OPTIONAL AND PREDICTABLE PROJECTIONS OF SET-VALUED MEASURABLE PROCESSES

In this paper,the optional and predictable projections of set-valued measurable processes are studied.The existence and uniqueness of optional and predictable projections of set-valued measurable processes are proved under proper circumstances.

Attribute Reduction in Interval and Set-Valued Decision Information Systems

In many practical situation, some of the attribute values for an object may be interval and set-valued. This paper introduces the interval and set-valued information systems and decision systems. According to the semantic relation of attribute values, interval and set-valued information systems can be classified into two categories: disjunctive (Type 1) and conjunctive (Type 2) systems. In this paper, we mainly focus on semantic interpretation of Type 1. Then, we define a new fuzzy preference relation and construct a fuzzy rough set model for interval and set-valued information systems. Moreover, based on the new fuzzy preference relation, the concepts of the significance measure of condition attributes and the relative significance measure of condition attributes are given in interval and set-valued decision information systems by the introduction of fuzzy positive region and the dependency degree. And on this basis, a heuristic algorithm for calculating fuzzy positive region reduction in interval and set-valued decision information systems is given. Finally, we give an illustrative example to substantiate the theoretical arguments. The results will help us to gain much more insights into the meaning of fuzzy rough set theory. Furthermore, it has provided a new perspective to study the attribute reduction problem in decision systems.

Set-Valued Stochastic Integrals with Respect to Finite Variation Processes

In a Euclidean space Rd, the Lebesgue-Stieltjes integral of set-valued stochastic processes with respect to real valued finite variation process is defined directly by employing all integrably bounded selections instead of taking the decomposable closure appearing in some existed references. We shall show that this kind of integral is measurable, continuous in t under the Hausdorff metric and L2-bounded.

A survey of ergodicity on the set-valued mappings

In this paper, we give a survey on the PhD thesis of the first author. There theexistence and ergodicity on invariant measures of set-valued mappings are discused.

基于Sugeno测度的动态不可加双矢量量化说话人识别研究

针对双矢量量化方法中语音的静态特征和动态特征的权重不满足可加性的情况,提出了一种新的说话人识别方法——基于Sugeno测度的动态不可加双矢量量化说话人识别方法。该方法在Sugeno测度空间上将说话人语音的静态特征和动态特征用Sugeno测度进行动态融合。然后,在噪声环境下研究了该方法的识别效果,找到了噪声环境下语音的静态特征和动态特征参数的较优的权重组合。实验结果表明,与双矢量量化识别方法相比,该方法可以使识别率明显提高。该方法为研究各类语音特征参数之间的关系、探寻最优的特征匹配方案提供了一种新的途径。

Nonadditive Set Functions Defined by Aumann Fuzzy Integrals

A novel concept, called nonadditive set-valued measure, is first defined as a monotone and continuous set function. Then the interconnections between nonadditive set-valued measure and the additive set-valued measure as well as the fuzzy measure are discussed. Finally, an approach to construct a nonadditive compact set-valued measure is presented via Aumann fuzzy integral.

基于非可加测度的一致性变异测度

建立在经典概率测度理论体系下的风险测度理论已经有了不少的研究成果,但在金融、保险市场中存在着许多的非可加风险,针对传统风险测度理论分析非可加风险的缺陷,研究了在Choquet积分理论基础上的风险变量空间为非可加测度空间的变异测度问题,证明了这种测度是共单调可加一致性的变异测度,给出了在Chance空间共单调可加一致性变异测度的表示定理,这些结论是对风险变异测度理论在非可加条件下的发展,对于分析非可加风险具有重要的理论价值与现实意义。

基于Sugeno积分形式的犹豫模糊多属性决策方法

给出在犹豫模糊不确定决策信息背景下,属性间相互关联、相互作用时的多属性决策方法.通过定义基于Sugeno积分形式的犹豫模糊算子,讨论并证明其幂等性、单调性、有界性和可交换性等集成性质;给出基于Sugeno积分形式的犹豫模糊多属性决策方法,并实例验证在多属性决策实际问题中的应用.

基于Choquet积分的Carlson不等式

在被积函数f,g满足共同单调的条件下证明了基于Choquet积分的Carlson不等式.当所涉及的集函数μ为Lebesgue测度且g(x)=x时,得到了一个与经典Carlson不等式类似的结论,且系数有所改进,因此其结论在某种意义上推广了经典的Carlson不等式.