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⚡ AI Lessons

Dev.to · jacobjerryarackal
1mo ago
PCA (Principal Component Analysis): Finding the Hidden Structure in High‑Dimensional Data
1. The Problem It Solves Imagine you have a dataset with 100 features, for example, pixel...

Dev.to · jacobjerryarackal
1mo ago
XGBoost: When Gradient Boosting Meets Regularization
1. The Problem It Solves Imagine you’re a loan officer at a bank. You have thousands of...

Dev.to · jacobjerryarackal
1mo ago
Why “Just Prompting” Fails on Private Data: A RAG Post‑Mortem
The Problem You have a 400‑page internal handbook includes compliance rules, HR policies,...

Dev.to · jacobjerryarackal
2mo ago
I Built a RAG Pipeline. Then I Realized Retrieval Is the Real Model
Everyone talks about the LLM. GPT‑4, Claude, Gemini – that’s the celebrity. But after building my...

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