Full-text patent search engine was developed based on Lucene. Patent full texts were indexed by inverted index structure to speed up the retrieval time.
本文基于Lucene开发了专利全文检索系统,采用倒排索引结构对专利全文进行索引,加快了检索速度。
Finally, based on the structured river network which contains these two indices, several retrieval functions are provided as a way to extract structural information during the structure processing in a cartographic database.
根据包含以上两个索引的结构化河网,提供了若干检索函数,作为地图数据库中结构处理时结构信息的提取手段。
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