决策信息系统不确定性的熵度量  

Measurement Guide Line Using Entropy of the Uncertainty of Decision Information System

作　　者：李嘉[1] 

机构地区：[1]上海农林职业技术学院计算机应用系,上海201600

出　　处：《计算机与数字工程》2008年第4期29-34,共6页Computer & Digital Engineering

摘　　要：提出基于Rough集信息论观点的决策表不确定性的熵度量指标,相比代数论观点的决策表不确定性度量指标在含义上更清晰,对不确定性的度量更全面。运用不同的熵度量指标,可分别度量一致性决策信息系统和不一致性决策信息系统的规则前件不确定性、规则后件不确定性、规则整体随机性以及决策表整体不确定性,并对同一决策信息系统运用不同的熵度量指标对其不确定性进行分析。A kind of measurement guide line using entropy of the uncertainty of decision information system is presented, which is based on information viewpoint of Rough Set Theory. Compared with measurement guide line baseding on algebraic viewpoint, this one is clearer and more comprehensive. With different measurement guide line using entropy, we can measure different kind of uncertainty of decision information system, in despite of consistent one or inconsistent one. And the uncertainty of the same decision information system is analysed by different measurement guide line using entropy.

关 键 词：粗糙集 熵 规则 不确定性 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]