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