Recognizing when heuristics can approximate minimum vertex covers is complete for parallel access to NP

Edith Hemaspaandra; Jörg Rothe; Holger Spakowski

RAIRO - Theoretical Informatics and Applications (2010)

  • Volume: 40, Issue: 1, page 75-91
  • ISSN: 0988-3754

Abstract

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For both the edge deletion heuristic and the maximum-degree greedy heuristic, we study the problem of recognizing those graphs for which that heuristic can approximate the size of a minimum vertex cover within a constant factor of r, where r is a fixed rational number. Our main results are that these problems are complete for the class of problems solvable via parallel access to NP. To achieve these main results, we also show that the restriction of the vertex cover problem to those graphs for which either of these heuristics can find an optimal solution remains NP-hard.

How to cite

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Hemaspaandra, Edith, Rothe, Jörg, and Spakowski, Holger. "Recognizing when heuristics can approximate minimum vertex covers is complete for parallel access to NP." RAIRO - Theoretical Informatics and Applications 40.1 (2010): 75-91. <http://eudml.org/doc/92790>.

@article{Hemaspaandra2010,
abstract = { For both the edge deletion heuristic and the maximum-degree greedy heuristic, we study the problem of recognizing those graphs for which that heuristic can approximate the size of a minimum vertex cover within a constant factor of r, where r is a fixed rational number. Our main results are that these problems are complete for the class of problems solvable via parallel access to NP. To achieve these main results, we also show that the restriction of the vertex cover problem to those graphs for which either of these heuristics can find an optimal solution remains NP-hard. },
author = {Hemaspaandra, Edith, Rothe, Jörg, Spakowski, Holger},
journal = {RAIRO - Theoretical Informatics and Applications},
keywords = {Computational complexity; completeness; minimum vertex cover heuristics; approximation; parallel access to NP},
language = {eng},
month = {3},
number = {1},
pages = {75-91},
publisher = {EDP Sciences},
title = {Recognizing when heuristics can approximate minimum vertex covers is complete for parallel access to NP},
url = {http://eudml.org/doc/92790},
volume = {40},
year = {2010},
}

TY - JOUR
AU - Hemaspaandra, Edith
AU - Rothe, Jörg
AU - Spakowski, Holger
TI - Recognizing when heuristics can approximate minimum vertex covers is complete for parallel access to NP
JO - RAIRO - Theoretical Informatics and Applications
DA - 2010/3//
PB - EDP Sciences
VL - 40
IS - 1
SP - 75
EP - 91
AB - For both the edge deletion heuristic and the maximum-degree greedy heuristic, we study the problem of recognizing those graphs for which that heuristic can approximate the size of a minimum vertex cover within a constant factor of r, where r is a fixed rational number. Our main results are that these problems are complete for the class of problems solvable via parallel access to NP. To achieve these main results, we also show that the restriction of the vertex cover problem to those graphs for which either of these heuristics can find an optimal solution remains NP-hard.
LA - eng
KW - Computational complexity; completeness; minimum vertex cover heuristics; approximation; parallel access to NP
UR - http://eudml.org/doc/92790
ER -

References

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