术)Р张德政Р联系方式:?bigbank@?zdzchina@?——62334547РCognition Based Knowledge Discovery in Database (DM(KDD) plex Data Object)Р2 知识发现的基本概念Р2.1 数据、信息、知识А2.2 DM(KDD)定义А2.3 DM(KDD)对象А2.4 DM(KDD)功能А2.5 DM(KDD)技术方法Р数据、信息、知识Р事实(facts):人类思想和社会活动的客观映射。?数据(data):事实的数字化、编码化和序列化。Р信息(information):数据在信息媒介上的映射。Р知识(knowledge):对信息的加工、吸收、提取、评价的结果。РWe often see data as a string of bits, or numbers and symbols, or “objects” which we collect daily.РInformation is data reduced to the minimum necessary to characterize the data.РKnowledge is integrated information, including facts and their relations, which have been perceived, discovered, or learned as our “mental pictures”.Р数据、信息、知识的关系РMISРDSSРMIS: Management ? Information System?DSS: Decision Support ? SystemsРValueР中医临床数据——非结构化数据采集Р中医临床数据Р中医临床数据——全文数据库Р中医临床数据——结构化数据库
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