|
Xapian is an open source probabilistic information retrieval library, released under the GNU General Public License (GPL). 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#, Ruby, and Lua. Xapian is highly portable and runs on Linux, OS X, FreeBSD, NetBSD, OpenBSD, Solaris, HP-UX, Tru64, IRIX, Windows,〔(Features of Xapian )〕 Hurd,〔(Debian built success report for GNU Hurd )〕 and OS/2.〔(Freshmeat announcement for Xapian 1.0.6 )〕 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 Debian, Gmane, Die Zeit, Delicious, MoinMoin, and One Laptop per Child.〔(Users of Xapian )〕 ==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 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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Xapian」の詳細全文を読む スポンサード リンク
|