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Through Thick and Thermocline

https://www.bassfinity.com/blog/through-the-thick-of-it-punching-summer-grass-mats
1•jequals5•6m ago•0 comments

DWCS: Why I Open-Sourced My Game Infrastructure Early

https://medium.com/@www.ahadprogamer/i-built-an-open-source-multiplayer-backend-for-a-vr-game-tha...
1•Ahadprogamer•9m ago•0 comments

Extinction Rebellion pelt Microsoft Dutch data center site with acid balloons

https://www.datacenterdynamics.com/en/news/extinction-rebellion-pelts-microsoft-data-center-site-...
1•giuliomagnifico•10m ago•0 comments

Marvell Brings Radix, Low Latency, and Bandwidth to Bear with Teralynx T100

https://www.nextplatform.com/connect/2026/07/17/marvell-brings-radix-low-latency-and-bandwidth-to...
1•rbanffy•10m ago•0 comments

Wharton and Harvard Business School: LLMs on business decisions and tasks

https://business-ai-benchmark.github.io/
1•patelajay285•12m ago•0 comments

Show HN: RefundHalt, contest App Store and Google Play refunds automatically

https://refundhalt.com
1•kedv•13m ago•0 comments

Major AI models are likely to refuse criticizing restrictive leaders or govts

https://apnews.com/article/artificial-intelligence-chatbots-censorship-bias-free-speech-fed8fdbf9...
1•smurda•16m ago•0 comments

Why is it so hard for the U.S. to win wars?

https://www.npr.org/2026/07/18/g-s1-134037/why-is-it-so-hard-for-the-u-s-to-win-wars
2•rbanffy•17m ago•0 comments

India's first privately-developed rocket reaches orbit on dramatic debut launch

https://arstechnica.com/space/2026/07/indias-first-privately-developed-rocket-reaches-orbit-on-dr...
1•rbanffy•20m ago•0 comments

Show HN: I built a pinball repair tool grounded in the real service manuals

https://joinflipside.com.au/repair/
1•mcpit•22m ago•0 comments

Understanding Go AI Inference: What Is Inference?

https://internals-for-interns.com/posts/go-ai-inference-what-is-inference/
1•valyala•22m ago•0 comments

Commission fines AliExpress €550M for breaching the Digital Services Act

https://digital-strategy.ec.europa.eu/en/news/commission-fines-aliexpress-eu550-million-breaching...
2•robin_reala•27m ago•0 comments

Show HN: Diagraw-draw AWS/GCP/IBM archs with icons, arrows that stay attached

https://diagraw.com/
1•victoragudo•28m ago•0 comments

Alibaba Fined Record €550M by EU for Illegal Sales

https://www.bloomberg.com/news/articles/2026-07-20/alibaba-fined-550-million-for-illegal-sales-in...
3•technewssss•29m ago•1 comments

Ask HN: What would a Python-first web look like?

1•RS-232•29m ago•1 comments

DeepWaiting mindfulness while you wait

https://deepwaiting.xyz
1•Zeekaas•29m ago•0 comments

Coercion and Deception in AI-to-AI Management: An Agentic Benchmark

https://arxiv.org/abs/2607.15434
1•sbulaev•35m ago•0 comments

Lāhainā Noon in HawaiʻI: When and Where to See IT

https://www.lovebigisland.com/hawaii-blog/lahaina-noon-when-and-where/
1•_tk_•35m ago•0 comments

Who's Afraid of Chinese Models?

https://stratechery.com/2026/whos-afraid-of-chinese-models/
2•mfiguiere•36m ago•0 comments

Show HN: Picnic Host – No fuss static website hosting

https://picnic.host/en/index.html
1•jeremysarchet•37m ago•0 comments

AI is more likely than humans to form biases when hiring

https://www.technologyreview.com/2026/07/20/1140655/ai-biases-hiring-humans/
2•joozio•41m ago•0 comments

EU slaps €550M fine on AliExpress over illegal and counterfeit goods

https://www.euronews.com/my-europe/2026/07/20/eu-slaps-550-million-fine-on-aliexpress-over-illega...
2•muxamilian•42m ago•0 comments

Show HN: Hail.so – Open-source phone, SMS and email for agents and humans, v0.15

https://github.com/hail-hq/hail/
1•r13i•46m ago•1 comments

Mid-tier factory EDC knives worth buying?

https://www.paragon-knives.com/
1•bgzlsxaz•47m ago•0 comments

Show HN: Test harness that found +250 bugs in open-source matching engines

https://github.com/flash1-dev/matching-engine-benchmark
1•roycechocolate•48m ago•0 comments

Reporting Web 3D Capabilities on a Budget of $3 a Month

https://ben3d.ca/blog/reporting-web-3d-capabilities-on-a-budget
1•bhouston•48m ago•0 comments

About AgentRQ – Human-in-loop realtime conversational task manager for AI Agents

https://github.com/agentrq/agentrq
1•shahargl•51m ago•0 comments

Minimal Git CI using hooks

https://mccd.space/posts/26-06-29/simple-git-ci
2•olexsmir•51m ago•0 comments

Show HN: A comprehensive, filterable list of AI agent jails

https://pleasedonotescape.com/
5•petesergeant•53m ago•1 comments

Human mathematicians are being outcounterexampled

https://xenaproject.wordpress.com/2026/07/20/human-mathematicians-are-being-outcounterexampled/
3•vitplister•54m 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•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!