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  • 标题:String Periods in the Order-Preserving Model
  • 作者:Garance Gourdel ; Tomasz Kociumaka ; Jakub Radoszewski
  • 期刊名称:LIPIcs : Leibniz International Proceedings in Informatics
  • 电子版ISSN:1868-8969
  • 出版年度:2018
  • 卷号:96
  • 页码:38:1-38:16
  • DOI:10.4230/LIPIcs.STACS.2018.38
  • 出版社:Schloss Dagstuhl -- Leibniz-Zentrum fuer Informatik
  • 摘要:The order-preserving model (op-model, in short) was introduced quite recently but has already attracted significant attention because of its applications in data analysis. We introduce several types of periods in this setting (op-periods). Then we give algorithms to compute these periods in time O(n), O(n log log n), O(n log^2 log n/log log log n), O(n log n) depending on the type of periodicity. In the most general variant the number of different periods can be as big as Omega(n^2), and a compact representation is needed. Our algorithms require novel combinatorial insight into the properties of such periods.
  • 关键词:order-preserving pattern matching; period; efficient algorithm
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