Great achievement have been obtained in the research on the truth degrees of formulae in propositional logic, but now the investigation on the truth degrees of formulae in predicate logic is very lack. Based on this s...
详细信息
ISBN:
(纸本)9789814417730
Great achievement have been obtained in the research on the truth degrees of formulae in propositional logic, but now the investigation on the truth degrees of formulae in predicate logic is very lack. Based on this situation, the n-truth degrees of formulae in two-valued predicate logic is proposed in this paper, and some important properties are studied. This paper enriches the content of the theory of quantitative logic, and provides a kind of framework for further approximate reasoning.
In this study a priority weight generation method on the intuitionistic fuzzy preference relations is proposed. The method consists of two linear programming models which are generalized to the case of group decision ...
详细信息
ISBN:
(纸本)9789814417730
In this study a priority weight generation method on the intuitionistic fuzzy preference relations is proposed. The method consists of two linear programming models which are generalized to the case of group decision making with the weight information defined by each DM. In the models, the collective preference relations are obtained by using the intuitionistic fuzzy weighted geometric averaging operator and additive consistency is considered. Finally, a numerical example is give to verify the validity and applicability of the models.
When designing controllers for complex systems, it is not only necessary to control the system but to improve the robustness in order to get a better response. Some indexes allow to measure the performance of the cont...
详细信息
ISBN:
(纸本)9789814417730
When designing controllers for complex systems, it is not only necessary to control the system but to improve the robustness in order to get a better response. Some indexes allow to measure the performance of the controller, such as the gain and phase margins of the system response. In this paper a computational tool based on genetic algorithms is designed and implemented in order to optimize the robustness of a controller. So it is possible to analyze how the variation of the controller parameters influences the robustness of the system. The tool is applied to the optimization of a LQ controller for a MIMO autonomous vehicle.
A kind of intuitionistic fuzzy logic system LP(S) based on linguistic truth-valued intuitionistic fuzzy algebra is proposed in this paper. The linguistic truth-valued intuitionisitic fuzzy algebra comes from the lingu...
详细信息
ISBN:
(纸本)9789814417730
A kind of intuitionistic fuzzy logic system LP(S) based on linguistic truth-valued intuitionistic fuzzy algebra is proposed in this paper. The linguistic truth-valued intuitionisitic fuzzy algebra comes from the linguistic truth-valued implication algebra which is fit to express both comparable and incomparable information. The method can deal with the uncertain problem which has both positive evidence and negative evidence at the same time. Some axioms and reasoning rules of linguistic truth-valued intuitionistic fuzzy propositional logic are discussed. The proofs and theorems are also obtained.
In this paper, a new method is presented to deal with fuzzy multiple-attribute group decision-making problems based on weights vector of decision makers. In this paper all evaluations that are given by decision makers...
详细信息
ISBN:
(纸本)9789814417730
In this paper, a new method is presented to deal with fuzzy multiple-attribute group decision-making problems based on weights vector of decision makers. In this paper all evaluations that are given by decision makers are interval type-2 fuzzy trapezoidal numbers, since type-2 fuzzy sets involve more uncertainties than type-1 fuzzy sets. We also use a numerical example for location selection problem to utilize the proposed method.
This work presents a developed novel optimization process that can be used for the synthesis of mechanical components and systems. One sample application to the design optimization of space frames is presented in deta...
详细信息
ISBN:
(纸本)9789814417730
This work presents a developed novel optimization process that can be used for the synthesis of mechanical components and systems. One sample application to the design optimization of space frames is presented in detail. Several other applications are also indicated. The main objective in the sample application is to minimize the space frame volume and satisfy stress constraints. The optimization effectively uses the devised Heuristic Gradient Projection (HGP) technique to synthesize the optimum design of the Midi-Bus frame. Results indicate a striking improvement over available designs and remarkably faster convergence over other design and optimization techniques. The technique can moreover be effectively applied to other large 3D-space frame synthesis and optimization. The developed synthesis methodology is also applied to other designs as a tailored optimization paradigm for a better theory of design realization.
The assumption in DEA is that all inputs and outputs are definite, but in real situation, this assumption is not true. In this study, we suggest a model with fuzzy data called the fuzzy generalized DEA (FGDEA) model, ...
详细信息
ISBN:
(纸本)9789814417730
The assumption in DEA is that all inputs and outputs are definite, but in real situation, this assumption is not true. In this study, we suggest a model with fuzzy data called the fuzzy generalized DEA (FGDEA) model, which can treat the stated basic DEA models with fuzzy data in a unified way. In addition, we linearize this model. And finally with a numerical example we evaluate DMUs with fuzzy data by the fuzzy DEA model and the FGDEA model and compare the results of two models.
This book contains a selection of the papers presented at the XVII SIGEF Congress. It presents fuzzy logic, neural networks and other intelligent techniques applied to economic and business problems. This book is very...
详细信息
ISBN:
(数字)9789814415774
ISBN:
(纸本)9789814415767
This book contains a selection of the papers presented at the XVII SIGEF Congress. It presents fuzzy logic, neural networks and other intelligent techniques applied to economic and business problems. This book is very useful for researchers and graduate students aiming to introduce themselves to the field of quantitative techniques for overcoming uncertain environments. The contributors are experienced scholars of different countries who offer real world applications of these mathematical techniques.
We propose a new method for ranking alternatives in multicriteria decision-making problems when there is imprecision concerning the alternative performances, component utility functions and weights. We assume decision...
详细信息
ISBN:
(纸本)9789814417730
We propose a new method for ranking alternatives in multicriteria decision-making problems when there is imprecision concerning the alternative performances, component utility functions and weights. We assume decision maker's preferences are represented by an additive multiattribute utility function, in which weights can be modeled by independent normal variables, fuzzy numbers, value intervals or by an ordinal relation. The approaches are based on dominance measures or exploring the weight space in order to describe which ratings would make each alternative the preferred one. On the one hand, the approaches based on dominance measures compute the minimum utility difference among pairs of alternatives. Then, they compute a measure by which to rank the alternatives. On the other hand, the approaches based on exploring the weight space compute confidence factors describing the reliability of the analysis. These methods are compared using Monte Carlo simulation.
Geolocation applications and software are one of the fields where the configuration of the tools is a very complex task. An interesting challenge is to try to automatize it in proposing natural language interfaces abl...
详细信息
ISBN:
(纸本)9789814417730
Geolocation applications and software are one of the fields where the configuration of the tools is a very complex task. An interesting challenge is to try to automatize it in proposing natural language interfaces able to interact and configure the low-level devices. This paper shows how such interfaces and fuzzy models can be mixed to facilitate the elicitation of business-level objectives in the geolocation context. Two 2-tuple linguistic representation models are considered and compared in a simple use case.
暂无评论