Easy to use open source fast database for search | Good alternative to Elasticsearch now | Drop-in replacement for E in the ELK soon

Developer friendly Natural Language Processing ✨

A Collection of BM25 Algorithms in Python

Similarities: a toolkit for similarity calculation and semantic search. 语义相似度计算、匹配搜索工具包，支持文本和图像，开箱即用。

📑 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.

IResearch is a cross-platform, high-performance document oriented search engine library written entirely in C++ with the focus on a pluggability of different ranking/similarity models

A Python Search Engine for the Common Man 🥸

Emacs package that helps org-mode users (re)discover similar documents

Document Search Engine Tool

Fast Full Text Search based on BM25

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

Tunable full text search engine in JavaScript that: (1) works natively on web apps like Express.js; (2) easy to customize (via BM25) to specific types of documents (e.g. tweets, scientifc journals); (3) is deployable on either the client-side or the server side.

The fast python bm25 algorithm implemented with reverted index

Sentence-Transformers Information Retrieval example on Chinese

Improving the effectiveness Lucene's BM25 (and testing it using Yahoo! Answers and Stack Overflow collections)

Python implementation of BM25 function for document retrieval

Text Similarity using BM25 algorithm and WordNet

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