Abstract
Rough set theory uses three pair-wise disjoint regions to approximate a concept. This paper adopts actionable strategies in three-way decision with rough sets. We suggest actionable rules for transferring objects from one region to another and propose a model of optimal actions based on cost-benefit analysis. Actionable strategies allow us to transfer objects from less favourable regions to a favourable region, so that we can reduce the boundary region and the negative region. We design and analyze an algorithm for searching for an optimal solution. The experimental results on a real dataset show that the algorithm has promising outcomes and objects can be effectively moved between regions.
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Acknowledgements
This work is partially supported by a Discovery Grant (NSERC, Canada), Mitacs, Saskatchewan Innovation and Opportunity Graduate Scholarship, Gerhard Herzberg Fellowship, and Sampson J. Goodfellow Scholarship. The authors thank Professor Howard Hamilton and Dr. Mehdi Sadeqi for their constructive suggestions and comments.
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Gao, C., Yao, Y. (2017). Actionable Strategies in Three-Way Decisions with Rough Sets. In: Polkowski, L., et al. Rough Sets. IJCRS 2017. Lecture Notes in Computer Science(), vol 10314. Springer, Cham. https://doi.org/10.1007/978-3-319-60840-2_13
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DOI: https://doi.org/10.1007/978-3-319-60840-2_13
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