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New Variants of Pattern Matching with Constants and Variables

  • Yuki Igarashi
  • Diptarama
  • Ryo Yoshinaka
  • Ayumi Shinohara
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10706)

Abstract

Given a text and a pattern over two types of symbols called constants and variables, the parameterized pattern matching problem is to find all occurrences of substrings of the text that the pattern matches by substituting a variable in the text for each variable in the pattern, where the substitution should be injective. The function matching problem is a variant of it that lifts the injection constraint. In this paper, we discuss variants of those problems, where one can substitute a constant or a variable for each variable of the pattern. We give two kinds of algorithms for both problems, a convolution-based method and an extended KMP-based method, and analyze their complexity.

Keywords

Pattern matching Parameterized pattern matching Function matching Parameterized pattern queries 

Notes

Acknowledgements

This work is supported by Tohoku University Division for Interdisciplinary Advance Research and Education, ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan), and JSPS KAKENHI Grant Number JP15H05706.

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Yuki Igarashi
    • 1
  • Diptarama
    • 1
  • Ryo Yoshinaka
    • 1
  • Ayumi Shinohara
    • 1
  1. 1.Graduate School of Information SciencesTohoku UniversityAoba-ku, SendaiJapan

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