Sangam: A Confluence of Knowledge Streams

The Complexity of Zadeh's Pivot Rule

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dc.contributor Hopp, Alexander Vincent
dc.date 2022-06-19T04:01:38Z
dc.date 2022-06-19T04:01:38Z
dc.date 2022-06-18T05:38:39Z
dc.date 2020
dc.date.accessioned 2023-02-17T20:35:59Z
dc.date.available 2023-02-17T20:35:59Z
dc.identifier https://library.oapen.org/handle/20.500.12657/56796
dc.identifier https://directory.doabooks.org/handle/20.500.12854/84219
dc.identifier https://library.oapen.org/bitstream/20.500.12657/56796/1/external_content.pdf
dc.identifier https://library.oapen.org/bitstream/20.500.12657/56796/1/external_content.pdf
dc.identifier https://library.oapen.org/bitstream/20.500.12657/56796/1/external_content.pdf
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/242807
dc.description The Simplex algorithm is one of the most important algorithms in discrete optimization, and is the most used algorithm for solving linear programs in practice. In the last 50 years, several pivot rules for this algorithm have been proposed and studied. For most deterministic pivot rules, exponential lower bounds were found, while a probabilistic pivot rule exists that guarantees termination in expected subexponential time. One deterministic pivot rule that is of special interest is Zadeh's pivot rule since it was the most promising candidate for a polynomial pivot rule for a long time. In 2011, Friedmann proved that this is not true by providing an example forcing the Simplex algorithm to perform at least a subexponential number of iterations in the worst case when using Zadeh's pivot rule. Still, it was not known whether Zadeh's pivot rule might achieve subexponential worst case running time. Next to analyzing Friedmann's construction in detail, we develop the first exponential lower bound for Zadeh's pivot rule. This closes a long-standing open problem by ruling out this pivot rule as a candidate for a deterministic, subexponential pivot rule in several areas of linear optimization and game theory.
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dc.language eng
dc.publisher Logos Verlag Berlin
dc.publisher Logos Verlag Berlin
dc.rights open access
dc.subject Computers
dc.subject Computer Science
dc.subject bic Book Industry Communication::U Computing & information technology::UY Computer science
dc.title The Complexity of Zadeh's Pivot Rule
dc.resourceType book
dc.alternateIdentifier 9783832552060
dc.alternateIdentifier https://doi.org/10.30819/5206
dc.licenseCondition open access
dc.licenseCondition n/a
dc.licenseCondition n/a
dc.licenseCondition n/a
dc.identifierdoi https://doi.org/10.30819/5206
dc.relationisPublishedBy 04b263a1-7fba-4491-9eae-1c394ac42fc3
dc.relationisbn 9783832552060
dc.relationisFundedBy Knowledge Unlatched
dc.collection Knowledge Unlatched (KU)
dc.imprint Logos Verlag Berlin


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