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bm25
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Easy to use open source fast database for search | Good alternative to Elasticsearch now | Drop-in replacement for E in the ELK stack
ParadeDB is a modern Elasticsearch alternative built on Postgres. Built for real-time, update-heavy workloads.
The AI-native database built for LLM applications, providing incredibly fast hybrid search of dense vector, sparse vector, tensor (multi-vector), and full-text
AdalFlow: The library to build & auto-optimize LLM applications.
SeekStorm - sub-millisecond full-text search library & multi-tenancy server in Rust
Developer friendly Natural Language Processing ✨
Fast lexical search implementing BM25 in Python using Numpy, Numba and Scipy
A Collection of BM25 Algorithms in Python
Similarities: a toolkit for similarity calculation and semantic search. 相似度计算、匹配搜索工具包，支持亿级数据文搜文、文搜图、图搜图，python3开发，开箱即用。
对四种句子/文本相似度计算方法进行实验与比较
A Python implementation of the BM25 ranking function.
A Python Search Engine for Humans 🥸
IResearch is a cross-platform, high-performance search analytics library written entirely in C++ with the focus on a pluggability of different ranking/similarity models
Emacs package that helps org-mode users (re)discover similar documents
Document Search Engine Tool
Fast Full Text Search based on BM25
BM25 search implemented in PL/pgSQL