MG4J is a highly customizable, high-performance, full-text Java search engine for large document collections. It provides state-of-the-art features (such as BM25/BM25F scoring) and new research algorithms.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.