2017 Volume 12 Pages 1414-1433
This paper proposes a novel approach, called dynamic integrated slack-based measure (DISBM) modeling approach, to evaluating multi-period non-radial slacks of non-storable production characterized with carry-over activities. The proposed modeling approach incorporates conventional dynamic slack-based measure (DSBM) technical efficiency and service effectiveness into data envelopment analysis (DEA) modeling such that multi-period input excesses, output shortages and consumption gaps can be simultaneously determined. Some important properties of the proposed DISBM modeling are explored. A case study on the efficiency and effectiveness of Taiwan’s intercity bus transport during 2007-2010 is presented. The results indicate that the proposed DISBM modeling is superior to conventional DSBM modeling in terms of benchmarking power, and that the non-radial slacks associated with input, output and consumption variables do provide rational information to rectify the inefficient and/or ineffective units throughout the production process.
