Core AI

RAG & Vector Search

Retrieval-augmented generation, vector databases, embeddings and semantic search

4,143
lessons
Skills in this topic
View full skill map →
RAG Basics
beginner
Chunk documents with LangChain or LlamaIndex
Vector Stores
intermediate
Set up Pinecone, Weaviate, or pgvector
RAG Evaluation
intermediate
Run RAGAS evaluation on a RAG pipeline
Advanced RAG
advanced
Build a hybrid BM25 + dense retrieval pipeline
All Reads (679) Articles (192)Blog Posts (418)Tutorials (67)Research Papers (2)
Evaluation Metrics for RAG: Measure Retrieval, Generation, and End-to-End Quality With Numbers That…
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 16h ago
Evaluation Metrics for RAG: Measure Retrieval, Generation, and End-to-End Quality With Numbers That…
Last week we compressed retrieved chunks so the model receives only the sentences that matter. Continue reading on Operations Research Bit »
When Does HyDE Help RAG? I Tested 3 Query Types and It Failed on Two
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 20h ago
When Does HyDE Help RAG? I Tested 3 Query Types and It Failed on Two
I tested HyDE Retrieval vs Standard vector search on semantic, proprietary, and keyword queries. HyDE won one and quietly made 2 worse. Continue reading on Towa
10 GenAI Techniques for Integrating a RAG Pipeline with Enterprise Data Warehouses
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 4d ago
10 GenAI Techniques for Integrating a RAG Pipeline with Enterprise Data Warehouses
Practical GenAI patterns for connecting RAG systems with enterprise-scale data platforms Continue reading on Medium »
Towards Data Science 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago
Retrieval Is Filtering, Not Search: A Mental Model for Enterprise RAG
Enterprise Document Intelligence [Vol.1 #7A] - Stop searching strings. Filter line_df and toc_df. Pick anchors small, expand context large The post Retrieval Is
Towards Data Science 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago
When RAG Users Ask Vague Questions: Clarify Once, Learn the Default
Enterprise Document Intelligence [Vol.1 #6bis] - Ask one focused clarification, learn the default from the answer, stay silent next time The post When RAG Users
Towards Data Science 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago
Reconstructing the Table of Contents a PDF Forgot to Ship, So RAG Can Scope by Section
Enterprise Document Intelligence [Vol.1 #5septies] - When a PDF prints a contents page but exposes no outline, two ways to turn it back into structure, plus the
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago
I Spent $500 on RAG Infrastructure Before Realizing These 7 Mistakes Were Killing My Results
I Spent $500 on RAG Infrastructure Before Realizing These 7 Mistakes Were Killing My Results I built a RAG pipeline for private document search. It cost me $500
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago
Amazon Bedrock AgentCore Web Search: Why RAG Agents Fail and How to Ship Live-Grounded Agents
Originally published at twarx.com - read the full interactive version there. Last Updated: June 20, 2026 Every RAG pipeline your team shipped in 2023 is silentl
Building a RAG Pipeline from Scratch: WorldWar-II Edition
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago
Building a RAG Pipeline from Scratch: WorldWar-II Edition
Or: How I taught an LLM to read Wikipedia and answer questions without hallucinating Continue reading on Medium »
Demystifying RAG in Telecom: A Deep Dive into Graph, Vector, and Hybrid Pipelines for O-RAN
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago
Demystifying RAG in Telecom: A Deep Dive into Graph, Vector, and Hybrid Pipelines for O-RAN
There is no one-size-fits-all “best” RAG pipeline for O-RAN; the ideal architecture depends entirely on your specific operational… Continue reading on Medium »
Fixed-Size Chunking Is Killing Your RAG App. Here’s What Actually Works.
Medium · Programming 🔍 RAG & Vector Search ⚡ AI Lesson 1w ago
Fixed-Size Chunking Is Killing Your RAG App. Here’s What Actually Works.
You asked your RAG app a question last week, got an answer that sounded confident and polished, and only later realized it was wrong in a… Continue reading on M
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 2w ago
RAG Rerank: the Highest-Leverage Upgrade to Your Retrieval Pipeline
If your RAG app sometimes answers from the wrong document even though the right one was in your database, the fix usually isn't a better embedding model — it's
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 2w ago
Why Retrieval Quality Can Matter More Than Model Quality in RAG Systems
One thing that stands out while working with RAG systems is how much influence the retriever has on the final answer. A common assumption is that improving the
Why a RAG Pipeline Is Becoming Essential for Enterprise AI Strategies
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 2w ago
Why a RAG Pipeline Is Becoming Essential for Enterprise AI Strategies
Artificial intelligence has moved from experimentation to execution. Businesses are using it to serve customers better, speed up… Continue reading on Medium »
Towards Data Science 🔍 RAG & Vector Search ⚡ AI Lesson 2w ago
Parse PDFs for RAG Locally with Docling: Rich Tables, No Cloud Upload
Enterprise Document Intelligence [Vol.1 #5ter] - Table cells, OCR, captions, headings: cloud-grade structure, running on your own machine. No key, no per-page b
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 2w ago
Your RAG stack depends on your data. I measured how much.
If you've read more than three RAG tutorials, you've absorbed the same advice I have. Use hybrid search, not just dense. Agonise over your chunking strategy. Re
Towards Data Science 🔍 RAG & Vector Search ⚡ AI Lesson 2w ago
When PyMuPDF Can’t See the Table: Parse PDFs for RAG with Azure Layout
Enterprise Document Intelligence [Vol.1 #5bis] - The same relational tables. Native table cells. OCR for scanned pages and images. Captions and headings without
Towards Data Science 🔍 RAG & Vector Search ⚡ AI Lesson 2w ago
Stop Returning Flat Text from a PDF: The Relational Shape RAG Needs
Enterprise Document Intelligence [Vol.1 #5B] - One PDF in, a relational set of DataFrames out: lines, pages, TOC, images, cross-references, captions, spans, and
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 2w ago
I Built a Production RAG System on My M1 Mac for $0
I Built a Production RAG System on My M1 Mac for $0 Most RAG tutorials stop at "it answers questions." But answering questions is table stakes. The real questio
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 3w ago
Your RAG App Keeps Missing the Right Answer. Here’s Why.
Part 3 of 10, Becoming an AI Engineer Continue reading on Medium »
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 3w ago
The Real Reason RAG Evaluation Is Broken — And It’s Not Your Retrieval Pipeline
A practitioner’s observation from building enterprise RAG for solution architects Continue reading on Medium »
RAG Is Not Dead. Boring RAG Is.
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 3w ago
RAG Is Not Dead. Boring RAG Is.
Why the next serious AI systems will retrieve, reason, verify, and only then answer. Continue reading on Medium »
Towards Data Science 🔍 RAG & Vector Search ⚡ AI Lesson 4w ago
From Regex to Vision Models: Which RAG Technique Fits Which Problem
Enterprise Document Intelligence [Vol.1 #4] - A diagnostic across PDFs and questions, and a map of the techniques the rest of the series will cover The post Fro
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 4w ago
Adding web search to our RAG pipeline: what broke and why
We added web search to a local RAG pipeline. It looked straightforward. It wasn’t. What followed: broken assumptions about scoring a safety model that behaved d
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 4w ago
RAG vs Agent: The Decision That Broke My System (And How I Now Enforce It Upfront)
Most people treat the RAG-vs-Agent question as a technical preference. Pick whichever feels right, adjust later. I did that. It cost me two full rebuilds. Here'
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
RAG Quality in Side Projects: Is Perfection Always Necessary?
Introduction: The Perfection Trap and Side Project Realities This morning, while sitting at my computer, I was reviewing the logs of the RAG (Retrieval-Augmente
Vectorless RAG
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Vectorless RAG
-Rethinking Retrieval Without Embeddings Continue reading on Medium »
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
GraphRAG vs Vector RAG: When Simple Vector Search Stops Being Enough
GraphRAG is not just another AI buzzword. It is part of a larger architectural shift happening inside retrieval-augmented generation systems. Most early RAG sys
Towards Data Science 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
RAG Is Burning Money — I Built a Cost Control Layer to Fix It
Most RAG systems are optimized for answer quality, not cost—and that blind spot gets expensive fast. In this article, I break down a production-ready cost contr
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Building RAG Systems That Don’t Lie: What I Learned the Hard Way at Work
My data engineering background made me confident going into RAG. That confidence lasted about two weeks. Continue reading on Medium »
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
When Should You Use Text2Cypher in a GraphRAG Pipeline
Not every GraphRAG question needs the same retrieval pattern. Some questions need the neighborhood around an entity. Some need a summary across a large part of
Building Production-Grade RAG: A Complete Architecture Guide
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Building Production-Grade RAG: A Complete Architecture Guide
Moving beyond the “embed, retrieve, generate” demo every component you need to ship a reliable, observable, enterprise-ready RAG system. Continue reading on Med
Chunking Is Easy. Parsing Is Hard.
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Chunking Is Easy. Parsing Is Hard.
Why Your RAG Pipeline Is Reasoning Over Broken Data. Continue reading on Medium »
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Engineering RAG Systems That Actually Work: Conversational Retrieval, Page Awareness & Debugging (Part 5)
<img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2F
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
RAG- Understanding of Embedding
What is Embedding? After text is split into chunks, the next process is called embedding. In this step, each chunk is converted into vectors (points in vector s
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Cómo construí un sistema RAG para convertirme en Red Teamer con IA — proyecto en Evolve
Llevo meses trabajando en algo que empezó como una necesidad práctica y se ha convertido en la base de mi estrategia para entrar en el mundo del Red Team: un si
RAG Chunking Is Not About Length — It Is About Preserving Meaning
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
RAG Chunking Is Not About Length — It Is About Preserving Meaning
Cutting a long document into fixed-size chunks looks harmless until the most important sentence lands exactly on the boundary. Continue reading on Medium »
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
RAG - Sliding Window, Token Based Chunking and PDF Chunking Packages
Sliding Window Chunking Sliding Window Chunking is a more intensive chunking mechanism. In this method, a window size is defined based on a character or token l
Secure RAG on Google Cloud: From Private Data to Safe Answers
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Secure RAG on Google Cloud: From Private Data to Safe Answers
Most RAG demos look safe because they are small. Continue reading on Google Cloud - Community »
Building a Production RAG Backend for Enterprise Knowledge Bases: Architecture, Decisions, and…
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Building a Production RAG Backend for Enterprise Knowledge Bases: Architecture, Decisions, and…
How I designed and built a retrieval-augmented generation system that ingests from Document360 and SharePoint, stores embeddings in Aurora… Continue reading on
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Your RAG can't answer 'why' -- GraphRAG finds what vector search misses
The question that broke my RAG pipeline I had a solid RAG setup. Embeddings, vector store, top-k retrieval, the whole thing. It handled factual lookups just fin
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
Building a RAG Agent for Pharmacy Stock Optimization with Gemini, ChromaDB and LangGraph
Introduction FarmaStock AI is an academic Generative AI project focused on a real-world problem: how to make pharmacy stock analysis easier to understand and ex
What is RAG and How Does It Work with Modern AI Systems?
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 1mo ago
What is RAG and How Does It Work with Modern AI Systems?
A practical guide to Retrieval-Augmented Generation — the architecture pattern powering enterprise AI, coding agents, and the next… Continue reading on Jonathan
Most RAG Systems Waste 60% of Their Retrieval Calls. Skill-RAG Fixes That.
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 2mo ago
Most RAG Systems Waste 60% of Their Retrieval Calls. Skill-RAG Fixes That.
I audited a RAG pipeline at work last month. 43% of the retrieval calls were for questions the model already knew the answer to. Another… Continue reading on Ar
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 2mo ago
pdfmux vs LlamaParse vs Docling vs Unstructured: Which PDF extractor for RAG in 2026?
TL;DR : For RAG pipelines in 2026, pick pdfmux if you need free, local, benchmark-proven extraction with per-page confidence scoring (0.905 on opendataloader-be
Understanding Retrieval-Augmented Generation (RAG): The Future of Smarter AI
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 2mo ago
Understanding Retrieval-Augmented Generation (RAG): The Future of Smarter AI
Artificial Intelligence has evolved rapidly, but one major limitation still exists: models don’t always know everything and sometimes they… Continue reading on
Dev.to AI 🔍 RAG & Vector Search ⚡ AI Lesson 2mo ago
Beyond Basic RAG: Architecting a Fault-Tolerant, Agentic AI Platform
<img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2F
GraphRAG beyond the demo: Lessons from the trenches
Medium · AI 🔍 RAG & Vector Search ⚡ AI Lesson 2mo ago
GraphRAG beyond the demo: Lessons from the trenches
When to use it, why it’s hard to ship, and how to make it reliable Continue reading on Data Science + AI at Microsoft »