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#retrieval

3 posts

What is reranking — and why it's the difference between finding documents and finding answers

First-stage retrieval finds 100 matches. Reranking identifies the 5 that actually answer your question. Here's why that distinction matters for legal AI.

reranking cross-encoder legal AI retrieval search quality

How hybrid search works — and why your legal AI tool probably uses only half the equation

Keyword search finds exact article numbers. Semantic search finds related concepts. Hybrid search does both — and the difference is measurable.

hybrid search BM25 semantic search legal AI retrieval

What is chunking — and why it's the invisible foundation of legal AI quality

Before your legal AI tool can answer a question, it has to cut the law into pieces. The way it cuts determines whether the answer includes the exception that changes everything — or misses it entirely.

chunking RAG legal AI Belgian tax retrieval NLP