信息度量公式的探讨

Research on Formulas of Information Measurement

本文针对《管理信息系统》课程中关于信息度量的教学内容,结合信息论的相关知识,对信息量计算的常用公式进行了梳理,将信息度量分别从自信息量的计算、平均自信息量的计算和含有多个独立事件消息所含信息量的计算三个方面来分析。论文还指出了学生用错公式的主要原因是混淆了自信息量与平均信息量的计算公式,提出了教材内容改进意见与编排建议。

The main content of this article is analysis and summary for formulas of information measurement.According on the information theory, the information measurement can be divided into three types： tor selfinformation; for the average self-information and for the information which involved independent events. The paper also points that the cause of misusing formulas is confusion of concepts of self-information and average self-information and gave some measures and suggestion.