International Journal of Man-Machine Studies
Rough Sets in Knowledge Discovery 2: Applications, Case Studies, and Software Systems
Rough Sets in Knowledge Discovery 2: Applications, Case Studies, and Software Systems
On the combination of rough set theory and grey theory based on grey lattice operations
RSCTC'06 Proceedings of the 5th international conference on Rough Sets and Current Trends in Computing
A grey-based rough approximation model for interval data processing
Information Sciences: an International Journal
A Grey-Rough Set Approach for Interval Data Reduction of Attributes
RSEISP '07 Proceedings of the international conference on Rough Sets and Intelligent Systems Paradigms
Real formal concept analysis based on grey-rough set theory
Knowledge-Based Systems
On the combination of rough set theory and grey theory based on grey lattice operations
RSCTC'06 Proceedings of the 5th international conference on Rough Sets and Current Trends in Computing
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The suppliers selection problem is one of the most important components in supply chain management. In recent years, rough set theory has emerged as a powerful tool for suppliers selection problem. In this paper, we proposed a grey-based rough set approach to resolve suppliers selection problem. The work is motivated by the following observations: First, in the decision table of rough set theory, attribute values must be known precisely. Generally, decision makers’ judgments on attribute often cannot be estimated by the exact numerical value. Second, in rough set theory, the alternatives of ideal suppliers are decided by lower approximation, so the ranks of each ideal supplier is equal. Therefore it is difficult to select the best ideal supplier. The work procedure is shown as follows briefly: First, the attribute values of rough set decision table for all alternatives are decided by linguistic variables that can be expressed in grey number. Second, ideal suppliers are decided by the lower approximation of grey-based rough set theory. Third, the best ideal supplier is decided by grey relational analysis based on grey number. Finally, an example of selection problem of suppliers was used to illustrate the proposed approach.