Search results for "fuzzy"
showing 10 items of 747 documents
Traffic management and user perception: an analysis of Variable Message Signs using Fuzzy Logic
2009
Variable message signs have today become an indispensable tool for managing traffic in urban and suburban areas, such as sending real-time information to motorists in transit along roads where panels are positioned. The study draws on drivers’ response to a series of interviews conducted in the city of Brescia. The interviews showed that a large proportion of drivers does not read the messages, and indeed very often does not even remember having seeing the sign. The marginal usefulness of these facilities can probably be attributed to the fact that the panels are constantly used to display messages devoid of immediate interest (eg, greetings, penalties for traffic violations, general inform…
Fuzzy dynamic sliding mode control design for high order disturbed systems
2013
In this paper, the problem of fuzzy dynamic sliding mode control design is investigated for a class of disturbed systems. Specifically, the fuzzy controller is constructed based on one feedback signal to estimate the unknown nonlinear terms and to develop the sliding mode control according to the fuzzy rules. Furthermore, it possesses the characteristic of simplicity in design and effectiveness in attenuating chattering. Finally, a numerical example is included to demonstrate the effectiveness and advantage of the proposed method.
Aggregation of fuzzy structures based on equivalence relations
2016
Elektroniskā versija nesatur pielikumus
A General Fuzzy-Parsing Scheme for Speech Recognition
1985
In this paper a Speech Recognition Methodology is proposed which is based on the general assumption of ‘fuzzyness’ of both speech-data and knowledge-sources. Besides this general principle, there are other fundamental assumptions which are also the bases of the proposed methodology: ‘Modularity’ in the knowledge organization, ‘Homogeneity’ in the representation of data and knowledge, ‘Passiveness’ of the ‘understanding flow’ (no backtraking or feedback), and ‘Parallelism’ in the recognition activity.
A multi-objective approach to solid waste management
2010
The issue addressed in this paper consists in the localization and dimensioning of transfer stations, which constitute a necessary intermediate level in the logistic chain of the solid waste stream, from municipalities to the incinerator. Contextually, the determination of the number and type of vehicles involved is carried out in an integrated optimization approach. The model considers both initial investment and operative costs related to transportation and transfer stations. Two conflicting objectives are evaluated, the minimization of total cost and the minimization of environmental impact, measured by pollution. The design of the integrated waste management system is hence approached i…
A thread through challenging questions
2015
In the pages which follow I shall try to present a network relating some challenging different problems and questions; questions and problems which in different forms have been discussed with Enric along the years. The thread, of course, is constructed by me and now, and is based on my memory, choices and preferences. For these reasons I am not sure that Enric will totally agree with the particular way in which I have intertwined the different elements composing the thread as well as the pieces it connects. However I presume that this thread - also in the specific subjective form as it appears - will show, anyway, some elements of Enric’s activity and the way in which we have interacted alo…
A New Universal-Environment Adaptive Multi-processor Scheduler for Autonomous Cyber-Physical System
2012
International audience; Robot, spaceship and other applications that can be called autonomous Cyber-Physical Systems (CPS) are all smart embedded systems, which usually run in open environment by themselves with inhered intelligent capabilities. Besides the application intelligence, the researches of adaptive platform for such systems have also become topics recently. Based on the analysis of current work, a new environment adaptive scheduler (¦Á-S) for multiprocessor platform of a cyber-physical system is proposed in this article. And then, its related structures, models, and reasoning methods are studied deeply. Different from the existing ones, ¦Á-S can schedule all tasks according to th…
De la théorie des sous-ensembles flous aux probabilités non-additives : 36 remarques
1992
Depuis l’article initial "Fuzzy Sets", de L.A. Zadeh, en 1965, dans Information and Control, nombreux et variés furent les domaines d’application de la théorie des sous-ensembles flous ( linguistique, intelligence artificielle, biologie.. ). En ce qui concerne la science économique, l’influence de cette nouvelle théorie mathématique - dont on devrait dire qu’elle constitue essentiellement une généralisation au sens d’une "théorie générale” qui acceptecomme cas limite l’approche standard - s’est uniformément répartie par delà les domaines traditionnels de l’analyse micro-économique2 : théorie des préférences, agrégation des préférences, théorie des jeux, théorie de la valeur, recherche opéra…
How to Enrich Description Logics with Fuzziness
2017
International audience; The paper describes the relation between fuzzy and non-fuzzy description logics. It gives an overview about current research in these areas and describes the difference between tasks for description logics and fuzzy logics. The paper also deals with the transformation properties of description logics to fuzzy logics and backwards. While the process of transformation from a description logic to a fuzzy logic is a trivial inclusion, the other way of reducing information from fuzzy logic to description logic is a difficult task, that will be topic of future work.
Multi-Kernel Implicit Curve Evolution for Selected Texture Regions Segmentation in VHR Satellite Images
2014
Very high resolution (VHR) satellite images provide a mass of detailed information which can be used for urban planning, mapping, security issues, or environmental monitoring. Nevertheless, the processing of this kind of image is timeconsuming, and extracting the needed information from among the huge quantity of data is a real challenge. For some applications such as natural disaster prevention and monitoring (typhoon, flood, bushfire, etc.), the use of fast and effective processing methods is demanded. Furthermore, such methods should be selective in order to extract only the information required to allow an efficient interpretation. For this purpose, we propose a texture region segmentat…