数据挖掘就是从大量的、不完全的、有噪声的、模糊的、随机的数据中,提取隐含在其中的、人们事先不知道的、但又是有用的信息和知识的过程。Web数据挖掘是数据挖掘技术在网络信息处理中的应用。它是从Web资源中抽取有用信息或知识的过程,是对Web资源中蕴涵的、未知的、有潜在应用价值的模式的提取。Web数据挖掘技术是一项综合技术,涉及Web技术、人工智能、计算机语言学、信息学、统计学等多个领域。 Data mining is the process of extracting hidden, unobstructed but useful information and knowledge implicit in large, incomplete, noisy, obscure, random data. Web data mining is the application of data mining in network information processing. It is a process of extracting useful information or knowledge from Web resources and extracting the implied, unknown and potential application value of Web resources. Web data mining technology is an integrated technology, involving Web technology, artificial intelligence, computer linguistics, informatics, statistics and other fields.