关键词: 粗糙集 不确定性 知识含量测度 近似精度 粗糙度

Abstract: The measure of uncertainty is an important numerical characterization in rough sets theory. The measure of uncertainty proposed by Z. Pawlak has its limitations. Considering the causes of uncertainty in rough sets, we propose a new uncertainty measure by

Key words: Rough sets, Uncertainty, Knowledge capacity measure, Accuracy, Roughness