Examinando por Materia "Constraint satisfaction problems"
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Ítem Experts' Agreement Support for Distributed Engineering Knowledge Modelling(Springer Verlag, 2013-01-01) Mejía-Gutiérrez, R.; Cálad-Álvarez, A.; Zuluaga-Holguín, D.Knowledge sharing among partners in collaborative and concurrent engineering processes is becoming more critical for decision-making in Product Design Engineering (PDE). The approach presented in this article proposes a Fuzzy Logic (FL) based semi-automatic support for reaching agreements in the definition of variable's domain under a Constraint Satisfaction Problem (CSP) modelling process. A negotiation model is proposed, including suggestions about preferred domains for a variable that it is used for more than one expert. Competence of the users involved in the negotiation is measured with a set of developed indexes. A Fuzzy Inference System (FIS) is used to calculate user's indexes and suggestions about the domain are made based on the proposed domains and competence index of the experts. The proposal is included in a Multi-Agent System (MAS) for supporting distributed knowledge modelling. © Springer-Verlag Berlin Heidelberg 2013.Ítem A fuzzy negotiation model to assign variable's domain in constraint satisfaction problems: An agent based collaborative engineering modeling case(IOS PRESS, 2012-01-01) Mejía-Gutiérrez, R.; Cálad-Álvarez, A.; Zuluaga-Holguín, D.; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)Knowledge sharing among partners from a distributed engineering team is becoming more critical for decision making. The work presented in this article proposes to support users of an agent based application for collaborative product design, during the definition of an engineering problem under a Constraint Satisfaction Problem (CSP) approach. The scope of this work covers the domains definition for variables from the CSP distributed model. A semiautomatic negotiation model is proposed in order to give users suggestions about a preferred domain for a variable that is used for more than one expert. A set of quantitative indexes measure the competence that users have over variables in the model, helping the system in decision making. A fuzzy inference system is used to calculate user's competence index and suggestions are made based on a fuzzy approach in order to achieve trade-offs in collaborative domains definition. © 2012 The authors and IOS Press. All rights reserved.Ítem Gelisp: A framework to represent musical constraint satisfaction problems and search strategies(Asian Research Publishing Network, 2016-01-01) Toro, M.; Rueda, C.; Agón, C.; Assayag, G.; Toro, M.; Rueda, C.; Agón, C.; Assayag, G.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las ComunicacionesIn this article we present Gelisp, a new library to represent musical Constraint Satisfaction Problems and search strategies intuitively. Gelisp has two interfaces, a command-line one for Common Lisp and a graphical one for OpenMusic. Using Gelisp, we solved a problem of automatic music generation proposed by composer Michael Jarrell and we found solutions for the All-interval series. © 2005 - 2016 JATIT & LLS. All rights reserved.Ítem A multi-agent approach for engineering design knowledge modelling(SPRINGER, 2011-01-01) Mejía-Gutiérrez, R.; Cálad-Álvarez, A.; Ruiz-Arenas, S.Usually a product design process implies collaborative work between experts located in different geographical locations. This context makes the process of taking design decisions more difficult and slow. Nowadays, definition of variables and constraints is a key issue, that experts related with product design have to face throughout the product lifecycle. A Multi-Agent system is proposed for tutoring experts in a standardized manner for the definition of variables and constraints. This domain specific knowledge will be use to build "Constraint Satisfaction Problem" models to support early stages of product design, specifically embodiment design. © 2011 Springer-Verlag.Ítem Smart experience engineering to support collaborative design problems based on constraints modelling(IOS PRESS, 2014-01-01) Cálad-Álvarez, A.; Mejía-Gutiérrez, R.; Sanín, C.M.; Szczerbicki, E.Engineering design is a knowledge intensive process. Experts' experiences from different product life-cycle stages play a key role in problem solving during design decision making by linking up knowledge to find better solutions for a specific design problem. Different approaches have been used to support Collaborative and Concurrent Product Design, such as Constraint Satisfaction Problem (CSP) modelling. Additionally, due to the need of capitalizing these experiences, the Set of Experience Knowledge Structure (SOEKS) is used to store and manage experiences of decision making process. However it was necessary to adapt the structure to property manage the constraints approach used in Engineering Design. This article presents a proposed adaptation to SOEKS structure in order to be able to store and reuse CSP design experiences for further re-use and analysis of multiple experiences. Finally, a case study is presented in order to show how the proposed approach can be used in the industrial applications. © 2014-IOS Press and the authors. All rights reserved.