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Abstract
This paper extends the definition of manufacturing flexibility by identifying new elements and developing a new way to model these elements as fuzzy and/or crisp numbers. Then the manufacturing flexibility of the system is aggregated by both crisp and fuzzy flexibility elements with different important weights. Numerical examples are provided to analyse the limitation of previous approaches and illustrate the proposed model.
Acknowledgment
The authors would like to thank the anonymous referees for their valuable comments and suggestions.