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Rulegraphs check this compatibility between unary and binary rules by combining evidence theory with graph theory.


Formalisms such as probability theory and DempsterShafer evidence theory have proposed specific forms for these operators.


Both techniques rely on the mathematical tools of evidence theory, which are customized here for application to total uncertainty in track forecasts.


Application of evidence theory to quantify uncertainty in hurricane/typhoon track forecasts


This essay investigates this connection in detail, pointing to the usefulness of evidence theory to formalise and extend Shackle's decision theory.

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 This paper proposes a line detecting strategy with multi fault information fusion for single phase to ground faults in neutral insulated or Peterson coil grounded system. Concept of the fault measurement is introduced to quantitatively evaluate the probability of each line to be likely to the fault line. Thus the D S evidence theory is employed to process the fusion of multi information, which transforms the fault line detection with multi criteria to a evidence reasoning one and also focalizes... This paper proposes a line detecting strategy with multi fault information fusion for single phase to ground faults in neutral insulated or Peterson coil grounded system. Concept of the fault measurement is introduced to quantitatively evaluate the probability of each line to be likely to the fault line. Thus the D S evidence theory is employed to process the fusion of multi information, which transforms the fault line detection with multi criteria to a evidence reasoning one and also focalizes detecting results on a common ground of each criterion, and therefore improves the detecting performance greatly. Field practical results show that the fusion strategy proposed is feasible and correct. This work is supported by National Natural Science Foundation of China (No. 50177007) and Doctoral Foundation of Yanshan University.  提出了一种利用多重故障信息融合选线方法。为实现这一目的 ,提出了故障测度概念 ,用来定量评价各线路可能是故障线路的程度。运用D S证据理论实现了多判据信息融合 ,将多判据选线问题转化为证据推理问题 ,使选线结果聚焦到各个判据的共同支持点上 ,选线性能得到极大提高。现场实测故障算例证实了文中方法的正确性  A new approach based on the evidence theory of DempsterShafer is proposed to solve the problem of simultaneous fault. Simultaneous fault is introduced in the frame of discernment and two different combination rules are established according to the degree of conflict between evidences obtained. Finally, a case study pertaining to the fault diagnosis for rotor of generator 200MW is given and the results show the proposed diagnosis approach is feasible and efficient.  为了解决并发故障诊断问题 ,提出了一种基于推广的证据理论的新算法 :将并发故障状态作为设备的运行状态引入分辨框Θ中 ,使之成为分辨框Θ中的基本元素 ,依据诊断并发故障所获得的不同证据体的冲突程度 ,给出了两种不同组合规则 .以 2 0 0MW发电机转子故障诊断为例 ,验证了该算法的有效性  In order to fit the complex single phase to ground fault in neutral insulated or Peterson coil earthed power networks, this paper proposes an integrated fault detecting method with fusion of multi fault information. For flexible and reasonable fusion purpose, concept of fault measures is introduced to quantitatively evaluate the degree of each line tending to be the fault line. Fault measure algorithms for transient are established by means of wavelet analysis. Fault measure algorithms for magnitude and phase... In order to fit the complex single phase to ground fault in neutral insulated or Peterson coil earthed power networks, this paper proposes an integrated fault detecting method with fusion of multi fault information. For flexible and reasonable fusion purpose, concept of fault measures is introduced to quantitatively evaluate the degree of each line tending to be the fault line. Fault measure algorithms for transient are established by means of wavelet analysis. Fault measure algorithms for magnitude and phase angle of steady quantities are formulated as well. DS evidence theory is utilized to make the fusion of multi fault information. In this application, the product of relative basic probability assignment and a confirmable belief coefficient practicably formulate the basic probability assignment function. Multiinformation fusion by means of fault measures and DS evidence theory is capable of focalizing fault detection, and therefore improves the detecting performance greatly. Field results show that the fusion strategy exhibits excellent property over the existing criteria.  当故障特征量非常明显时,故障选线结果才比较可靠;当其特征量很微弱时,选线结果则可能是错误的。该文不仅提出了一种故障测度概念,以定量评价线路疑是故障线路的程度,还提出了一种多种利用故障信息的融合选线判据, 该判据基于故障测度概念并利用小波分析理论构造了暂态信息故障测度算法;对故障工频信息构造了幅值和相角故障测度算法;运用DS证据理论实现了多判据信息融合,将多判据选线问题转化为证据推理问题。结合选线问题的特点,将基本信度分配函数设计为相对信度分配函数与可确定信度系数之积形式。多故障信息的融合选线判据使选线性能得到提高,现场实测故障算例证实了文中方法的正确性。   << 更多相关文摘 
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