说明：  三篇关于开源搜索引擎的硕士论文 1、基于Lucene的Web搜索引擎实现 2、基于MapReduce的分布式智能搜索引擎框架研究 3、基于Nutch的垂直搜索引擎的分析与实现
(Three open source search engine on the master' s thesis 1, the Web search engine based on Lucene implementation 2, based on the MapReduce framework of distributed intelligence of the search engine 3, based on the vertical search engine Nutch Analysis and Implementation)