Pg_vectorsearch: An index that is faster than pgvector's IVFFlat and HNSW

A new open-source project called pg_vectorsearch has been developed, which boasts faster performance compared to two existing indexing methods: IVFFlat and HNSW. pg_vectorsearch is designed for use with PostgreSQL and is built on top of the existing pgvector library. The project aims to provide a more efficient way to search for vectors in PostgreSQL databases, making it ideal for applications that require fast and accurate vector similarity searches.