1.Hyper Estraier是一个用C语言开发的全文检索引擎,他是由一位日本人开发的.工程注册在sourceforge.net(http://hyperestraier.sourceforge.net). 2.Hyper的特性: 高速度,高稳定性,高可扩展性…(这可都是有原因的,不是瞎吹) P2P架构(可译为端到端的,不是咱们下大片用的p2p) 自带Web Crawler 文档权重排序 良好的多字节支持(想一想，它是由日本人开发的….) 简单实用的API(我看了一遍，真是个个都实用,我能看懂的，也就算简单了) 短语,正则表达式搜索(这个有点过了,不带这个,不是好的Full text Search Engine?) 结构化文档搜索能力(大概就是指可以自行给文档加上一堆属性并搜索这些属性吧?这个我没有实验) Hyper Estraier is a full-text search system. You can search lots of documents for some documents including specified words. If you run a web site, it is useful as your own search engine for pages in your site. Also, it is useful as search utilities of mail boxes and file servers. The characteristic of Hyper Estraier is the following. High performance of search High scalability of target documents Perfect recall ratio by N-gram method High precision by hybrid mechanism of N-gram and morphological analyzer Phrase search, regular expressions, attribute search, and similarity search Multilingualism with Unicode Independent of file format and repository Intelligent web crawler Simple and powerful API Supporting P2P architecture Hyper Estraier is an open-source software released under the terms of the GNU Lesser General Public License. It works on Linux, Windows, Mac OS X, and other UNIX-like systems.