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

Postgres for Search and Analytics

The AI-native database built for LLM applications, providing incredibly fast full-text and vector search

Developer friendly Natural Language Processing ✨

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。

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 search analytics library written entirely in C++ with the focus on a pluggability of different ranking/similarity models

A Python Search Engine for Humans 🥸

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

Document Search Engine Tool

Fast Full Text Search based on BM25

SeekStorm - sub-millisecond full-text search library & multi-tenancy server in Rust

The fast python bm25 algorithm implemented with reverted index

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.

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

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

Sentence-Transformers Information Retrieval example on Chinese