Alex ChernyshAlex ChernyshAgentic behaviorist · Tel Aviv
WritingAssistant

Notes

Notes on AI systems, retrieval, and the work that starts after the demo.

Notes on retrieval, evals, observability, and the engineering that starts once the demo is the easy part.

1 post
Feb 12, 2026
5 min read

Most RAG Failures Start in the Documents

Chunking, titles, metadata, parent-child structure, reranking, and corpus QA for RAG systems.

+2