Abstract:
In this paper we introduce a discrete version of the online traveling salesman problem (DOLTSP). We represent the metric space using a weighted graph, where the server is allowed to modify its route only at the vertices. This limitation directly affects the capacity of the server to react and increases the risk related to each decision. We prove lower bounds on the performance of deterministic online algorithms in different scenarios of DOLTSP, and we present distinct algorithms for the problem, some of them achieving the best possible performance. We measure the performance of the algorithms using competitive analysis, the most widely accepted method for evaluating online algorithms. Besides, we perform an empirical simulation on paths, generating a significant set of instances and measuring the quality of the solutions given by each algorithm. Our experiments show that algorithms with the best competitive ratio do not have the best performance in practice. © 2009 Springer Berlin Heidelberg.
Registro:
Documento: |
Artículo
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Título: | Discrete online TSP |
Autor: | Aprea, M.; Feuerstein, E.; Sadovoy, G.; De Loma, A.S. |
Ciudad: | San Francisco, CA |
Filiación: | Departamento de Computación, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón I, (1428) Capital Federal, Argentina
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Palabras clave: | Discrete metric spaces; Online algorithms; TSP; Competitive analysis; Competitive ratio; Deterministic online algorithms; Discrete metric spaces; Empirical simulations; Lower bounds; Metric spaces; Online algorithms; TSP; Weighted graph; Control theory; Risk perception; Set theory; Topology; Traveling salesman problem; Algorithms |
Año: | 2009
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Volumen: | 5564 LNCS
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Página de inicio: | 29
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Página de fin: | 42
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DOI: |
http://dx.doi.org/10.1007/978-3-642-02158-9_5 |
Título revista: | 5th International Conference on Algorithmic Aspects in Information and Management, AAIM 2009
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Título revista abreviado: | Lect. Notes Comput. Sci.
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ISSN: | 03029743
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03029743_v5564LNCS_n_p29_Aprea |
Referencias:
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Citas:
---------- APA ----------
Aprea, M., Feuerstein, E., Sadovoy, G. & De Loma, A.S.
(2009)
. Discrete online TSP. 5th International Conference on Algorithmic Aspects in Information and Management, AAIM 2009, 5564 LNCS, 29-42.
http://dx.doi.org/10.1007/978-3-642-02158-9_5---------- CHICAGO ----------
Aprea, M., Feuerstein, E., Sadovoy, G., De Loma, A.S.
"Discrete online TSP"
. 5th International Conference on Algorithmic Aspects in Information and Management, AAIM 2009 5564 LNCS
(2009) : 29-42.
http://dx.doi.org/10.1007/978-3-642-02158-9_5---------- MLA ----------
Aprea, M., Feuerstein, E., Sadovoy, G., De Loma, A.S.
"Discrete online TSP"
. 5th International Conference on Algorithmic Aspects in Information and Management, AAIM 2009, vol. 5564 LNCS, 2009, pp. 29-42.
http://dx.doi.org/10.1007/978-3-642-02158-9_5---------- VANCOUVER ----------
Aprea, M., Feuerstein, E., Sadovoy, G., De Loma, A.S. Discrete online TSP. Lect. Notes Comput. Sci. 2009;5564 LNCS:29-42.
http://dx.doi.org/10.1007/978-3-642-02158-9_5