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FCUBE FACTORY: A FUZZY OLAP SYSTEM FOR SUPPORTING IMPRECISION
 INTERNATIONAL JOURNAL OF UNCERTAINTY, FUZZINESS AND KNOWLEDGEBASED SYSTEMS
"... The special needs of the OLAP technology was the main cause of the use of a multidimensional view of the data. To model complex or nor well defined domains or to integrate data from semi/nonstructured sources (e.g. Internet) or with incompatibilities in their schemata is complicated using crisp mul ..."
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Cited by 5 (3 self)
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The special needs of the OLAP technology was the main cause of the use of a multidimensional view of the data. To model complex or nor well defined domains or to integrate data from semi/nonstructured sources (e.g. Internet) or with incompatibilities in their schemata is complicated using crisp multidimensional models. In these situations we need a model able to manage imprecision in the structures and data as a result of the modelling and/or integration. If we want to use expert’s knowledge in the analysis, we have to keep in mind that expert users are more comfortable when they use linguistic expressions instead of exact values. In this paper we present an extension of a fuzzy multidimensional model to support the use of linguistic labels in the definition of the
Fuzzifying P Systems
, 2003
"... Uncertainty is an inherent property of all living systems. Curiously enough, computational models inspired by biological systems do not take, in general, under consideration this essential aspect of living systems. In this paper, after introducing the notion of a multifuzzy set (i.e., multisets ..."
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Uncertainty is an inherent property of all living systems. Curiously enough, computational models inspired by biological systems do not take, in general, under consideration this essential aspect of living systems. In this paper, after introducing the notion of a multifuzzy set (i.e., multisets where objects are repeated to some degree), we introduce two variants of P systems with fuzzy components: P systems with fuzzy data and P systems with fuzzy multiset rewriting rules. By silently assuming that fuzzy data are not the result of some fuzzification process, P systems with fuzzy data are shown to be a step towards real hypercomputation.
Similarity Between Multivalued Thesaurus Attributes: Theory and Application in Multimedia Systems
 in Proceedings of the 16th International Conference on Database and Expert Systems
, 2006
"... Abstract. In this paper, the theoretical aspects of calculating the similarity between sets, and its generalizations multisets, fuzzy sets and fuzzy multisets, is presented. Afterwards, this theory is applied to enhance the facilities for accessing a multimedia system, namely when searching for corr ..."
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Abstract. In this paper, the theoretical aspects of calculating the similarity between sets, and its generalizations multisets, fuzzy sets and fuzzy multisets, is presented. Afterwards, this theory is applied to enhance the facilities for accessing a multimedia system, namely when searching for correspondence between multivalued attributes, which are coupled with a thesaurus. Furthermore, to allow flexibility in this search, thesauri with similarities defined between the thesaurus terms are considered. As a possible application, the DEKKMMA project is introduced, a project about an audio archive of African music. 1
Fuzzy Chemical Abstract Machines
, 2009
"... Fuzzy set theory opens new vistas in computability theory and here I show this by defining a new computational metaphor—the fuzzy chemical metaphor. This metaphor is an extension of the chemical metaphor. In particular, I introduce the idea of a state of a system as a solution of fuzzy molecules, th ..."
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Fuzzy set theory opens new vistas in computability theory and here I show this by defining a new computational metaphor—the fuzzy chemical metaphor. This metaphor is an extension of the chemical metaphor. In particular, I introduce the idea of a state of a system as a solution of fuzzy molecules, that is molecules that are not just different but rather similar, that react according to a set of fuzzy reaction rules. These notions become precise by introducing fuzzy labeled transition systems. Solutions of fuzzy molecules and fuzzy reaction rules are used to define the general notion of a fuzzy chemical abstract machine, which is a realization of the fuzzy chemical metaphor. Based on the idea that these machines can be used to describe the operational semantics of process calculi and algebras that include fuzziness as a fundamental property, I present a toy calculus that is a fuzzy equivalent of the πcalculus. 1
MULTIATTRIBUTE CLASSIFICATION OF CREDIT CARDHOLDERS: MULTISET APPROACH
"... Summary: The new model of constructing decisions for a credit card portfolio management is suggested. Cardholders are represented in the model as multiattribute objects with possibly contradictory values of quantitative and qualitative attributes. Decision rules for an evaluation of potential card ..."
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Summary: The new model of constructing decisions for a credit card portfolio management is suggested. Cardholders are represented in the model as multiattribute objects with possibly contradictory values of quantitative and qualitative attributes. Decision rules for an evaluation of potential cardholder credibility are based on classifying such multiattribute objects in the multiset metric space. 1.
Multiple criteria project selection based on contradictory sorting rules
 In (Goldevsky M., Mayr H. Eds.): Information Systems Technology and its Applications. Gesellschaft fur Informatik
, 2001
"... Abstract: This paper considers the techniques for selecting a collection of projects which are estimated by several experts with many qualitative criteria and sorted beforehand into some classes by diverse individual sorting rules. These tools are based on the theory of multiset metric spaces and a ..."
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Abstract: This paper considers the techniques for selecting a collection of projects which are estimated by several experts with many qualitative criteria and sorted beforehand into some classes by diverse individual sorting rules. These tools are based on the theory of multiset metric spaces and allow to generate classes of such objects and define a general classification rule which approximates the set of contradictory sorting rules.
Mathematics of Multisets Apostolos Syropoulos
 In Multiset Processing
, 2001
"... This paper is an attempt to summarize most things that are related to multiset theory. We begin by describing multisets and the operations between them. Then we present hybrid sets and their operations. We continue with a categorical approach to multisets. Next, we present fuzzy multisets and their ..."
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This paper is an attempt to summarize most things that are related to multiset theory. We begin by describing multisets and the operations between them. Then we present hybrid sets and their operations. We continue with a categorical approach to multisets. Next, we present fuzzy multisets and their operations. Finally, we present partially ordered multisets. 1
Multiple Criteria Ranking Enterprises Based on Inconsistent Estimations 1
"... Abstract: The paper considers a technique for ordering objects that are described with many quantitative and/or qualitative attributes and may exist in several copies. Such multiattribute objects may be represented as multisets or sets with repeating elements. Object ordering is based on the theory ..."
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Abstract: The paper considers a technique for ordering objects that are described with many quantitative and/or qualitative attributes and may exist in several copies. Such multiattribute objects may be represented as multisets or sets with repeating elements. Object ordering is based on the theory of multiset metric spaces and applied to ranking enterprises, which are estimated differently by several decision makers/experts under multiple criteria. 1
On Multiset Topologies
"... In this paper an attempt is made to extend the concept of topological spaces in the context of multisets (mset, for short). The paper begins with basic definitions and operations on msets. The mset space [X] w is the collection of msets whose elements are from X such that no element in the mset occu ..."
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In this paper an attempt is made to extend the concept of topological spaces in the context of multisets (mset, for short). The paper begins with basic definitions and operations on msets. The mset space [X] w is the collection of msets whose elements are from X such that no element in the mset occurs more than finite number (w) of times. Different types of collections of msets such as power msets, power whole msets and power full msets which are submsets of the mset space and operations under such collections are defined. The notion of Mtopological space and the concept of open msets are introduced. More precisely, an Mtopology is defined as a set of msets as points. Furthermore the notions of basis, sub basis, closed sets, closure and interior in topological spaces are extended to Mtopological spaces and many related theorems have been proved. The paper concludes with the definition of continuous mset functions and related properties, in particular the comparison of discrete topology and discrete Mtopology are established.