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Articles 167,848Blog Posts 160,036Tech Tutorials 44,533Research Papers 32,781News 21,441
⚡ AI Lessons

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
1w ago
When GraphRAG Is Overkill: A Break-Even Test for Plain RAG, Graphs, and Hybrid Search
A practical break-even test for plain RAG, GraphRAG, and hybrid retrieval based on question shape, indexing cost, freshness, latency, permissions, and quality.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
2w ago
My RAG System Answered a Stock-Price Question It Had No Data For
A financial RAG system answered a live stock-price query from static filings. Two deterministic refusal checks exposed and blocked the failure.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
4w ago
My D&D Campaign Notes Accidentally Matched Google's New RAG Spec
If your data already has structure that only humans read, the gap between "looks like a graph" and "is a graph your retrieval code uses" is worth checking.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
1mo ago
Runbooks + RAG: How I Gave My AI SRE Agent the Context It Was Missing
Learn how retrieval-augmented generation (RAG) helps AI SRE agents use runbooks, postmortems, and documentation to investigate real production incidents.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
1mo ago
Your RAG Isn't Hallucinating. Your Retrieval Is Lying.
When RAG gives a wrong answer, everyone blames the LLM. Usually the model was fine — retrieval handed it garbage. Here's how to catch it before users do.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
1mo ago
Building a Self-Healing RAG Pipeline With LangGraph, LangChain, and LLM-as-Judge
RAG systems can confidently generate answers that contradict their own retrieved context, with no errors anywhere to flag it. This article builds a self-healing

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
2mo ago
How to Build a Production RAG System on AWS From Scratch (Complete Beginner's Guide)
RAG is the most important AI pattern in enterprise right now. This complete beginner's guide walks you through building a production-ready RAG.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
2mo ago
Your RAG System Might Be Confidently Wrong
Most RAG confidence scores only describe the model output. They do not tell you whether the retrieved index was fresh, whether the source changed after indexing

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
2mo ago
A Practical Security Architecture for Retrieval-Augmented Generation
This article argues that the primary security risks in Retrieval-Augmented Generation (RAG) systems often originate in the retrieval layer rather than the langu
Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
2mo ago
The RAG Data-Flow Audit: A Practical Framework for Enterprise AI Teams
A practical framework for auditing enterprise RAG pipelines before legal, security, or compliance teams approve AI agents.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
2mo ago
What Production-Grade RAG Evaluation Should Look Like
This article argues that evaluating agentic RAG systems requires far more than a single faithfulness score. It explores a production-focused evaluation stack bu

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
2mo ago
What Two Years of Research Have Taught Us About Chunking for RAG
This deep dive argues that chunking is one of the most overlooked determinants of RAG performance. Drawing on recent research from Chroma, Anthropic, Jina AI, a

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
3mo ago
Backpressure, Cancellation, and Channels in WorkIt
A naive RAG pipeline pulls 281 docs to deliver 25. Real backpressure pulls 40. How WorkIt paces the producer to consumer demand in Node.js & TypeScript.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
3mo ago
Meet the Writer: Hacker Noon's Contributor Vineet Vijay, Lead AI Engineer
Vineet Vijay found 40 K-mismatched vectors silently breaking his RAG system. Here's what he learned, and what he's writing about next.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
3mo ago
Mean Pooling Was Hiding Prompt Injections in Our RAG Pipeline
RAG detectors fail because mean pooling averages out malicious signals in long documents. While a short attack gets diluted, the encoder’s raw hidden states cap

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
3mo ago
Embedding Staleness Is Probably Corrupting Your RAG System Right Now
This article examines embedding staleness and index drift as overlooked failure modes in production Retrieval-Augmented Generation systems. Using a real-world R

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
3mo ago
The Real Final Boss of Production-Grade RAG Is the PDF
Standard RAG systems often become hallucination engines because naive PDF parsing destroys document structure. We solved this by implementing layout-aware parti

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
3mo ago
Production RAG: The Five Decisions Behind Every System That Works
This article breaks down the five critical decisions required to build effective RAG systems: whether to use retrieval at all, how to chunk and parse data, how

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
4mo ago
YouTube Told Me to Build a RAG System—So I Shipped One With Zero Dependencies
Frustrated by the complexity of existing RAG frameworks, the author built a lightweight, zero-dependency Node.js package that introduces an “agentic” feedback l

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
4mo ago
Docling Studio Earns a 67.76 Proof of Usefulness Score by Building a Visual Debugger for RAG Pipelines
Docling Studio is an open-source visual debugger for RAG pipelines built on IBM's Docling. Instead of treating document extraction as a black box, it lets you s

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
4mo ago
How One Hidden Ignore Instructions Can Hijack Your Enterprise RAG
The Threat: Retrieval-Augmented Generation (RAG) pipelines are vulnerable to Indirect Prompt Injection, where malicious instructions hidden in seemingly harmles

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
4mo ago
Cohere’s Multilingual Embedding Model for Search, Retrieval, and Recommendations
Learn how Cohere-embed-multilingual-v3.0 creates embeddings for 100+ languages to power semantic search, retrieval, and recommendation systems.

Hackernoon
🔍 RAG & Vector Search
⚡ AI Lesson
5mo ago
This Perplexity Embedding Model Understands Chunks in Context
Learn how pplx-embed-context-v1-0.6b creates context-aware chunk embeddings for RAG systems with int8 efficiency, 32K context, and late chunking.
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