Ht-//Dig

Infobox_Software
name = ht://Dig


caption =
developer =
latest_release_version = 3.2.0b6
latest_release_date = June 16, 2004
operating_system = Unix
programming_language = C++
genre = Web search engine
license = GNU General Public License
website = [http://www.htdig.org/ www.htdig.org]

ht://Dig is an free software indexing and searching system created in 1995 by Andrew Scherpbier while he was employed at San Diego State University.Winston, A.:"OpenVMS with Apache, OSU and WASD: The Nonstop Webserver", page 179. Digital Press, 2003] [http://www.htdig.org/author.html ht://Dig: About the Author] ] It can provide a search engine for a single website, as opposed to search engines that index the Internet such as Google and Yahoo!.

It includes three groups of files: a set of tools for indexing, a set of tools for searching, and a set of HTML files for building the user interface to access the search engine. [http://www.linux-mag.com/id/510/ Review by "Linux Magazine"] ] ht://Dig works differently from most search engines as most engines use a two-step process, building an index and searching it. ht://Dig indexes pages in full, then processes the pages into a searchable form later using soundex and metaphone.Skiena, S.:"The Algorithm Design Manual", page 408. Springer Publishing, 1998] ht://Dig also stores fuzzy match information instead of using a dynamic algorithm. [Behcet Sarikaya: "Geographic Location in the Internet", pages 145-146. Springer Publishing, 2002] At one time, over 500 organizations used ht://Dig to index sites they owned. Notable sites included Blizzard Entertainment, Greenpeace, and The Mozilla Foundation. [http://www.htdig.org/uses.html ht://Dig: Sites that Use ht://Dig] ]

As of March 2008, the last official release is Dig 3.2.0b6 announced on June 16, 2004. Only sporadic maintenance is in evidence since that date at the project's bug reporting page. It was used by the GNU project's website for a long time but was replaced in 2008 with Hyper Estraier.

See also

* Lucene
* Xapian

References

External links

* [http://www.mediawiki.org/wiki/Extension:HtdigSearch HtdigSearch extension for Mediawiki]
* [http://www.htdig.org/ Official website]
* [http://www.searchtools.com/ Search Tools for Web Sites and Intranets] - some material about various search tools (articles, comparisons, etc.)