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Approximation schemes for covering and packing problems in image processing and VLSI
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Volume 32 ,  Issue 1  (January 1985) table of contents
Pages: 130 - 136  
Year of Publication: 1985
ISSN:0004-5411
Authors
Dorit S. Hochbaum  School of Business Administration, 350 Barrows Hall, University of California at Berkeley, Berkeley, CA
Wolfgang Maass  Department of Mathematics, University of Illinois, Chicago, IL
Publisher
ACM  New York, NY, USA
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Downloads (6 Weeks): 30,   Downloads (12 Months): 269,   Citation Count: 73
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ABSTRACT

A unified and powerful approach is presented for devising polynomial approximation schemes for many strongly NP-complete problems. Such schemes consist of families of approximation algorithms for each desired performance bound on the relative error &egr; > &Ogr;, with running time that is polynomial when &egr; is fixed. Though the polynomiality of these algorithms depends on the degree of approximation &egr; being fixed, they cannot be improved, owing to a negative result stating that there are no fully polynomial approximation schemes for strongly NP-complete problems unless NP = P. The unified technique that is introduced here, referred to as the shifting strategy, is applicable to numerous geometric covering and packing problems. The method of using the technique and how it varies with problem parameters are illustrated. A similar technique, independently devised by B. S. Baker, was shown to be applicable for covering and packing problems on planar graphs.


REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

 
1
BAKER, B. S.Approximation algorithms for NP-complete problems on planar graphs. In Proceed. ings of the 24th Annual IEEE Symposium on Foundations of Computer Science (Tucson, Ariz., Nov. 7-9). IEEE, New York, 1983, pp. 265-273.
 
2
BERMAN, F. D., LEIGHTON, F. T., AND SNYDER, L.Optimal tile salvage. Unpublished manuscript, 1982.
 
3
FOWLER, R. J., PATERSON, M. S., AND TANIMOTO, S. L.Optimal packing and covering in the plane are NP-complete. Inf. Proc. Lett. 12, 3 (June 1981), 133-137.
 
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HOCHBAUM, D. S., AND MAASS, W.Fast approximation schemes for geometric coveting and packing problems in robotics and VLSI. Unpublished manuscript, University of California, Berkeley, Calif., 1983.
 
6
JOHNSON, D. S."File NP-completeness column: An ongoing guide. ~ Algorithms 3, 2 (June 1982), 182-195.
 
7
TANIMOTO, S. L., AND FOWLER, R. J.Covering image subsets with patches. In Proceedings of the 5th International Conference on Pattern Recognition, 1980, pp. 835-839.

CITED BY  73

Collaborative Colleagues:
Dorit S. Hochbaum: colleagues
Wolfgang Maass: colleagues