This MedLibrary.org supplementary page on Xapian is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
| Developed by | xapian.org |
|---|---|
| Latest release | 1.0.9 / 2008-10-31 |
| OS | Cross-platform |
| Type | Search and index API. |
| License | GNU General Public License |
| Website | xapian.org |
Xapian is an open source probabilistic information retrieval library, released under the GNU General Public License (GPL). That is, it is a full text search engine library for programmers.
It is written in C++, with bindings to allow use from Perl, Python, PHP, Java, Tcl, C#, and Ruby. Xapian is highly portable and runs on Linux, Mac OS X, FreeBSD, NetBSD, OpenBSD, Solaris, HP-UX, Tru64, IRIX, and Microsoft Windows.
Xapian is designed to be a highly adaptable toolkit to allow developers to easily add advanced indexing and search facilities to their own applications.
A growing number of organisations and projects are known to be using Xapian including Orange, Gmane, Die Zeit, Delicious, and One Laptop per Child.1
Features
- Transactions: if database update fails in the middle of a transaction, the database is guaranteed to remain in a consistent state.
- Simultaneous search and update, with new documents being immediately visible.
- Support for large databases: Xapian has been proven to be scalable to hundreds of millions of documents.
- Accurate probabilistic ranking: more relevant documents are listed first.
- Phrase and proximity searching.
- Relevance feedback, which improves ranking and can expand a query, find related documents, categorise documents etc.
- Structured Boolean queries, e.g. "race AND condition NOT horse"
- Wildcard search, e.g. "wiki*"
- Spelling correction
- Omega, a packaged solution for adding a search engine to a web site or intranet. Omega can easily be extended and adapted to fit changing requirements.
References
External links
- http://www.xapian.org is the Xapian project website.
- Oligarchy Ltd. and Lemur Consulting Ltd. offer commercial support, consultancy and bespoke development for Xapian.
- http://code.google.com/p/xappy/ is a set of feature rich Python bindings for Xapian.
- http://code.google.com/p/flaxcode/ is a project to build a complete open-source enterprise search engine based on Xapian.
- Recoll is a desktop search tool based on Xapian.
Wikipedia content modification information:
- This page was last modified on 17 November 2008, at 14:10.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Xapian".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.