广义粗糙集 1. The existing researches on generalized rough sets are mainly concentrated on set approximations;less effort has been made for attribute reduction. 目前,人们对广义粗糙集的研究主要集中在集合的近似计算上,而真正利用广义粗糙集进行属性约简的研究还很少见。 更多例句>> 补充...
Moreover, entropy for evaluating uncertainty is defined on basis of the generalized fuzzy rough sets. Several properties of rough set theory which involve in fuzzy rough set are discussed. Computation of fuzzy lower and fuzzy upper approximations of a set (fuzzy rough set) is illustrated using a...
2) covering generalized rough set 覆盖广义粗糙集 1. LF-topological methods on the theory ofcovering generalized rough sets; 覆盖广义粗糙集理论中的LF拓扑方法 3) generalized fuzzy rough sets 广义模糊粗糙集 例句>> 4) roughness of a fuzzy set ...
To measure uncertainty in generalized fuzzy rough sets, a notion of fuzziness is introduced. Some basic properties of this measure are examined. For a special triangular norm $T = \\min$ , it is proved that the measure of fuzziness of a generalized fuzzy rough set is equal to zero if ...
This paper mainly studies the fuzzy composition expressions of the \( \bot \) -lower and ⊤-upper approximations and the approximation characteristics of generalized rough sets based on fuzzy composition operations.关键词: Fuzzy rough set Fuzzy composition operation bot {\rm and} \top)$ -general...
A new method for short-term load forecasting integrating fuzzy-rough sets with artificial neural network Short term load forecasting (STLF) has an essential role in the operation of electric power systems. In recent years, artificial neural networks (ANN) are ... ZY Wang,CX Guo,YJ Cao - In...
Fuzzy covering generalized rough sets 基于覆盖的模糊粗糙集模型 www.ilib.cn 5. Fault Diagnosis of Rotating Machinery Based on Generalized Rough Sets Theory 基于广义粗糙集理论的旋转机械故障诊断 ilib.cn 6. Rough Entropy Based on Generalized Rough Sets Covering Reduction 基于广义粗集覆盖约简的粗糙熵 ww...
Faced with some complex data sets, the “one step” information may be not feasible. Motivated by the notion of bisimulation in computer science, three types of bisimulation-based generalized fuzzy variable precision rough set (BGFVPRS) models are constructed. Different from many existed rough set...
Summary: In the present paper, we mainly discuss the $(\\perp,op)$-generalized fuzzy rough sets introduced by B. Q. Hu and Z. H. Huang with both constructive approach and axiomatic approach considered. In the former, we started from the investigation of the properties of the $\\perp$-...
Generalized interval-valued fuzzy approximation spacesThis paper presents a general study of generalized interval-valued fuzzy rough sets integrating the rough set theory with the interval-valued fuzzy set theory by constructive and axiomatic approaches. In the constructive approach, by employing an ...