I am carrying out a performance analysis of some companies using DEA. This involves precise and ordinal from likert scale) input factors to be computed using DEA. Please suggest an available DEA package that can do this, preferably one that is free.
For example, let us say that I have financial data such as net profit for 5 companies and the employee satisfaction (ranging from 1 to 5) from a Likert scale based questionnaire. Is there a DEA software package available which can handle both these type of data inputs to give me the relative efficiency of these 5 companies?