However, traditional Search Engine adopts full-text retrieval technique based on keyword match, and it results in having no all-sided retrieval result and more outlying information.

然而由于传统的搜索引擎基本上都是采用基于关键词匹配的全文检索技术，导致检索结果不全、无关信息过多。

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Lucene is an open source information-retrieval search engine, best known for its full-text indexing capabilities and its ability to search the Internet.

Lucene是一个开源的信息检索搜索引擎，以它的全文本索引能力和搜索互联网能力而著名。

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Because computer can understand the meaning of metadata carried by RDF, our searching engine can provide information retrieval based on concept or content.

由于计算机可以理解rdf描述和携带的元数据的含义，因此可以做到基于内容的精确检索。

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