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Cops Play Hide and Seek About Using Spy Tech to Avoid Scrutiny and Bad PR

https://www.eff.org/deeplinks/2026/09/cops-play-hide-and-seek-about-using-spy-tech-avoid-scrutiny...
1•hn_acker•1m ago•0 comments

Blizzard Workers Win Historic Union Contract

https://www.gamespot.com/articles/blizzard-workers-win-historic-union-contract-that-could-set-a-n...
2•dbg31415•3m ago•0 comments

Meridian – Field drawings of scientific instruments printed on apparel

https://meridianplate.com/
1•YairSivan•3m ago•0 comments

Intelligence is not Enough (2023) [video]

https://www.youtube.com/watch?v=bQfJi7rjuEk
1•mooreds•3m ago•0 comments

AI researcher Andrew Tulloch leaving Meta

https://www.semafor.com/article/09/09/2026/ai-researcher-andrew-tulloch-is-leaving-meta
2•utiiiD•4m ago•0 comments

OpenAI claims maths breakthrough on a famed 'Millennium Problem'

https://www.nature.com/articles/d41586-026-02842-5
2•Levitating•4m ago•0 comments

ANA B787 tail strike on landing in Houston

https://avherald.com/h?article=538eb6c0&opt=0
1•r2sk5t•5m ago•1 comments

More light at night linked to changes in heart structure and function

https://medicalxpress.com/news/2026-09-night-linked-heart-function.html
1•mdp2021•6m ago•0 comments

Private Cloud Compute: A new frontier for AI privacy in the cloud (2024)

https://security.apple.com/blog/private-cloud-compute/
2•consumer451•6m ago•0 comments

Pixel art bluegill generated by GPT Image 2.5

https://gametorch.app/commons/edits/321
1•gametorch•6m ago•0 comments

Lix – Embeddable version control/repository system

https://lix.dev
1•samuelstros•6m ago•0 comments

GPT-6 Astra – How does the computer use work?

https://kylejeong.com/blog/how-astras-computer-use-works
1•Kylejeong21•7m ago•0 comments

'Biografía de Jorge Luis Borges' Venice Review

https://www.micropsiacine.com/2026/09/biografia-de-jorge-luis-borges-venice-review-mariano-llinas...
1•andresz75•7m ago•0 comments

Only ground effect vehicle (GEV) ever be operationally deployed as a warship

https://en.wikipedia.org/wiki/Lun-class_ekranoplan
1•r2sk5t•11m ago•0 comments

Personal Statement on Joining the OpenAI Board

https://paulfchristiano.substack.com/p/personal-statement-on-joining-the
1•reducesuffering•13m ago•0 comments

I Started Cubacadabra

https://andrewarrow.dev/2026/moon/2/day/18/why-i-started-cubacadabra/
2•cs1996•14m ago•0 comments

Dear moderators stop these bullies from flagging my posts

2•JodiMiller•14m ago•0 comments

Noise pollution may keep bodies on alert, disrupting sleep and heart health

https://medicalxpress.com/news/2026-09-noise-pollution-bodies-disrupting-heart.html
1•mdp2021•16m ago•0 comments

MCP Client Registration: Dinner Party or Nightclub?

https://fusionauth.io/blog/cimd-vs-dcr
1•mooreds•16m ago•0 comments

How Apple Watch's Audio Intelligence features work in privacy paper

https://9to5mac.com/2026/09/09/apple-details-how-apple-watchs-new-audio-intelligence-features-wor...
2•alwillis•17m ago•0 comments

Agents Make Rebase a No-Brainer

https://home.expurple.me/posts/agents-make-rebase-a-no-brainer/
1•Expurple•19m ago•0 comments

Goodbye Sourcehut

https://timharek.no/blog/goodbye-sourcehut/
2•twapi•23m ago•0 comments

OpenAI's apparent maths breakthrough raises profound questions

https://www.economist.com/science-and-technology/2026/09/09/openais-apparent-maths-breakthrough-r...
1•ijidak•23m ago•0 comments

Show HN: Project Management for the Rest of Us

https://actual-plan.com/
2•crmasterton•24m ago•1 comments

Virtualized Conversations (Vcon)

https://datatracker.ietf.org/group/vcon/documents/
2•mindcrime•24m ago•0 comments

Schools Get 5M Complaints yet Almost No Teachers Trained to Handle Them

https://replyresearch.com/schools-get-5m-complaints-yet-almost-no-teachers-trained-to-handle-them/
2•replyresearch•24m ago•0 comments

Show HN: CantonPay – registration-free Stellar payment links

https://cantonpay.online
1•richardbertok•24m ago•0 comments

Data Access Patterns That Makes Your CPU Angry

https://blog.weineng.me/posts/slowest_add
1•fagnerbrack•25m ago•0 comments

There is no 10x RBAC

https://infisical.com/blog/folder-based-rbac
1•FinnLobsien•26m ago•0 comments

Vibe2phone: Test your vibe coded iPhone apps from anywhere on your phone

https://github.com/jystervinou/vibe2phone
1•jystervinou•26m ago•1 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•1y ago

Comments

zljdanceholic•1y 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!