南京大学学报(自然科学版) ›› 2022, Vol. 58 ›› Issue (1): 7181.doi: 10.13232/j.cnki.jnju.2022.01.008
摘要:
作为人工智能领域的一个重要方向,粒计算在数据挖掘和知识发现方面的研究呈现较大优势.针对具有多尺度决策的信息系统的知识获取问题,提出用证据理论研究具有多尺度决策的信息系统的最优尺度选择问题.首先介绍具有多尺度决策的信息系统及其尺度选择的概念,阐明尺度选择的全体构成一个格结构;其次,给出具有多尺度决策的信息系统在不同尺度选择下信息粒的表示及其相互关系;最后,定义协调的具有多尺度决策的信息系统的最优尺度选择概念,并用证据理论中的信任函数和似然函数刻画最优尺度选择的特征.
中图分类号:
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