Temat: heuristic - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Raport Badawczy = Research Report ; RB/19/2004
Application of Artificial Intelligence Based Heuristic Algorithms for Solving the Task Scheduling Problem
Autorzy:: Józefczyk, Jerzy
Wydawca:: Instytut Badań Systemowych. Polska Akademia Nauk
Systems Research Institute. Polish Academy of Sciences
Powiązania:: Raport Badawczy = Research Report
Opis:: Bibliografia s. 15-16
Bibliography p. 15-16
In the paper, new heuristic algorithms for solving the task scheduling problem with moving executors to minimize the sum of completion times are considered. The corresponding combinatorial optimization problem is formulated for single executor. Hybrid solution algorithms are introduced and investigated, where evolutionary as well as simulated annealing procedures are applied. A simulated annealing algorithm assists an evolutionary algorithm in three different ways. It is used for the generation of the initial set of solutions of the evolutionary algorithm. Moreover, this algorithm attempts to improve the best solutions at current iterations of the evolutionary procedure. The results of the evaluation of the solution algorithms, which have been performed during the computer simulation experiments, are presented. The influence of the parameters of the solution algorithm as well as the task scheduling problem on the quality of results and on the time of computation is investigated.
16 stron ; 21 cm
16 pages ; 21 cm
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

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Skocz do pozycji: 2.

Tytuł:: Procedura szybkiego kojarzenia obiektów w klastery
Raport Badawczy = Research Report ; RB/55/2005
Autorzy:: Potrzebowski, Henryk (1943– )
Wydawca:: Instytut Badań Systemowych. Polska Akademia Nauk
Systems Research Institute. Polish Academy of Sciences
Powiązania:: Raport Badawczy = Research Report
Opis:: Bibliografia s. 8
W pracy przedstawiono szczególny model klasteringu, jako zadanie na grafie skierowanym. Omówiono implementację heurystycznego algorytmu, sposób jego pracy oraz uzyskane wyniki.
Bibliography p. 8
12 stron ; 21 cm
12 pages ; 21 cm
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

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Skocz do pozycji: 3.

Tytuł:: Application of soft computing in a discrete optimization problem
Raport Badawczy = Research Report ; RB/4/2001
Autorzy:: Kałuszko, Andrzej
Holnicki, Piotr
Wydawca:: Instytut Badań Systemowych. Polska Akademia Nauk
Systems Research Institute. Polish Academy of Sciences
Powiązania:: Raport Badawczy = Research Report
Opis:: Bibliografia s. 16
Bibliography p. 16
In the paper two methods of solving a discrete optimization problem are discussed. The problem itself is related to air quality protection on a regional scale. The approach refers to optimal allocation of financial means for emission reduction in a given set of power and heating plants. The implementation considered is sulfur-oriented. The problem is formally stated as cost-constrained minimization of environmental damage function by the optimal choice of desulfurization technologies, within the predefined set of the controlled plants. The receptor-oriented objective function utilizes air pollution forecast preprocessed by a regional scale dispersion model. An integer-type optimization problem is solved by two methods. The first method utilizes a heuristic algorithm designed for solving this specific problem, which directly finds discrete solution. Another approach is based on the classical gradient optimization algorithm and gives continuous, technologically not applicable solution. Then the continuous solution is transformed to the discrete form by enumeration of some discrete cases. Both algorithms has been implemented and tested on the real data for selected region. The case study relates to the set of major power planls in Silesia Region (Poland) and the basic desulfurization technologies, which are Io be allocated. The test calculations allows us to evaluate accuracy of the heuristic method as welI as applicability of both approaches for supporling decisions concerning optimal strategies of emission abatement on a regional scale.
16 stron ; 21 cm
16 pages ; 21 cm
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

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