社会信息化进程的加快,一方面给公众的社会生活带来了巨大便利,提高了各个部门的工作效率,另一方面也进一步提高了公众的信息需求度,公众对信息服务提出了更高的要求。与以往相比,用户信息需求呈现出多元化、个性化特征,用户更加重视信息的时效性、新颖性、准确性,需要更为方便快捷的一站式信息服务,同时随着互联网的不断发展,网上信息资源量也在不断增加,直接导致用户在海量的信息资源中 The acceleration of the process of social informatization has brought tremendous convenience to the social life of the public on the one hand and has improved the efficiency of various departments. On the other hand, it has further raised the public’s demand for information and the public has put forward higher demands on information services Claim. Compared with the past, the demand for user information presents a diversified and personalized features. Users pay more attention to the timeliness, novelty and accuracy of information, and need a more convenient and quick one-stop information service. Meanwhile, with the continuous development of the Internet , Online information resources are also increasing, a direct result of the user in the massive information resources