摘要
本文探讨了信息熵的引入背景,指出申农引入的信息熵表达式是与玻尔兹曼分布相对应的物理熵表达式的推广。随着信息论的广泛应用,此表达式的应用受到一定的局限。本文以信息光学为例来说明这种局限性,并给出了信息光学中信息熵的一般表达式。
The derived 'background of Shannon entropy is discussed.It is showen that the Shannon entropy is the develpment of physical entropy which corresponds to Boltzmann distrabution. Following the develpment of information theory the expression about Shannon entropy has some restriction in application. In this paper the res-triction of the expression is demonstration for a example of info- rmation optics, trad the general expression of information entropy in information optics is provided.
出处
《河北大学学报(自然科学版)》
CAS
1989年第1期68-71,共4页
Journal of Hebei University(Natural Science Edition)
关键词
信息光学
信息熵
Shannon, eniropy, information, optics.