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Xapian is an Open Source Probabilistic Information Retrieval library,
released under the GPL. It's written in C++, with bindings to allow use
from other languages.
Xapian is designed to be a highly adaptable toolkit to allow developers to
easily add advanced indexing and search facilities to their own
applications.
Xapian features include:
- Ranked probabilistic search - word importance weighting
- Relevance feedback
- Phrase and proximity searching
- Full range of structured boolean search operators
- Term stemming
- Database files > 2GB
- Platform independent data formats
- Allows simultaneous update and searching.
WWW: http://www.xapian.org
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