关键词特性描述非结构化文本内容中出现的单词和短语。
The keyword features describe the occurrences of words and phrases in the unstructured text content.
通过对查询短语的结构分析，发现查询短语通常由关键词和特征词构成。
By analysis of query phrase structure, the author finds that the query phrase is generally composed of both keyword and the feature word.
第一章介绍论文的背景、原理和必要性，同时列出关键词的解释以及论文的结构。
Chapter One focuses on the background, rationale and necessity of the study, and gives the term definitions and overall structure as well.
对博硕士论文数据集的XML标引、索引、关键词检索和结构化检索分别进行设计和实现，构建一个基于XML的中文博硕士论文检索系统。
It designs and implements XML tagging, indexing, keyword retrieval and structural retrieval on Chinese thesis, and finally constructs an XML-based Chinese thesis retrieval system.
对博硕士论文数据集的XML标引、索引、关键词检索和结构化检索分别进行设计和实现，构建一个基于XML的中文博硕士论文检索系统。
It designs and implements XML tagging, indexing, keyword retrieval and structural retrieval on Chinese thesis, and finally constructs an XML-based Chinese thesis retrieval system.
应用推荐