Castorini

Castorini is a research group that builds open-source toolkits for information retrieval and natural language processing research. The group develops Anserini (Java/Lucene) and Pyserini (Python) to enable reproducible IR experiments at scale. Led by Jimmy Lin and collaborators across academia, Castorini focuses on bridging the gap between academic research and practical search system engineering. Their tools are widely used in the IR research community and are published under permissive open-source licenses.