Efficient Breadth-First Reduct Search

Veera Boonjing, Pisit Chanvarasuth
2020 Mathematics  
This paper formulates the problem of determining all reducts of an information system as a graph search problem. The search space is represented in the form of a rooted graph. The proposed algorithm uses a breadth-first search strategy to search for all reducts starting from the graph root. It expands nodes in breadth-first order and uses a pruning rule to decrease the search space. It is mathematically shown that the proposed algorithm is both time and space efficient.
doi:10.3390/math8050833 fatcat:ekmcem4wgvhitagihdhxiononi