{"title":"A survey on graph problems parameterized above and below guaranteed values","authors":"Gregory Gutin, Matthias Mnich","doi":"10.1016/j.cosrev.2025.100795","DOIUrl":null,"url":null,"abstract":"We survey the field of algorithms and complexity for graph problems parameterized above or below guaranteed values. Those problems seek, for a given graph <mml:math altimg=\"si1.svg\" display=\"inline\"><mml:mi>G</mml:mi></mml:math>, a solution whose value is at least <mml:math altimg=\"si2.svg\" display=\"inline\"><mml:mrow><mml:mi>g</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mi>G</mml:mi><mml:mo>)</mml:mo></mml:mrow><mml:mo linebreak=\"goodbreak\" linebreakstyle=\"after\">+</mml:mo><mml:mi>k</mml:mi></mml:mrow></mml:math> or at most <mml:math altimg=\"si3.svg\" display=\"inline\"><mml:mrow><mml:mi>g</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mi>G</mml:mi><mml:mo>)</mml:mo></mml:mrow><mml:mo linebreak=\"goodbreak\" linebreakstyle=\"after\">−</mml:mo><mml:mi>k</mml:mi></mml:mrow></mml:math>, where <mml:math altimg=\"si4.svg\" display=\"inline\"><mml:mrow><mml:mi>g</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mi>G</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> is a guarantee on the value that <ce:italic>any</ce:italic> solution on <mml:math altimg=\"si1.svg\" display=\"inline\"><mml:mi>G</mml:mi></mml:math> takes. The goal is to design algorithms which find such solution in time whose complexity in <mml:math altimg=\"si6.svg\" display=\"inline\"><mml:mi>k</mml:mi></mml:math> is decoupled from that in the guarantee, or to rule out the existence of such algorithms by means of intractability results. We discuss a large number of algorithms and intractability results, and complement them by several open problems.","PeriodicalId":48633,"journal":{"name":"Computer Science Review","volume":"24 1","pages":"100795"},"PeriodicalIF":12.7000,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Computer Science Review","FirstCategoryId":"94","ListUrlMain":"https://doi.org/10.1016/j.cosrev.2025.100795","RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
We survey the field of algorithms and complexity for graph problems parameterized above or below guaranteed values. Those problems seek, for a given graph G, a solution whose value is at least g(G)+k or at most g(G)−k, where g(G) is a guarantee on the value that any solution on G takes. The goal is to design algorithms which find such solution in time whose complexity in k is decoupled from that in the guarantee, or to rule out the existence of such algorithms by means of intractability results. We discuss a large number of algorithms and intractability results, and complement them by several open problems.
期刊介绍:
Computer Science Review, a publication dedicated to research surveys and expository overviews of open problems in computer science, targets a broad audience within the field seeking comprehensive insights into the latest developments. The journal welcomes articles from various fields as long as their content impacts the advancement of computer science. In particular, articles that review the application of well-known Computer Science methods to other areas are in scope only if these articles advance the fundamental understanding of those methods.