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    Wyświetlanie 1-5 z 5
    Tytuł:
    Constraint-based scheduling in Oz/Mozart
    Autorzy:
    Sitek, P.
    Wikarek, J.
    Banaszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/118013.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    constraint programming
    decision support
    scheduling
    Opis:
    In this paper we present how scheduling problems can be solved in the concurrent constraint programming (CCP) language Oz. Oz is the first high- level constraint language, which offers programmable search, modularity, expressiveness and an interface to invent new constraints using C++. As an example of scheduling problem the job-shop scheduling problem with manpower resources representation was considered. The objective discussed here is the minimization of the makespan. Allocating manpower to the jobs is more complicated than allocating machines, as different jobs and operations require different manpower. This problem is strongly NP-hard. We proposed the constraint programming (CP) based approach to decision support in this environment. The most important features of CP are declarative problem modeling, allowing a clear separation between the problem statement (variables and constraints) and the resolution of the problem.
    Źródło:
    Applied Computer Science; 2006, 2, 1; 83-99
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decision support tool for projects portfolio prototyping
    Autorzy:
    Bocewicz, G.
    Bach, I.
    Banaszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/117707.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    scheduling
    constraint programming
    decision support system
    Opis:
    Constraint Programming (CP) is an emergent software technology for declarative description and effective solving of large combinatorial problems especially in the area of projects portfolio prototyping. The paper deals with multi-resource and multi-criteria problem in which more than one shared renewable resource type may be required by manufacturing operation and the availability of each type is time-windows limited. The problem belongs to a class of NP-complete ones. The aim of the paper is to present a knowledge based and CP-driven approach to resource allocation conflicts resolution framework. Proposed framework stands behind a methodology aimed at task oriented DSS tolls designing. The Portfolio Project Prototyping System designed due to this methodology provides a prompt and interactive service to a set of routine queries stated both in straight and reverse way. Multiple illustrative examples are discussed.
    Źródło:
    Applied Computer Science; 2008, 4, 2; 43-62
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Towards dedicated decision support tools: CLP-based approach
    Autorzy:
    Banaszak, Z.
    Józefczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/118061.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    decision support
    constraint logic programming
    production planning
    modeling
    scheduling
    Opis:
    Constraint programming (CP) is an emergent software technology for declarative description and effective solving of large combinatorial problems especially in areas of integrated production planning. In that context, the CP can be considered as a well-suited framework for development of decision making software supporting small and medium size enterprises in the course of Production Process Planning (PPP). The problem considered regards of finding of computationally effective approach aimed at scheduling of a new project subject to constraints imposed by a multi–project environment. In other words, we are looking for an answer whether a given production order specified by its cost and completion time can be accepted in a given manufacturing system specified by available production capability, i.e., the time-constrained resources availability. The problem belongs to a class of multi-mode case project scheduling problems, where the problem of finding a feasible solution is NPcomplete. The aim of the paper is to present the CP modeling framework as well as to illustrate its application to decision making in the case of a new production order evaluation. So, the contribution emphasizes benefits derived from CPbased DSS and focuses on constraint satisfaction driven decision-making rather than on an optimal solution searching.
    Źródło:
    Applied Computer Science; 2005, 1, 1; 161-180
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Towards CLP-based task-oriented DSS for SME
    Autorzy:
    Tomczuk, I.
    Bzdyra, K.
    Banaszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/118215.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    decision support
    constraint logic programming
    production planning
    modelling
    scheduling
    Opis:
    Decision making supported by task-oriented software tools plays a pivotal role in a modern enterprises. That is because commercially available ERP systems are not able to respond in an interactive on-line/real-time mode. It means a new generation of DSS that enable a fast prototyping of production flows in multiproject environment as well as an integrated approach to a layout planning, production routing, batch-sizing and scheduling problems is needed. In that context, the constraint logic programming techniques allowing declarative representation of a decision making problem provide a quite attractive alternative. So, some issues regarding modelling of decision making and searching strategies development are discussed in the contribution. The results obtained are implemented in a software package supporting production flow planning in the SMEs. Illustrative example of the ILOG-based software application is provided.
    Źródło:
    Applied Computer Science; 2005, 1, 1; 181-200
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Risk assessement in multi-project environment
    Autorzy:
    Tomczuk-Piróg, I.
    Banaszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/118295.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    constraint logic programming
    constraint satisfaction problem (CSP)
    decision support system
    knowledge engineering
    projects management
    multi-project environment
    Opis:
    Decision making supported by task-oriented software tools plays a pivotal role in a modern enterprise. That is because commercially available ERP systems are not able to respond in an interactive on-line/real-time mode. It opens a new generation of DSS that enable a fast prototyping of production flows in multi-project environment as well as an integrated approach to project execution evaluation. In that context our goal is to provide a knowledge base approach allowing one to be independent on a context or representation of particular data as well as allowing designing an interactive and task-oriented decision support system (DSS). The assumed knowledge base mode of specifying a production system leads to solving a logic-algebraic method (LAM) decision problem. The approach proposed complements the decision system with an additional module (evaluation module) and facilitates searching for possible solutions meeting company production programme execution evaluation criteria. The results obtained are implemented in a software package supporting project management in the SMEs. Illustrative example of the ILOG-based software application is provided.
    Źródło:
    Applied Computer Science; 2007, 3, 1; 73-93
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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