualize logs https://ift.tt/Eokem6J

Show HN: Logss – BETA Release. A simple Rust tool to helps visualize logs I've already show this in the past, but this time is a beta release with many new features. https://ift.tt/XUrBEjv May 3, 2023 at 05:10PM

Show HN: Niui 3.0 – lightweight, rich, accessible front end https://ift.tt/ENqPzkC

Show HN: Niui 3.0 – lightweight, rich, accessible front end Here is a library of the most common components I've created in the last decade. It aims to solve the toughest UI problems like Carousel, Modal and Select, while using native browser capabilities as much as possible, and focusing on accessibility, stability and customisation. 14 KB of CSS, JS optional. https://ift.tt/D3yUeFJ https://niui.dev May 3, 2023 at 05:28PM

Show HN: Praxis, an iOS browser that blocks all JavaScript and cookies https://ift.tt/R0WruTe

Show HN: Praxis, an iOS browser that blocks all JavaScript and cookies https://ift.tt/XxbtNG3 May 3, 2023 at 05:20PM

Show HN: Public data research using ChatGPT https://ift.tt/ZRL2BsO

Show HN: Public data research using ChatGPT After trying some queries, I found ChatGPT is good at finding public data, sometimes it may not be accurate, but overall, pretty good. Then why don't we make the data in a beautiful way ready to share? Columns + ChatGPT (alpha) is for data researchers! Looking forward to any feedback or suggestion... https://ift.tt/MCeQ5fg May 3, 2023 at 11:18AM

Show HN: Diofanti.org Tracking government decisions in Greece https://ift.tt/OCbJ3Sz

Show HN: Diofanti.org Tracking government decisions in Greece Hello HN, I'm Florents, and I'm a data engineer based in Greece. I've developed Diofanti.org , an application that tracks public spending and government procurement & decisions in Greece. Here's the big picture: There's diavgeia.gov.gr (diavgeia kinda translates to "transparency") where all Greek state organizations (think ministries, authorities, municipalities, regions) should publish their executive decisions. There are roughly 20K decisions published daily (Greece has a population of 11M). If a decision is not openly published, it cannot be executed legally. So it is a legal prerequisite. A decision could be a payment from a municipality or ministry to a vendor, a procurement of software licenses, or even a parking permit to a disabled citizen. Now, decisions are typically published as PDF documents (with all the legal jargon and details), which makes the law happy but doesn't say much to the average citizen; There's also an API, though, and diofanti taps on that to fetch and analyze those decisions and make them easy to visualize and analyze. So the use cases diofanti supports are like the following: • How much did my hometown pay during the last week? Which vendors are the most frequent receivers? • What are the decisions that my local town makes and that I should know about? • For non-financial decisions, one could go back in time and assess a state's stance on a particular issue. For example, a few years back, diofanti was used to uncover anti-abortion campaigns financed by some state organizations. As you might expect, it's become very popular among journalists and political (opposition) parties. The reason I'm publishing this on HN is to ask the following: 1. Do you have any pointers to similar efforts in other countries? 2. Any ideas to make this better ? 3. Forward this to anyone / any organization that you think would like to support financially Additional material * Blog post describing the thinking behind this [0] (in Greek, but can be translated easily): * Demo video [1] 0: https://ift.tt/p7nil49 1: https://youtu.be/vdpHyxQqyWQ https://diofanti.org May 2, 2023 at 06:48PM

Show HN: Currl – A free text-based social bookmarking website https://ift.tt/yn835Wu

Show HN: Currl – A free text-based social bookmarking website https://currl.io/ May 2, 2023 at 05:39PM

Show HN: The quickest way to get started with AgentGPT running locally https://ift.tt/W8AZ45l

Show HN: The quickest way to get started with AgentGPT running locally https://ift.tt/oXRK0a8 May 2, 2023 at 02:31PM

Show HN: I made a word puzzle using word relatedness vectors https://ift.tt/cDnRUyf

Show HN: I made a word puzzle using word relatedness vectors https://linkywords.com May 2, 2023 at 04:29PM

Show HN: GPT crushes my high score in 2048.io https://ift.tt/vULWd4X

Show HN: GPT crushes my high score in 2048.io https://ift.tt/6YoEypz May 2, 2023 at 02:36PM

Show HN: Hivemind – ChatGPT can now send you reminders and have async convos https://ift.tt/FZuzRn9

Show HN: Hivemind – ChatGPT can now send you reminders and have async convos Prompt -> notifications https://twitter.com/NickADobos/status/1653251763674419203 May 2, 2023 at 11:52AM

Show HN: I've built a spectrogram analyzer web app https://ift.tt/r9HqN2I

Show HN: I've built a spectrogram analyzer web app https://webfft.net/dft/ May 2, 2023 at 06:56AM

Show HN: guitos, a free open-source budgeting app https://ift.tt/d5ZO6IB

Show HN: guitos, a free open-source budgeting app Hi HN, I wanted to share an app I've created recently since it might be useful for you: guitos is a free open-source budgeting app that helps you figure out where your money went and plan your budget ahead of time. It was initially created to replace a spreadsheet I created based on the budgeting advice given on the r/personalfinance subreddits and as an opportunity to learn React. The app stores data in your browser's local storage (IndexedDB). Your private financial data doesn't leave your browser. (If you're wondering what the app's name means: "guitos" is portuguese slang for money/cash. ) source code available @ https://ift.tt/M9HQ2CF https://guitos.app/ May 2, 2023 at 01:30AM

Show HN: Hacked a RPG engine into an AI chatbot https://ift.tt/mXNyS76

Show HN: Hacked a RPG engine into an AI chatbot https://ift.tt/4IngoMA May 1, 2023 at 01:17PM

Show HN: Lectureapp.io – Online Markdown-to-anything* editor https://ift.tt/hi5JlA6

Show HN: Lectureapp.io – Online Markdown-to-anything* editor Here's my weekend project that I think you'll find interesting. Markdown was (and still is) my secret weapon to keep myself productive and sane throughout my teaching career, and that's because I created and maintained number of internal tools to convert such text documents to presentation decks, blog articles, and even pop quizzes. I finally found the time to duct tape these tools together and launch as a product that you can take advantage of as well. I am calling it LectureApp.io, and I would describe it as an "online text-to-anything* editor." Please feel free to give it a try and leave a review on ProductHunt. I welcome any feature suggestions as this will be my main driver for future teaching appointments. https://lectureapp.io/ May 1, 2023 at 12:06PM