信息检索系统运行的熵流模式  

Entropy Model of Information Retrieval System Running

作　　者：陈久庚[1] 

机构地区：[1]中国科学技术信息研究所,北京100038

出　　处：《情报学报》2012年第5期495-507,共13页Journal of the China Society for Scientific and Technical Information

摘　　要：根据耗散结构热力学理论的分析指出,信息检索系统的运行是向系统输入的熵流对系统状态函数即服务参数作用的非线性过程,其中,负熵流的作用有一个周期.这个非线性过程尚不能表达成数学关系式,而是用图解定性描述了系统运行的模式,案例中3家文献检索系统作了验证.It was showed, according to the analysis of the theory of dissipation structure thermodynamics, that the running of information retrieval system （IRS） was a non-linear course of the input entropy-flow acting on IRS state function i.e. service parameter and there was cycle for the action of negative entropy-flow. The non-line course could not be expressed as some mathematic formulae, but the running models were qualitatively described in graphical method and identified in case study of 3 literature retrieval systems.

关 键 词：信息检索 信息服务 熵的应用 

分 类 号：G354.4[文化科学—情报学]