Per citar aquest document: http://ddd.uab.cat/record/102
The long-step method of analytic centers for fractional problems
Nemirovski, A. (The Israel Institute of Technology)

Data: 1997
Resum: We develop a long-step surface-following version of the method of analytic centers for the fractional-linear problem min {t_0 t_0B(x) - A(x) (is in) H,B (x) (is in) K, x (is in) G}, where H is a closed convex domain, K is a convex cone contained in the recessive cone of H, G is a convex domain and B(·), A(·) are affine mappings. Tracing a two-dimensional surface of analytic centers rather than the usual path of centers allows to skip the initial "centering" phase of the path-following scheme. The proposed long-step policy of tracing the surface fits the best known overall polynomial-time complexity bounds for the method and, at the same time, seems to be more attractive computationally than the short-step policy, which was previously the only one giving good complexity bounds.
Llengua: Anglès.
Document: Article ; recerca ; article ; publishedVersion
Matèria: Fractional programming ; Generalized eigenvalue problem ; Interior point methods ; Analytic centers
Publicat a: Mathematical Programming, vol. 77 n. 2 (1997) p. 191-224, ISSN 0025-5610



34 p, 1.3 MB
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