In this paper, most productive scale size (MPSS) for input and output mixes is measured from pessimistic point of view by using pessimistic data envelopment analysis (DEA). It is proved that the decision making unit (DMU) with the maximum pessimistic efficiency represents MPSS. However, the...

In a very recent note by Gao and Ni [B. Gao, M.F. Ni, A note on article "The evidential reasoning approach for multiple attribute decision analysis using interval belief degrees", European Journal of Operational Research, in press, doi:10.1016/j.ejor.2007.10.0381], they argued that Yen's...