Introduction

PISA is a text search engine able to run on large-scale collections of documents. It allows researchers to experiment with state-of-the-art techniques, allowing an ideal environment for rapid development.

Some features of PISA are listed below:

• Written in C++ for performance
• Indexing, parsing & sharding capabilities
• Many index compression methods supported
• Many query processing algorithms supported
• Implementation of document reordering
• Free and open-source with permissive license

Note

PISA is still in its unstable release, and no stability or backwards-compatibility is guaranteed with each new version. New features are constantly added, and contributions are welcome!