DeWu Technology
Dec 4, 2020 · Fundamentals
Introduction to Search Engine Technology and Information Retrieval
The article surveys core search‑engine technology—document hierarchy, flat and vertical inverted indexes, query operators for building and merging score lists, and ranking models from Boolean and BM25 to language‑model approaches like Indri—providing a foundational overview of information retrieval.
BM25Inverted IndexSearch Engine
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