Yioop! is a PHP search engine. Yioop! can be configured as either a general purpose search engine for the whole Web or it can be configured to provide search results for a set of URLs or domains. Yioop can crawl pages or can directly index archives such as ARC and WARC. It supports indexing several file formats such as HTML, Atom, PDF, DOC, PPT, RTF, RSS, XML, SVG, PNG, JPG, BMP, GIF, and sitemaps. The Yioop! crawler can be deployed on one or many machines. It supports having one or more to crawl scheduler processes, as well as multiple fetchers and mirrors. Crawling respects robots.txt including Crawl-delay. Yioop! crawls are stored in a Web archive format that is easy to move around. Crawling can be done on one machine and the results deployed elsewhere. Yioop! supports mixing of crawls. Yioop! comes with a search front end that can be localized as desired using a GUI. This GUI supports RTL languages. Management of crawls can also be done using this GUI. Yioop! can be configured in a straightforward manner to make use of file caching or memcache if available.
|Tags||Open Source search engine Indexing|
|Operating Systems||Linux Windows Mac OS X|
|Implementation||Apache gd SQLite curl PHP MySQL PDO|
|Translations||English Japanese Korean Vietnamese French Arabic Persian|
Release Notes: This release adds a simple language called Page Rules for controlling how data is extracted from webpages during the summary creation phase of indexing. It also adds the ability to index records coming from a database query and adds a generic text importer which works on plain text, gzip'd, and bzip'd text records. Other features in this version of Yioop are Atom support as a News Feed Search Source, a dedicated process new_updater.php for handling news updates, and a better algorithm for distributing archive data during an archive crawl. Many other minor improvements have been made.
Release Notes: This release supports materializing as new indexes query-based combinations (crawl mixes) of old search indexes. This should make query performance of crawl mixes much better. Cache pages of search results now have a new history UI which allows you to search cache pages in all indexes you have, much like the way Internet Archive does. Yioop now supports spell corrections on searches after they have been performed, and it has an API for transliterating between roman and other scripts. Query performance has been improved over previous versions, and lots of minor bugs have been fixed.
Release Notes: This release adds an activity to manage search media sources. For now, one can add Video and RSS sources. When configured, RSS feeds download hourly and are integrated into search results. Also new is a command line tool for configuring Yioop in VPS settings. An Italian stemmer has been added, as well as more translations. This version implements some important bugfixes in robot handling, as well as unit testing of these. Yioop! now works in PHP 5.4 as well as PHP 5.3, and plays friendlier with more recent versions of Xampp on Windows.
Release Notes: This release adds image and video subsearch abilities and improves the formatting of Yioop on smart phones. Exact phrase searching is now done using only posting list information, rather than regex. Archive crawls can now, like Web crawls, exploit the presence of multiple queue_servers. Index iterators and summary lookup operations have been factored apart to better optimize Yioop search speed. Improvements have also been made to keyword suggestions.
Release Notes: This release adds initial support for word suggestions as a user types in queries. The bigramming used to speed common two word queries now works with n word grams. N word gram filter files can now be created using Wikipedia raw page count dumps. This version adds support for * and $ in allowed- and disallowed-to-crawl sites. Using this, the user can crawl sites to a fixed depth. Robots.txt processing now supports * and $ in robot.txt paths. Support for NOSNIPPET, NOARCHIVE, and X-Robots-tag HTTP headers has also been implemented. A tool for editing search summaries after a crawl has also been added.