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The Jeffrey Epstein Affair – Joscha Bach

https://joscha.substack.com/p/on-the-jeffrey-epstein-affair
1•irthomasthomas•4m ago•0 comments

Show HN: Zero-power photonic language model–code

https://zenodo.org/records/17764289
1•damir00•7m ago•0 comments

How can I get 1000 downloads for my app on play in the first week

1•fffhjiuyjj•8m ago•3 comments

Techniques to move huge stones - Wally Wallington [video]

https://youtu.be/rgkXfSLcJgg
1•smusamashah•8m ago•0 comments

Worktrunk: Git worktree manager, designed for parallel agents, written in Rust

https://github.com/max-sixty/worktrunk
1•maximilianroos•10m ago•0 comments

Health Billing SaaS – Co-Founder/CTO – Hamburg, Germany

1•bentinck•14m ago•0 comments

SAM3D Body with Rerun

https://github.com/rerun-io/sam3d-body-rerun
2•Tycho87•15m ago•1 comments

The Unreliable Narrator Problem in Agentic Development

https://principal-ade.com/blog/The-Unreliable-Narrator-Problem
3•NoeticLabs•19m ago•0 comments

TiXL: Open-Source Motion GFX

https://tixl.app/
1•thunderbong•19m ago•0 comments

Archaeologists Find 2,250-Year-Old Monument Beneath Ancient Roman City

https://scitechdaily.com/archaeologists-uncover-massive-2250-year-old-monument-beneath-ancient-ro...
2•bookofjoe•20m ago•0 comments

Ask HN: Streaming a Bittorent Video from a Webpage?

1•trinsic2•21m ago•1 comments

Books vs. Podcasts?

http://himanshusinghbisht.substack.com/p/books-vs-podcasts
1•gilfoyle_7•21m ago•0 comments

I Designed and Printed a Custom Nose Guard to Help My Dog with DLE

https://snoutcover.com/billie-story
2•OmriHIllel•22m ago•0 comments

Achieving Lasting Remission for HIV

https://knowablemagazine.org/content/article/health-disease/2025/lasting-remission-hiv-with-broad...
1•Bender•22m ago•0 comments

Found a practical solution to get rid of em dashes(–) in AI generated text

https://quicknote.outstep.co
2•MZUHB•23m ago•2 comments

Lightweight Is the Right Weight

https://www.tinyverse.org/
1•metonym•25m ago•0 comments

Tell HN: Beware of the fake uBlock Origin in Chrome Web Store

https://chromewebstore.google.com/detail/ublock-origin/hmnojgngbpmfaeepgokfdcdgfachcilj
3•qilo•27m ago•2 comments

Next-Gen Music Streaming Concept/Demo – Your Harshest Feedback Appreciated

https://www.joshuaescalante.com/#audiophile
1•javascripture•29m ago•0 comments

An Update on the Farphone's Battery

https://far.computer/battery-update/
9•birdculture•33m ago•6 comments

Make Money Not War: Trump's Real Plan for Peace in Ukraine

https://www.wsj.com/world/russia/russia-u-s-peace-business-ties-4db9b290
2•richardatlarge•34m ago•0 comments

RingChime – 65,000 restored phone ringtones from 170 brands

https://lockchime.com/ringchime/
3•gogyjay•35m ago•1 comments

Firesign Theatre: greatest satirists of 20th century techno-romanticism

https://magazine.mindplex.ai/post/firesign-theatre-the-greatest-satirist-of-20th-century-media-cu...
1•MilnerRoute•36m ago•0 comments

In Northern Scotland, the Neolithic Age Never Ended

https://www.newyorker.com/magazine/2025/12/01/in-northern-scotland-the-neolithic-age-never-ended
1•samizdis•38m ago•0 comments

Student Perceptions of AI Coding Assistants in Learning

https://arxiv.org/abs/2507.22900
2•victorbuilds•38m ago•0 comments

Design-a-Protein.com

https://design-a-protein.com
2•tjala•39m ago•0 comments

Ask HN: Is there a HN but more business/startup oriented?

3•vasilzhigilei•44m ago•3 comments

Self-driving cars will transform urban economies

https://www.economist.com/finance-and-economics/2025/11/27/self-driving-cars-will-transform-urban...
3•adidoit•44m ago•0 comments

Show HN: Web Checker – Browser extension for cycling through website lists

https://chromewebstore.google.com/detail/web-checker/cbcnciigmdlengjcbieeolembcagmoba
1•NickeaTea•45m ago•0 comments

Finding Flowers in Chaos

https://pollrobots.com/blog/2025-11-28-finding-flowers/
1•pacaro•46m ago•0 comments

MetaFun: Compile Haskell-like code to C++ template metaprograms

https://gergo.erdi.hu/projects/metafun/
2•Philpax•46m ago•0 comments
Open in hackernews

An Enterprise-Level Retrieval-Augmented Generation System

https://comfyai.app/article/llm-applications/enterprise-level-rag-hands-on-practice-II
6•zljdanceholic•6mo ago

Comments

zljdanceholic•6mo ago
How can we search the wanted key information from 10,000+ pages of PDFs within 2.5 hours? For fact check, how do we implement it so that answers are backed by page-level references, minimizing hallucinations?

RAG-Challenge-2 is a great open-source project by Ilya Rice that ranked 1st at the Enterprise RAG Challenge, which has 4500+ lines of code for implementing a high-performing RAG system. It might seem overwhelming to newcomers who are just beginning to learn this technology. Therefore, to help you get started quickly—and to motivate myself to learn its ins and outs—I’ve created a complete tutorial on this.

We have a complete graph to explain its workflow where multiple tools are used: Docling for parsing PDFs, LangChain for chunking text, faiss for vectorization and similarity searching, and chatgpt for LLMs.

Besides, I also outline the codeflow, demonstrating the running logic involving multiple python files where starters can easily get lost. Different files are colored differently. The purpose of showing this is not letting you memorize all of these file relationships. It works better for you to check the source code yourself and use this as a reference if you find yourself lost in the code.

The original project of Ilya Rice design its RAG system for answering questions of annual reports from companies, so he only designed three types of question response format for that challenge: a name, a number, or a boolean. But to ask questions about technical stuff, we absolutely ask general questions like How does RoPE work? to know about some concepts and the like Therefore, I further modify the system logic to fit this need by customizing an AnswerWithRAGContextExplanationPrompt class and automatically matching the most related chapter and corresponding pages via searching through all faiss databases (only retrieve the top-1) The final performance is demonstrated below (not cherry-picked, only tested once).

- What's the steps to train a nanoGPT from scratch? The answer is:

Training nanoGPT from scratch involves several clearly defined steps. First, set up the environment by installing necessary libraries, using either Anaconda or Google Colab, and then download the dataset (e.g., tinyShakespeare). Next, tokenize the text into numerical representations and split the data into training and validation sets. Define the model architecture including token/positional embeddings, transformer blocks with multi-head self-attention and feed-forward networks, and layer normalization. Configure training hyperparameters and set up an optimizer (such as AdamW). Proceed with a training loop that performs forward passes, computes loss, backpropagates, and updates parameters, while periodically evaluating performance on both training and validation data. Finally, use the trained model to generate new text from a given context.

All code are provided on Colab and the tutorial is referenced here. Hope this helps!