排序方式： 共有3条查询结果，搜索用时 78 毫秒
1
1.
网络环境下的知识挖掘 总被引：9，自引：0，他引：9
当前网络信息大爆炸，要从大量信息中获得所需知识就需要运用知识挖掘方法。本文首先对数据、信息、知识三个概念进行了区分，阐述了网络知识挖掘的概念及类型，并从数据仓库、语义网络和XML等底层信息加工组织方法上对网络知识挖掘进行探讨。 相似文献
2.
Nanotechnology, like other emerging technologies that increasingly characterize the dynamic of our era, makes specific demands on datamining to track and interpret efficiently what is happening, through publications and other scientific output. We here propose and describe a strategy based on an automated lexical modular methodology to overcome rapidly evolving content and classification problems, which may otherwise accommodate poor quality of data and expert bias, with potential dire consequences for interpretation, decision and strategy. The proposed methodology is based on an initial nanostring enriched and screened by eight subfields, automatically identified and defined through the journal inter-citation network density displayed in the initial core nanodataset. Relevant keywords linked to each subfield are then tested for their specificity and relevance before being sequentially incorporated to build a modular query. We then, as a first test, compare the database constructed using this methodology for years 2003 and 2005 with those obtained by other approaches previously used to cover and explore the nanotechnology dynamic. Finally, using the inherent transparency, portablity and replicability of our methodology, we offer, in order to help our initial query evolve and develop, a set of evaluation processes for tests by researchers in the nano field, other scientometric teams and intelligence experts involved in decision-making processes. 相似文献
3.
张浩良 《广东技术师范学院学报》2001,(3):9-13
经济全球化使企业在动态的商业环境中面临前所未有的激烈竞争，顾客数据采掘将帮助企业快速响应外部需求，获取新的竞争优势。本文分析数据采掘所能获得的信息与知识及其对企业的价值，并从技术、管理制度、企业文化和人的作用等方面描述数据采掘的实施。 相似文献
1