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A GA-based fuzzy resource leveling optimization for helicopter maintenance activity 基于遗传算法的直升机维修活动模糊资源均衡优化
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.90
Malek Masmoudi, A. Haït
{"title":"A GA-based fuzzy resource leveling optimization for helicopter maintenance activity","authors":"Malek Masmoudi, A. Haït","doi":"10.2991/eusflat.2011.90","DOIUrl":"https://doi.org/10.2991/eusflat.2011.90","url":null,"abstract":"Genetic algorithm is one of the main heuristics that have been applied to scheduling problems in the last few decades. This paper presents a generalization of the genetic algorithm for solving project scheduling problem under time uncertainties within resource leveling technique. The generalization consists of handling fuzzy time parameter and fuzzy resource distribution instead of crisp ones. The provided fuzzy genetic algorithm is justified and applied to a real multi-project and multi-resources problem from the helicopter maintenance activity.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133658363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Filters in algebras of fuzzy logics 模糊逻辑代数中的滤波器
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.123
Martin Vita, P. Cintula
{"title":"Filters in algebras of fuzzy logics","authors":"Martin Vita, P. Cintula","doi":"10.2991/eusflat.2011.123","DOIUrl":"https://doi.org/10.2991/eusflat.2011.123","url":null,"abstract":"This paper presents a generalization of many particular results about special types of filters (e.g., (positive) implicative, fantastic) on algebras of nonclassical (mostly fuzzy) logics. Our approach is rooted in the framework of Abstract Algebraic Logic, and is based on the close connection between the filter-defining conditions and alternative axiomatizations of the logics involved. We identify four main kinds of theorems proved in the literature and we formulate general theorems which (provided a simple syntactical proof) yield the majority of published results as their direct consequences.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122204061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Estimating domains of attraction of fuzzy polynomial systems 模糊多项式系统的吸引域估计
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.35
J. L. Pitarch, C. Ariño, A. Sala
{"title":"Estimating domains of attraction of fuzzy polynomial systems","authors":"J. L. Pitarch, C. Ariño, A. Sala","doi":"10.2991/eusflat.2011.35","DOIUrl":"https://doi.org/10.2991/eusflat.2011.35","url":null,"abstract":"Most fuzzy control papers check LMI or SOS stability conditions in order to prove local stability results of nonlinear systems (Takagi-Sugeno fuzzy models or polynomial fuzzy models via Sector Nonlinearity approach). In case of having into account the shape of the membership functions in a particular region of interest, less conservative stability and stabilization conditions can be easily set up. In this paper local polynomial stability results are explored in order to obtain the largest basin of attraction for a particular system.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125036235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
CEVCLUS: Constrained evidential clustering of proximity data CEVCLUS:邻近数据的约束证据聚类
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.80
Violaine Antoine, B. Quost, M. Masson, T. Denoeux
{"title":"CEVCLUS: Constrained evidential clustering of proximity data","authors":"Violaine Antoine, B. Quost, M. Masson, T. Denoeux","doi":"10.2991/eusflat.2011.80","DOIUrl":"https://doi.org/10.2991/eusflat.2011.80","url":null,"abstract":"We present an improved relational clustering method integrating prior information. This new algorithm, entitled CEVCLUS, is based on two concepts: evidential clustering and constraint-based clustering. Evidential clustering uses the DempsterShafer theory to assign a mass function to each object. It provides a credal partition, which subsumes the notions of crisp, fuzzy and possibilistic partitions. Constraint-based clustering consists in taking advantage of prior information. Such background knowledge is integrated as an additional term in the cost function. Experiments conducted on synthetic and real data demonstrate the interest of the method, even for unbalanced datasets or non-spherical classes.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130238363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Ranking of fuzzy numbers based on alpha-distance 基于距离的模糊数排序
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.95
S. Khezerloo, T. Allahviranloo, M. Khezerloo
{"title":"Ranking of fuzzy numbers based on alpha-distance","authors":"S. Khezerloo, T. Allahviranloo, M. Khezerloo","doi":"10.2991/eusflat.2011.95","DOIUrl":"https://doi.org/10.2991/eusflat.2011.95","url":null,"abstract":"This paper presents a new approach to compare fuzzy numbers using α-distance. Initially, the metric distance on the interval numbers based on the convex hull of the endpoints is proposed and it is extended to fuzzy numbers. All the properties of the α-distance are proved in details. Finally, the ranking of fuzzy numbers by the α-distance is discussed. In addition, the proposed method is compared with some known ones, the validity of the new method is illustrated by applying its to several group of fuzzy numbers.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126570717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
The Type-1 OWA Operator and the Centroid of Type-2 Fuzzy Sets 一类OWA算子与二类模糊集的质心
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.138
F. Chiclana, Shang-Ming Zhou
{"title":"The Type-1 OWA Operator and the Centroid of Type-2 Fuzzy Sets","authors":"F. Chiclana, Shang-Ming Zhou","doi":"10.2991/eusflat.2011.138","DOIUrl":"https://doi.org/10.2991/eusflat.2011.138","url":null,"abstract":"This paper aims to establish the relationship between two apparent disparate problems: (i) the aggregation of uncertain information modelled by type-1 fuzzy sets via OWA mechanism, and (ii) the computation of the centroid of type-2 fuzzy sets. In order to cut down the computational complexity of the direct approach to performing type-1 OWA operation, the α-level approach to type-1 OWA operators was developed. This new approach is based on the decomposition of a type-1 OWA operator via its α-levels and the corresponding Representation Theorem of type-1 OWA operators. A close inspection of the mathematical representation of the centroid of type-2 fuzzy sets reveals that this is a special case of type-1 OWA operator. This relationship will allow for the computation of the centroid of a general type-2 fuzzy sets to be carried out via the application of the representation theorem to its equivalent type-1 OWA representation.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124033286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
On lattice structure and implications on ordered fuzzy numbers 格结构及其对有序模糊数的启示
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.156
M. Kacprzak, W. Kosinski
{"title":"On lattice structure and implications on ordered fuzzy numbers","authors":"M. Kacprzak, W. Kosinski","doi":"10.2991/eusflat.2011.156","DOIUrl":"https://doi.org/10.2991/eusflat.2011.156","url":null,"abstract":"Ordered fuzzy numbers (OFN) invented by the second author and his two coworkers in 2002 make possible to utilize the fuzzy arithmetic and to construct the Abelian group of fuzzy numbers and then an ordered ring. The definition of OFN uses the extension of the parametric representation of convex fuzzy numbers. Fuzzy implication is proposed with the help of algebraic operations and a lattice structure defined on OFN.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115542216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Multi-criteria Group Decision Supplier Selection Problem using Fuzzy TOPSIS Based Approch 基于模糊TOPSIS方法的多准则群决策供应商选择问题
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.139
A. Zouggari, L. Benyoucef
{"title":"Multi-criteria Group Decision Supplier Selection Problem using Fuzzy TOPSIS Based Approch","authors":"A. Zouggari, L. Benyoucef","doi":"10.2991/eusflat.2011.139","DOIUrl":"https://doi.org/10.2991/eusflat.2011.139","url":null,"abstract":"This paper presents a new decision making approach for group multi-criteria supplier selection problem, which clubs supplier selection process with order allocation for dynamic supply chains to cope market variations. More specifically, the developed approach imitates the knowledge acquisition and manipulation in a manner similar to the decision makers who have gathered considerable knowledge and expertise in procurement domain. Fuzzy-AHP method is used first for supplier selection through four classes (CLASS I: Performance strategy, CLASS II: Quality of service, CLASS III: Innovation and CLASS IV: Risk), which are qualitatively meaningful. Thereafter, using simulation based fuzzy TOPSIS method, the criteria application is quantitatively evaluated for order allocation among the selected suppliers. As a result, the approach generates decision-making knowledge, and thereafter, the developed combination of rules for order allocation can easily be interpreted, adopted and at the same time if necessary, modified by decision makers. To demonstrate the applicability of the proposed approach, an illustrative example is presented and the results analyzed.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132372500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Riesz MV-algebras and their logic Riesz mv -代数及其逻辑
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.125
A. Nola, I. Leustean
{"title":"Riesz MV-algebras and their logic","authors":"A. Nola, I. Leustean","doi":"10.2991/eusflat.2011.125","DOIUrl":"https://doi.org/10.2991/eusflat.2011.125","url":null,"abstract":"We develop the general theory of RMV-algebras, which are essentially unit intervals in Riesz spaces with strong unit. Since the variety of RMV-algebras is generated by [0, 1], we get an equational characterization of the real product on [0,1] interpreted as scalar multiplication.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"111 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132193769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Functionally Expressible Multidistances 函数可表达的多距离
EUSFLAT Conf. Pub Date : 2011-08-06 DOI: 10.2991/eusflat.2011.24
Javier Martín, G. Mayor, Ó. Valero
{"title":"Functionally Expressible Multidistances","authors":"Javier Martín, G. Mayor, Ó. Valero","doi":"10.2991/eusflat.2011.24","DOIUrl":"https://doi.org/10.2991/eusflat.2011.24","url":null,"abstract":"In this paper we deal with the problem of aggregating pairwise distance values in order to obtain a multi-argument distance function. After introducing the concept of functionally expressible multidistance, several essential types of multidimensional aggregation functions are considered to construct such kind of multidistances. An example of non functionally expressible multidistance is exhibited.","PeriodicalId":403191,"journal":{"name":"EUSFLAT Conf.","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128704647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
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