数据包络分析模型的优缺点

Data Envelopment Analysis: Based on the concept of Pareto Optimality. When
measuring the efficiency value of DMU, only the production margin is required.
The production margin would then be compared with actual production to
calculate efficiency values.
Strengths:
(i) DEA could be used to handle problems with multiple inputs and outputs.
(ii) It would not be influenced by different scales.
(iii) The results of DEA evaluation on efficiency is a composite indicator, and
could be used to apply the concept of total production factors in economics.
(iv) The weighted value in the DEA model is the product of mathematical
calculation and hence free from human subjectivity.
(v) DEA can deal with interval data as well as ordinal data.
(vi) The results of the evaluation by DEA could provide more information on
the data used, which could be used as a reference in the decision-making
process.
Weaknesses:
(i) It yield