2009•Journal of Inner Mongolia UniversityRequires access

Research on the Meaning of Engineering-ratio on DEA Models

Zhanxin Ma

Abstract

Data envelopment analysis(DEA) is an evaluation method based on engineering-ratio conception,but the research on DEA efficiency is very limited.To four basic DEA models-C2R,C2GS2,FG and ST,a necessary and sufficient condition for DEA efficiency is provided,and the optimal value of an objective function on the DEA model is proved to be the ratio of efficient value on evaluated DMU to the best one.At last,the meanings on DEA efficiency and weak DEA efficiency are explained.

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Key concepts: Data envelopment analysis, Value (mathematics), Function (biology), Meaning (existential), Mathematics, Computer science, Econometrics, Mathematical optimization