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A Nonlinear Bilevel Programming Approach for Multifocal Region Creation in Metric Indexing

Skarding, Joakim
Master thesis
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URI
http://hdl.handle.net/11250/2615813
Date
2015
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  • Institutt for datateknologi og informatikk [7357]
Abstract
This thesis presents a bilevel programming approach for optimizing region creation in metric indexing techniques. By creating regions from Power transformed distances, region quality is increased compared to the linear alternative. The bilevel algorithm shows a substantially higher performance than nonlinear direct search techniques in benchmarks. Heuristics for the outer level of the bilevel approach are the main focus and contribution of this work.
Publisher
NTNU

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