This paper first presents a necessary and sufficient condition for the meet of a solution to any solution to be a solution of fuzzy relational equations, then shows some conditions for the solution set to be a lattice.
ISBN:
(纸本)9789814324694
This paper first presents a necessary and sufficient condition for the meet of a solution to any solution to be a solution of fuzzy relational equations, then shows some conditions for the solution set to be a lattice.
It is an important factor of affecting consumer purchase for quality of living environment. Purchasers are faced with obscure circumstance of content boundaries when they are in the assessment of the living environmen...
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ISBN:
(纸本)9789814324694
It is an important factor of affecting consumer purchase for quality of living environment. Purchasers are faced with obscure circumstance of content boundaries when they are in the assessment of the living environment. This paper establishes an assessment model of the living environment based on fuzzy comprehensive evaluation method and a numerical example shows the application of this model.
Generating relevant and manageable search results is of great interest in web search and database queries nowadays. This paper proposes an extended representative information extraction approach based on fuzzy classif...
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ISBN:
(纸本)9789814324694
Generating relevant and manageable search results is of great interest in web search and database queries nowadays. This paper proposes an extended representative information extraction approach based on fuzzy classification, along with a fuzzy extension to the relation compactness measure in light of information entropy. The proposed approach enables to generate a small set of search/query results that could be used to effectively represent the original set of results.
One of the most challenging phenomena observed in ensembles of interacting agents is that of self-organisation. In the present study we demonstrate that distributed fuzzy decision making can be described by a simple m...
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ISBN:
(纸本)9789814324694
One of the most challenging phenomena observed in ensembles of interacting agents is that of self-organisation. In the present study we demonstrate that distributed fuzzy decision making can be described by a simple model system consisting of phase oscillators. As a case in point we discuss the emergent phase coherence of a multi-oscillator system with non-linear all-to-all coupling between the oscillators. In the thermodynamic limit this system shows spontaneous organisation. Simulations indicate that also for finite populations phase synchronization spontaneously emerges if the coupling strength is strong enough.
A method for the assesment and optimization of security level of composed Web services is proposed. During security evaluation a multi-layered approach which embraces different security aspects of modern service-orien...
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ISBN:
(纸本)9789814324694
A method for the assesment and optimization of security level of composed Web services is proposed. During security evaluation a multi-layered approach which embraces different security aspects of modern service-oriented architectures is being used. The information fusion model based on Subjective Logic formalism is used for generating opinion about overall security level of given service. The resulting asessments of Web services security are then used for the evaluation of complex service execution schemes.
Indecomposable extremely simple form (IESF) is a core concept of generalized literal about alpha-resolution principle in lattice-valued logic based on lattice implication algebra. In this paper, some operational laws ...
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ISBN:
(纸本)9789814324694
Indecomposable extremely simple form (IESF) is a core concept of generalized literal about alpha-resolution principle in lattice-valued logic based on lattice implication algebra. In this paper, some operational laws of the logical formulae in L(6)P(X) are given firstly, then the rules for judging whether a logical formula is 4-IESF and k-IESF or not are discussed, and the algorithm for finding all k-IESF's in L(6)P(X) is also given. Finally, the algorithm is used to get the structure of 4-IESF's in L(6)P(X).
For the operation of ships' avoiding tropical cyclone (TC), there are some problems for the TC warning areas given by observatories. The information of TC is incomplete, the probability of TC falling circle is not...
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ISBN:
(纸本)9789814324694
For the operation of ships' avoiding tropical cyclone (TC), there are some problems for the TC warning areas given by observatories. The information of TC is incomplete, the probability of TC falling circle is not big enough, and TC dangerous areas are uncertain because of the forecast errors of TC track. All the problems will be not good for safety decision-making of avoiding TC. Based on the statistical analysis of 1092 times 24h TC track forecasts made by China, Japan and the United States for 96 TC from 2001 to 2006, we got the relations between forecasting dispersions and average errors of TC forecasting positions. A method of determining TC dangerous areas based on multisource TC forecast is put forward. Fully considered the inaccuracy of TC track forecasts, the actual states of strong wind and huge waves around TC, and different forecasting results of TC track, the TC dangerous areas got using this method can be better for the scientifically decision-making of safety TC avoidance routing.
To improve the accuracy of recognition, we propose an approach to modify initial membership function in fuzzy k-nearest neighbors classifier (FKNN). The aim of the approach is that it will specify degree of the object...
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ISBN:
(纸本)9789814324694
To improve the accuracy of recognition, we propose an approach to modify initial membership function in fuzzy k-nearest neighbors classifier (FKNN). The aim of the approach is that it will specify degree of the object which belongs to each class. The modified function is based on the relationship between patterns in labeled sample set that can deal with some uncertain data. In addition, the combination of edited technique and the modified initial membership technique based on FKNN was used to deal with uncertain data.
Heterogeneous wireless sensor networks (WSNs) can effectively reduce the power consumption of data transfer. However, the fault-tolerant routing problem, especially routing recovery problem recently needs prompt solut...
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ISBN:
(纸本)9789814324694
Heterogeneous wireless sensor networks (WSNs) can effectively reduce the power consumption of data transfer. However, the fault-tolerant routing problem, especially routing recovery problem recently needs prompt solution. In order to maintain k-vertex disjoint communication paths from source sensors to the set of supernodes, we propose an immune cooperative particle swarm optimization algorithm (ICPSOA) to provide fast recovery from path failure in heterogeneous WSNs. Comparing with Directed Diffusion and EARQ protocols, the ICPSOA based protocol can obtain promising performance in the packet delivery ratio, energy depletion ratio and lifetime of heterogeneous WSNs.
The transmitter, logic solver and final element of safety instrumented system(SIS) are always composed of non-identical redundant components. How to calculate the loss of safety for safety instrumented system includin...
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ISBN:
(纸本)9789814324694
The transmitter, logic solver and final element of safety instrumented system(SIS) are always composed of non-identical redundant components. How to calculate the loss of safety for safety instrumented system including diverse redundancy was studied. Firstly, based on the loss of safety from different period, i.e. PFD, TIF and DTU, the models on loss of safety for SIS were set up. Secondly, The common cause failure became reduced because of the diverse redundancy. The common cause factor of diverse redundancy and the qualitative method on determining the diversity correction factor k were put forward. At last, The formulas for reliability of the applied safety instrumented system were given out. But how to accurately determine k needs to be farther studied.
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