Volume 38, Number 4, 581-596, DOI: 10.1007/s10898-006-9097-x

Two level minimization in multidimensional scaling

Antanas Žilinskas and Julius Žilinskas

From the issue entitled "Multilevel Optimization: Algorithms and Applications"

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Abstract

Multidimensional scaling with city block norm in embedding space is considered. Construction of the corresponding algorithm is reduced to minimization of a piecewise quadratic function. The two level algorithm is developed combining combinatorial minimization at upper level with local minimization at lower level. Results of experimental investigation of the efficiency of the proposed algorithm are presented as well as examples of its application to visualization of multidimensional data.

Keywords  Multilevel optimization - Multidimensional scaling - Metaheuristics - Global optimization

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