A Tentative Approach to Minimal Reducts by Combining Several Algorithms

  • Ning Xu
  • Yunxiang Liu
  • Ruqi Zhou
Part of the Communications in Computer and Information Science book series (CCIS, volume 15)


Finding minimal reducts is a NP-hard problem. For obtain a feasible solution, depth-first-searching is mainly used and a feasible reduct always can be gotten. Whether the feasible reduct is a minimal reduct or not and how far it is to minimal reduct, both are not known. It only gives the information that how many attributes it has and it is a reduct. Based on rough sets reduction theory and the data structure of information system, the least condition attributes to describe the system’s classified characteristics can be known. So an area of searching minimal reducts is decided. By binary search in the area, the minimal reducts can be gotten quickly and doubtlessly.


rough sets algorithm attribute reduction minimal reduct 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Ning Xu
    • 1
    • 2
  • Yunxiang Liu
    • 1
  • Ruqi Zhou
    • 2
  1. 1.School of Computer Science and Information EngineeringShanghai Institute of TechnologyShanghaiChina
  2. 2.Dept. of Computer ScienceGuangdong Institute of EducationGuangzhouChina

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