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The collection and combination of assessment data in trustworthiness evaluation of cloud service is challenging , notably because QoS value may be missing in offline evaluation situation due to the time-consuming and costly cloud service invocation. Considering the fact that many trustworthiness evaluation problems require not only objective measurement but(More)
The penalty function is one of the most commonly used approaches for constrained optimization problems. However, it often leads to additional parameters and the parameters are not easy for the users to select. A new way without additional parameters to deal the constrained optimizations was proposed. Firstly, a new penalty function was defined using the(More)
Dempster-Shafer theory of evidence is used to quantify uncertainty in terms of the uncertain measures of belief and plausibility. It can better handle the synthesis of fuzzy and uncertain information. So it can deal with the different experts' opinions as evidence and integrate them to make decision for the decision-makers in group decision-making. But when(More)
With the rapid development of both information technology and the management of modern medical regulation, the generation of medical records tends to be increasingly intelligent. In this paper, Case-Based Reasoning is applied to the process of generating records of dental cases. Based on the analysis of the features of dental records, a case base is(More)
The methods for determining OWA operator weights have aroused wide attention. We first review the main existing methods for determining OWA operator weights. We next introduce the principle of maximum entropy for setting up probability distributions on the basis of partial knowledge and prove that Xu's normal distribution-based method obeys the principle of(More)
Cheng's paper (1998) proposed the method for ranking of fuzzy numbers by distance index (R<sub>0</sub>) and CV index based on the calculation of centroid point (xmacr<sub>0</sub>, ymacr<sub>0</sub>). But, CV index may be inconsistent with distance index R<sub>0</sub> in some circumstances. This paper proposes ranking of fuzzy numbers by distance index(More)