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| caption =
| caption =
| developer = xapian.org
| developer = xapian.org
| latest release version = 1.4.5<ref>https://xapian.org/docs/xapian-core-1.4.5/NEWS (accessed on 2018-03-31)</ref>
| latest release version = 1.4.5<ref name=home_page/>
| latest release date = {{Start date and age|2017|10|16}}
| latest release date = {{Start date and age|2017|10|16}}
| programming language = [[C++]]
| programming language = [[C++]]
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| genre = [[Search algorithm|Search]] and [[index (search engine)|index]] [[Application programming interface|API]].
| genre = [[Search algorithm|Search]] and [[index (search engine)|index]] [[Application programming interface|API]].
| license = [[GNU General Public License]]
| license = [[GNU General Public License]]
| website = {{URL|http://xapian.org/}}
| website = {{URL|https://xapian.org/}}
}}
}}
'''Xapian''' is an [[free and open source]] probabilistic [[information retrieval]] library, released under the [[GNU General Public License]] (GPL).<ref name=features>{{cite web |url=http://xapian.org/features |title=The Xapian Project : Features |access-date=2018-03-31}}</ref> It is a full text [[search engine (computing)|search engine]] library for programmers.
'''Xapian''' is a [[free and open source]] probabilistic [[information retrieval]] library, released under the [[GNU General Public License]] (GPL).<ref name=features>{{cite web |url=http://xapian.org/features |title=The Xapian Project : Features |access-date=2018-03-31}}</ref> It is a full text [[search engine (computing)|search engine]] library for programmers.


It is written in [[C++]], with bindings to allow use from [[Perl]], [[Python (programming language)|Python]] (2 and 3), [[PHP]] (5 and 7), [[Java (Sun)|Java]], [[Tcl]], [[C Sharp (programming language)|C#]], [[Ruby programming language|Ruby]], [[Lua (programming language)|Lua]], [[Erlang (programming language)|Erlang]], [[Node.js]] and [[R_(programming_language)|R]]<ref>{{cite web |url=https://xapian.org/ |title=The Xapian Project |access-date=2018-03-31}}</ref><ref>[https://github.com/amandaJayanetti/RXapian#readme RXapian]</ref>. Xapian is highly portable and runs on [[Linux]], [[OS X]], [[FreeBSD]], [[NetBSD]], [[OpenBSD]], [[Solaris (operating system)|Solaris]], [[HP-UX]], [[AIX]], [[Windows (operating system)|Windows]], [[OS/2]]<ref>{{cite web |url=http://freshmeat.net/projects/xapian/releases/273896 |title=Version 1.0.6 of Xapian and Omega |website=freshmeat.net|access-date=2018-03-31 |archive-url=https://web.archive.org/web/20110612182915/http://freshmeat.net/projects/xapian/releases/273896 |archive-date=2011-06-12}}</ref><ref name=features/> and [[Hurd]], <ref>[http://buildd.debian-ports.org/fetch.php?&pkg=xapian-core&ver=1.0.12-2&arch=hurd-i386&stamp=1242995814&file=log&as=raw Debian built success report for GNU Hurd]{{dead link|date=July 2016 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{cite web |url=https://packages.debian.org/search?suite=all&arch=hurd-i386&searchon=names&keywords=xapian |title=Debian -- Package Search Results -- xapian |access-date=2018-03-31}}</ref> as well as [[Tru64]].{{Citation needed}}
It is written in [[C++]], with bindings to allow use from [[Perl]], [[Python (programming language)|Python]] (2 and 3), [[PHP]] (5 and 7), [[Java (Sun)|Java]], [[Tcl]], [[C Sharp (programming language)|C#]], [[Ruby programming language|Ruby]], [[Lua (programming language)|Lua]], [[Erlang (programming language)|Erlang]], [[Node.js]] and [[R_(programming_language)|R]]<ref name=home_page>{{cite web |url=https://xapian.org/ |title=The Xapian Project |access-date=2018-03-31}}</ref><ref>[https://github.com/amandaJayanetti/RXapian#readme RXapian]</ref>. Xapian is highly portable and runs on [[Linux]], [[OS X]], [[FreeBSD]], [[NetBSD]], [[OpenBSD]], [[Solaris (operating system)|Solaris]], [[HP-UX]], [[AIX]], [[Windows (operating system)|Windows]], [[OS/2]]<ref>{{cite web |url=http://freshmeat.net/projects/xapian/releases/273896 |title=Version 1.0.6 of Xapian and Omega |website=freshmeat.net|access-date=2018-03-31 |archive-url=https://web.archive.org/web/20110612182915/http://freshmeat.net/projects/xapian/releases/273896 |archive-date=2011-06-12}}</ref><ref name=features/> and [[Hurd]], <ref>[http://buildd.debian-ports.org/fetch.php?&pkg=xapian-core&ver=1.0.12-2&arch=hurd-i386&stamp=1242995814&file=log&as=raw Debian built success report for GNU Hurd]{{dead link|date=July 2016 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{cite web |url=https://packages.debian.org/search?suite=all&arch=hurd-i386&searchon=names&keywords=xapian |title=Debian -- Package Search Results -- xapian |access-date=2018-03-31}}</ref> as well as [[Tru64]].{{Citation needed}}


Xapian allows developers to add advanced indexing and search facilities to their own applications.
Xapian allows developers to add advanced indexing and search facilities to their own applications.

Revision as of 16:21, 31 March 2018

Xapian
Developer(s)xapian.org
Stable release
1.4.5[1] / October 16, 2017; 7 years ago (2017-10-16)
Repository
Written inC++
Operating systemCross-platform
TypeSearch and index API.
LicenseGNU General Public License
Websitexapian.org

Xapian is a free and open source probabilistic information retrieval library, released under the GNU General Public License (GPL).[2] It is a full text search engine library for programmers.

It is written in C++, with bindings to allow use from Perl, Python (2 and 3), PHP (5 and 7), Java, Tcl, C#, Ruby, Lua, Erlang, Node.js and R[1][3]. Xapian is highly portable and runs on Linux, OS X, FreeBSD, NetBSD, OpenBSD, Solaris, HP-UX, AIX, Windows, OS/2[4][2] and Hurd, [5][6] as well as Tru64.[citation needed]

Xapian allows developers to add advanced indexing and search facilities to their own applications. Organisations and projects using Xapian include the Library of the University of Cologne, Debian, Die Zeit, MoinMoin, and One Laptop per Child.[7]

Features[2]

  • Supports Unicode 9.0 (including codepoints beyond the BMP) and stores indexed text in UTF-8.
  • 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 scale 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
  • Synonyms
  • 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.

See also

References

  1. ^ a b "The Xapian Project". Retrieved 2018-03-31.
  2. ^ a b c "The Xapian Project : Features". Retrieved 2018-03-31.
  3. ^ RXapian
  4. ^ "Version 1.0.6 of Xapian and Omega". freshmeat.net. Archived from the original on 2011-06-12. Retrieved 2018-03-31.
  5. ^ Debian built success report for GNU Hurd[permanent dead link]
  6. ^ "Debian -- Package Search Results -- xapian". Retrieved 2018-03-31.
  7. ^ "Xapian Users". Retrieved 2018-03-31.
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