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Wyświetlanie 1-15 z 102
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:
Towards intelligent decision support for application service providing
Autorzy:
Sitek, P.
Wikarek, J.
Powiązania:
https://bibliotekanauki.pl/articles/118015.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
constraint programming
decision support
ASP
Opis:
Decision support systems (DSS) provide decision-makers with an interactive environment for analyses of information with various models to help solve unstructured and NP-hard problems. The important aspect of DSS is a technical and technological approach to the design and implementation of the above systems. A traditional approach to DSS engineering and implementation requires a great deal of effort for its maintenance. However, the enterprises would like to concentrate on its core competitiveness instead of non-core activities like IT maintenance. As a result of this, IT outsourcing has became a very popular event. Thus there is a growing need for intelligent decision support tools capable of assisting a decision maker in many problems in SMEs (Small and Medium Sized Enterprises). In this paper we present the use of declarative programming (constraint logic programming and relational SQL database) as an environment and framework for such decision support systems in an application service providing (ASP) model.
Źródło:
Applied Computer Science; 2007, 3, 1; 125-142
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of declarative framework for decision support system in scheduling problems
Autorzy:
Sitek, P.
Wikarek, J.
Powiązania:
https://bibliotekanauki.pl/articles/117767.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
constraint programming
decision support
scheduling
Opis:
Scheduling problems appear frequently at different levels of decisions. They are usually characterized by many types of constraints, which make them unstructured and difficult to solve (NP-complete). Traditional mathematical programming approaches are deficient because their representation of constraints is artificial (using 0-1 variables). Unlike traditional approaches, constraint logic programming (CLP) provides for a natural representation of heterogeneous constraints. In CLP we state the problem requirements by constraints; we do not need to specify how to meet these requirements. In this paper we propose a declarative framework for decision support system (DSS) for constrained search problems implemented by CLP and relational SQL database. We illustrate this concept by the implementation of a DSS for scheduling problems with external resources in different production organization environments.
Źródło:
Applied Computer Science; 2007, 3, 2; 69-86
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of modelling approaches for healthcare simulation
Autorzy:
Mielczarek, B.
Powiązania:
https://bibliotekanauki.pl/articles/406261.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
simulation
healthcare
decision support
management
Opis:
The goal of this paper is to present a summary of various simulation methods applied to health services and to discuss several internal and external determinants for selecting a particular simulation method to study a given managerial problem within the healthcare system. The analysis presented is based on a literature survey and considers four primary simulation techniques: Monte Carlo, discrete -event simulation, agent-based simulation and system dynamics. A range of internal and external factors are reviewed and characterised to determine the most suitable simulation technique for addressing a particular healthcare decision problem.
Źródło:
Operations Research and Decisions; 2016, 26, 1; 55-72
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Medical diagnosis support by the application of associational cognitive maps
Autorzy:
Froelich, W.
Wakulicz-Deja, A.
Powiązania:
https://bibliotekanauki.pl/articles/969801.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
medical diagnosis
decision support
cognitive maps
Opis:
The objective of the presented research is to construct a model of a patient's health that is based on the idea of cognitive map, a graphical knowledge-representation tool. The application of the proposed model for medical diagnosis is the practical goal of the research. Initially, we provide a brief review of the related works on medical decision support systems and cognitive maps. Afterwards, we sketch the general idea of the conceptual approach to the representation of medical knowledge and provide a new formulation of the medical diagnosis problem. Then, we define our model based on associational cognitive maps and show how it can be applied to diagnosis support. Due to the relative ease of understanding of cognitive map, the model can be easily interpreted and used, thereby making medical knowledge widely available through computer consultation systems. The application example presented is based on a relatively simple, real medical case.
Źródło:
Control and Cybernetics; 2010, 39, 2; 439-456
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The support of alternative project choice with using intelligence systems
Autorzy:
Relich, M.
Powiązania:
https://bibliotekanauki.pl/articles/117788.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
decision support
investment planning
fuzzy-neural system
Opis:
This paper aims to make an approach that supports the process of taking investment decision in case if the primary project cannot be completed. The factors, which occur in investment decision-making, often have an imprecise and uncertain form. In this case may be used a fuzzy neural system that supports the choice of alternative project by improvement in the estimates precision for requested resources. The paper contains an example with the using of different approaches in the estimation of time for project critical tasks that commit the substantial enterprise resources.
Źródło:
Applied Computer Science; 2010, 6, 2; 7-18
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Subjective Trust Management
Autorzy:
Majdan, M.
Powiązania:
https://bibliotekanauki.pl/articles/307980.pdf
Data publikacji:
2008
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
decision support
management concepts
multicriteria reputation model
Opis:
Trust and reputation management is gaining nowadays more attention then ever as online commodity exchange and other open virtual societies became a widespread reality. Most widely used computational models use reputation metrics as global property assigned to each party. More sophisticated models try to use reputation as subjective property. While introducing subjective reputation there arise a need to model preferences of agents. In this paper we propose to use weighted ordered weighted average (WOWA) operator to support the decision maker in assessing available evidence about other's party behavior. The WOWA aggregation is defined by two weighting vectors: the preferential weights assigned to the ordered quantities and the importance weights assigned to several attributes. It allows one to express both the preference regarding sources of information by the corresponding importance weights and the compensation between attribute values aggregated by the preferential weights.
Źródło:
Journal of Telecommunications and Information Technology; 2008, 4; 26-31
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bireference Procedure fBIP for Interactive Multicriteria Optimization with Fuzzy Coefficients
Autorzy:
Wojewnik, Piotr
Szapiro, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/483325.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
decision support
multicriteria decision making
interactive optimization
fuzzy optimization
Opis:
In the paper an approach to decision making in situations with non-pointlike characterisation and subjective evaluation of the actions is considered. The decision situation is represented mathematically as fuzzy multiobjective linear programming (fMOLP) model, where we apply the reduced fuzzy matrices instead of fuzzy classical numbers. The fMOLP model with reduced parameters is decomposable into the set of point-like models and the point-like models enable effective construction of an optimisation procedure - fBIP, see Wojewnik (2006ab), extending the bireference procedure by Michalowski and Szapiro (1992). The approach is applied to a fuzzy optimization problem in the area of telecommunication services.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2010, 2, 3; 169-193
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementations of interactive multicriteria decision support methods in conditions of risk
Autorzy:
Targiel, K. S.
Powiązania:
https://bibliotekanauki.pl/articles/406463.pdf
Data publikacji:
2012
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
decision support
multicriteria decision making
operations research software tools
Opis:
This paper presents programs which implement the tools for interactive methods of decision support under risk proposed by M. Nowak, as a complementary way to disseminate research results. It also presents a discussion of the appropriateness of implementing quantitative method tools in the form of add-ins to MS Excel.
Źródło:
Operations Research and Decisions; 2012, 22, 3; 55-62
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza dostępnych na statku informacji nawigacyjnych na podstawie m/s Nawigator XXI
Analysis of navigational data availability on the basis of m/s Nawigator XXI
Autorzy:
Wołejsza, P.
Szewczuk, T.
Powiązania:
https://bibliotekanauki.pl/articles/360267.pdf
Data publikacji:
2008
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
informacje nawigacyjne
wspomaganie decyzji
navigational data
decision support
Opis:
W celu poprawnego opracowania systemu wspomagania decyzji nawigatora należy na etapie projektowania określić informacje, na których podstawie decyzja będzie wypracowywana. Artykuł w pierwszej części prezentuje wymagania dotyczące obowiązkowego wyposażenia statków morskich w systemy i urządzenia nawigacyjne, a w drugiej - szczegółową analizę dostępnych informacji nawigacyjnych na przykładzie statku m/s Nawigator XXI.
In order to devise a navigator's decision support system correctly, information should be specified, on stage of projecting, on basis of which the decision shall be worked out. The article presents requirements concerning obligatory ship equipment in navigational systems and devices, and the second part presents the detailed analysis of accessible navigational information on example of the m/s Nawigator XXI.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2008, 13 (85); 115-119
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stochastic Models in Techno-Economic Analysis of Broadband Access Networks
Autorzy:
Olender, P.
Powiązania:
https://bibliotekanauki.pl/articles/309138.pdf
Data publikacji:
2010
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
broadband
decision support
FTTH
network planning
stochastic programming
Opis:
Development of networks, specially access networks, is very important and urgent task nowadays. However, it turns out that this segment of telecommunication networks is the most expensive and complicated part of this undertaking. Therefore, the thorough analyses are carried out to determine the best solution under specific circumstances before any decisions are made. This paper presents techno-economic model, which was implemented and used to carry out analyses for one of the biggest city in Poland. To take uncertainty into consideration the stochastic approach was applied providing more robust solution, therefore, improving the safety of investment. Analyses concern FTTH (fibre to the home) technology, type of generic FTTx network architecture. It uses optical fibre in local telecommunication loop, what is becoming more and more popular. Presented results show the usefulness of techno-economic surveys in planning access networks development. The appropriate choice of network parameters, such as the aggregation ratio, is essential and could significantly influence the investment profitability.
Źródło:
Journal of Telecommunications and Information Technology; 2010, 2; 43-51
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling and simulation of combat operations in SimCombCalculator application
Autorzy:
Nowicki, T.
Powiązania:
https://bibliotekanauki.pl/articles/308322.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
battlefield model
decision support
mathematical modelling
computer simulation
Opis:
The basis of the article is mathematical discrete problem connected with local military battle. The problem consists of two dependent problems. One of them shows how to find our troops allocation to enemy's troops. The battle damage assessment function for the problem is proposed. The second problem is connected with finding global strategy of attack. Local battle is described by modified Lanchester model. Two level logistic model is built for describing materials and munitions resupply management processes. This idea was used in computer simulator SimCombCalculator. The paper shows how to use this simulator for finding attack strategy from the platoon to brigade level.
Źródło:
Journal of Telecommunications and Information Technology; 2004, 4; 14-20
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
IT in the logistics of crisis situations: a review of selected systems and technologies
Autorzy:
Smal, T.
Wojaczek, A.
Powiązania:
https://bibliotekanauki.pl/articles/309722.pdf
Data publikacji:
2018
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
information systems
decision support
logistics in crisis situations
Opis:
IT systems are an indispensable element supporting logistics processes. Commercial organisations have been investing in this kind of tools for years, as they are absolutely necessary to ensure seamless operations in a reality where pressure on profits requires speed, effectiveness and high efficiency. This kind of solutions, along with all their advantages, can successfully be transferred and applied to decision-making in the logistics of crisis management. The first part of the article outlines and provides an analysis of available technologies and information systems that are (or can be) used in the area in question. Further, we formulate the requirements that a dedicated support system for the logistics of crisis situations must meet.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 12; 963-968
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Towards cognitive decision support: A model of behavioural assessment of multi-criteria methods
Autorzy:
Roszkowska, Ewa
Wachowicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2183430.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
decision support
behavioural decision analysis
preference analysis
AHP
SMART
TOPSIS
Opis:
The Negotiation Support Systems often implement multiple criteria decision aiding (MCDA) techniques for building a negotiation scoring system. Those formal models should meet the needs, motivations, expectations, and cognitive abilities of users. In this paper, we try to explore the effects of decision maker’s subjective perception of ease of use, time requirements, interface, preference representation, and efficiency of a particular MCDA method on the choice regarding the future use of this method. The multinomial logistic regression model is built and analysed. The analysis is based on data from online decision making experiments, where three MCDA methods were implemented, i.e. AHP, SMART, and TOPSIS. The study provides several interesting findings, concerning the behavioural aspects of multiple criteria decision aiding in software support systems. Most of the users recommended TOPSIS as the best one for supporting decisions in the future. This is a fast technique, for which we used an attractive graphical interface, suggesting that these factors play a crucial role in the users’ choices. However, the causative regression model showed that the user’s positive experience in using a particular method, i.e. its effectiveness in solving an exemplary numerical case, has the highest impact on the method’s choice for future use. The second most important factor is the adequacy in representing the user’s preferences by this method. We show, however, that the strengths of effects and their significance may vary across the methods. Understanding the decision maker’s evaluations of the MCDA techniques may help build a cognitive negotiation support system that satisfies the user’s expectations.
Źródło:
Control and Cybernetics; 2021, 50, 1; 145--168
0324-8569
Pojawia się w:
Control and Cybernetics
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
Wyświetlanie 1-15 z 102

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