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Ochat – reproducible, diffable LLM workflows in a single Markdown file

1•dakotamurphyucf•46s ago•0 comments

Tell HN: A production-ready "Hello World" is now ~600 files

1•thesssaism•1m ago•0 comments

Uber Putting $100M into EV Charging for Robotaxis

https://cleantechnica.com/2026/02/18/uber-putting-100-million-into-ev-charging-for-robotaxis/
1•smurda•2m ago•0 comments

Ask HN: Play your favorite DOS retro games on mac

1•melvinodsa•5m ago•0 comments

Agent Orchestrators Are Bad

https://12gramsofcarbon.com/p/agent-orchestrators-are-bad
2•theahura•7m ago•1 comments

Show HN: Offerlog – buy or sell anything on your own terms

https://offerlog.io
3•TheBigA•8m ago•0 comments

A hidden prompt can steal your SSH keys

https://grith.ai/blog/your-ai-agent-has-broad-access
4•edf13•8m ago•0 comments

Twilio WhatsApp Is Useless (and the 30 minute guide to saving $5k/month)

https://github.com/flatypus/ihatetwilio
2•hinsonchan•8m ago•1 comments

Trump's Order Aims to Boost Ingredient Used in Roundup

https://www.nytimes.com/2026/02/18/us/politics/trump-boost-weedkiller.html
3•bilsbie•8m ago•1 comments

Chris Lattner on what the Claude C compiler reveals about the future of software

https://www.modular.com/blog/the-claude-c-compiler-what-it-reveals-about-the-future-of-software
3•sparklychipmunk•8m ago•0 comments

Show HN: Free, open-source, and cross-platform alternative to WisprFlow

https://github.com/josiahsrc/voquill
4•josiahsrc•9m ago•0 comments

Graham's Number

https://en.wikipedia.org/wiki/Graham%27s_number
3•JohnLocke4•9m ago•0 comments

The 30-year fight over how many numbers we need to describe reality

https://www.newscientist.com/article/2498236-the-30-year-fight-over-how-many-numbers-we-need-to-d...
2•voxadam•9m ago•0 comments

BrowserClaw – Accessibility snapshot and ref targeting for AI browser agents

https://github.com/idan-rubin/browserclaw
2•MrRubin•10m ago•1 comments

Sam Altman (OpenAI) and Dario Amodei (Anthropic) Refuse to Hold Hands

https://xcancel.com/ANI/status/2024349307835732347
4•doener•10m ago•0 comments

Show HN: Portabase: A self-hosted tool for database backup and restore

https://github.com/Portabase/portabase
4•rambokdev•11m ago•0 comments

Best Practices for Production AI Agents: Observability and Tracing

https://www.arthur.ai/blog/best-practices-for-building-agents-part-1-observability-and-tracing
6•ianmcgraw•12m ago•2 comments

Top worldwide with social-engineering and a cheat that's still undetected

https://www.ud2.rip/blog/vsrg/
4•birdculture•13m ago•0 comments

Debian, Rust, and the Unix Spirit

https://www.tara.sh/posts/2025/2025-11-03_debian_rust_unix/
2•speckx•13m ago•0 comments

The Empire Always Falls

https://www.joanwestenberg.com/the-empire-always-falls/
3•rocketpastsix•14m ago•0 comments

Show HN: Mogamp – Winamp for macOS

https://github.com/bokan/mogamp/releases/tag/v0.1.0
2•bbokan•15m ago•0 comments

Show HN: Localizeflow – I automated localization for 14 Microsoft OSS repos

https://localizeflow.com/
2•skytin1004•15m ago•1 comments

The Developer Identity Crisis – When AI Split Programmers into Two Tribes

https://devmystify.com/blog/the-developer-identity-crisis-when-ai-split-programmers-into-two-tribes
2•tn6o•15m ago•1 comments

Show HN: GhostInk – Hide secret text inside emojis using Unicode tag characters

https://github.com/SurceBeats/GhostInk
2•SurceBeats•16m ago•0 comments

Show HN: Local AI app that remembers what your screenshots were for:)

https://apps.apple.com/us/app/unbury/id6757711196
2•ainthusiast•16m ago•1 comments

America vs. Singapore: You Can't Save Your Way Out of Economic Shocks

https://www.governance.fyi/p/america-vs-singapore-you-cant-save
9•guardianbob•16m ago•0 comments

Seal pup communication is more similar to that of humans than previously thought

https://www.ru.nl/en/research/research-news/seal-pup-communication-is-more-similar-to-that-of-hum...
3•gmays•17m ago•0 comments

Show HN: Banish – A declarative DSL for rule-based state machines in Rust

https://github.com/LoganFlaherty/banish
2•LoganFlaherty•17m ago•0 comments

Show HN: OpenGnothia – Open-source AI therapy companion (BYOK)

https://www.opengnothia.com/tr
2•lepuzfcoder•18m ago•0 comments

Watching LLMs Think

https://www.atomic14.com/2026/02/19/watching-llms-think
3•iamflimflam1•18m 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•9mo ago

Comments

zljdanceholic•9mo 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!