文本挖掘及其关键技术与方法

从1969年美国国防部的计算机网络ARPANET起步,至今已有32年历史的Internet,已经发展成为包含多种信息资源、站点遍布全球的巨大信息服务系统,为其用户提供了极具价值的、巨大的数据资料。在数字图书馆和Internet上,在线可获得的信息量呈指数级增长,导致了信息爆炸。WWW以超文本的形式呈现给用户,一个网页里包含了多种不同的数据类型,其中最主要的信息源就是文本数据。文本表达了大量的、丰富的信息,同时包含了许多未被所有者发现的潜在知

The Text Mining and its Key Technigues and Methods

With the dramatically development of Internet, the information processing and management technology onWWW have become a great important branch of data mining and data warehouse. Especially, nowadays, Text Miningis marvelously emerging and plays an important role in interrelated fields. So it is worth summarizing the contentabout text mining from its definition to relational methods and techniques. In this paper, combined to comparativelymature data mining technology, we present the definition of text mining and the multi-stage text mining process mod-el. Moreover, this paper roundly introduces the key areas of text mining and some of the powerful text analysis tech-niques, including: Word Automatic Segmenting, Feature Representation, Feature Extraction, Text Categorization,Text Clustering, Text Summarization, Information Extraction, Pattern Quality Evaluation, etc. These techniquescover the whole process from information preprocessing to knowledge obtaining.