发布于 2016-02-24 00:26:25 | 124 次阅读 | 评论: 0 | 来源: 网友投递
Apache Lucene全文检索引擎工具包
Lucene是apache软件基金会4 jakarta项目组的一个子项目，是一个开放源代码的全文检索引擎工具包，即它不是一个完整的全文检索引擎，而是一个全文检索引擎的架构，提供了完整的查询引擎和索引引擎，部分文本分析引擎（英文与德文两种西方语言）。Lucene的目的是为软件开发人员提供一个简单易用的工具包，以方便的在目标系统中实现全文检索的功能，或者是以此为基础建立起完整的全文检索引擎。
Apache Lucene 5.5.0 发布了，该版本包含 bug 修复、优化和改进，值得关注的内容有：
* JoinUtil.createJoinQuery can now join on numeric doc values fields
* BlendedInfixSuggester now has an exponential reciprocal scoring
model, to more strongly favor suggestions with matches closer to the
beginning
* CustomAnalyzer has improved (compile time) type safety
* DFISimilarity implements the divergence from independence scoring model
* Fully wrap any other merge policy using MergePolicyWrapper
* Sandbox geo point queries have graduated into the spatial module,
and now use a more efficient binary term encoding for smaller index
size, faster indexing, and decreased search-time heap usage
* BooleanQuery performs some new query optimizations
* TermsQuery constructors are more GC efficient
完整记录请看：https://lucene.apache.org/core/5_5_0/changes/Changes.html
下载地址：http://lucene.apache.org/core/mirrors-core-latest-redir.html