DR. Li is a specialist in information retrieval.

李博士是位信息检索专家。

Dr. Li is a specialist in information retrieval.

李博士是位信息检索专家.

Information Retrieval Application Service Definition and Protocol Specification.

信息检索应用服务定义和协议规范。

Therefore, cress-language information retrieval has been hot in research.

因此，跨语言信息检索成为当今的研究热点。

Practice on? Information Retrieval and utilization?

信息检索与利用实践？？？？？？？。

Practice on?Information Retrieval and utilization?

信息检索与利用实践???????。

The quick proliferation of information resource brings new challenge to information retrieval.

信息资源的激增给信息检索提出新的挑战.

New words recognition and ambiguity resolving have vital effect on information retrieval precision.

新词识别和模糊性解决信息检索精度有重要的影响。

Web crawler is an important component for search engine and Web information retrieval system.

Web爬虫是搜索引擎和Web信息检索系统的重要基础.

In information retrieval, recall and precision are regarded as two inter-constraint measures.

在信息检索领域，查全率与查准率是一对相互制约的指标。