A visual guide to multi-hop evidence, graph-based retrieval, query planning, iterative search, verification, retry, and the boundaries of Agentic RAG.
A three-layer framework for RAG evaluation: whether retrieval found the right material, whether the evidence is sufficient and complete, and whether the answer is grounded and correctly cited.
A visual guide to candidate generation, BM25 and dense fusion, Reciprocal Rank Fusion, cross-encoder reranking, and the limits of a two-stage retrieval pipeline.
A visual comparison of inverted indexes, BM25, embeddings, dense retrieval, and the failure modes that determine which evidence a RAG system can find.
A research story about turning 15 years of annual-report PDFs into an auditable benchmark for retrieval, GraphRAG, failure recovery, and grounded question answering.
A visual guide to RAG document preparation: PDF parsing, layout and tables, evidence objects, chunking, metadata, embeddings, and indexes.