AdalFlow: The library to build & auto-optimize LLM applications.

A Collection of BM25 Algorithms in Python

Fast lexical search implementing BM25 in Python using Numpy, Numba and Scipy

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。

Easy-to-Use RAG Framework; CCF AIOps International Challenge 2024 Top3 Solution; CCF AIOps 国际挑战赛 2024 季军方案

Neural Search

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 🥸

Document Search Engine Tool

The fast python bm25 algorithm implemented with reverted index

Efficient BM25 with DuckDB 🦆

Code for the ACL 2023 long paper - Expand, Rerank, and Retrieve: Query Reranking for Open-Domain Question Answering

Using business-level retrieval system (BM25) with Python in just a few lines.

Sentence-Transformers Information Retrieval example on Chinese

Python implementation of BM25 function for document retrieval

Command-line tool that finds lexically similar documents in relation to a reference text file or ad-hoc query

Contextual Retrieval solves this problem by prepending chunk-specific explanatory context to each chunk before embedding (“Contextual Embeddings”) and creating the BM25 index (“Contextual BM25”).

Text Similarity using BM25 algorithm and WordNet

BestRAG: A library for hybrid RAG, combining dense, sparse, and late interaction methods for efficient document storage and search.