With the continuous development of computer technology, web server is also gradually popular in all areas of society, people increasingly rely on the Internet to support the work of the environment, the quality of knowledge service is getting higher and higher. The digital library in order to meet the needs of the people, to apply the computer technology to digital library, the knowledge of resource organization, marking, supervision model and the establishment of inquiry system. Ontology is complete and clear knowledge expression, can overcome the disadvantage of traditional knowledge service model. This paper is about the deficiency of the traditional mode of knowledge service, and further expounds the applicability of ontology knowledge service model based on digital library.%随着计算机技术的不断发展，web服务器也逐渐在社会各个领域普及，人们越来越依赖于互联网支持的工作环境，人们对知识服务的质量也越来越高。数字图书馆为了满足人们的需求，将计算机技术应用到数字图书馆中，对知识相关的资源进行组织，标注，监理模型以及建立查询系统。本体是一种完整并且又比较清晰的知识表达方式，可以克服传统知识服务模式的不足。本文首先讲述的是传统知识服务模式的不足，然后进一步阐述基于本体的数字图书馆知识服务模式的适用性。
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