The DEA method has many advantages. For example it gives one an
opportunity to study objects described with multiple expenditures and multiple
results. Furthermore, DEA does not require very specific information, as
opposed to index-based or econometric methods. With this method, one can
determine the relationships between global expenditures and global results.
Using DEA, one can to determine the efficiency with which a multi-dimensional
system of expenditures is transformed into a multi-dimensional system of
results. Thanks to DEA, expenditures and results do not need to be expressed in
monetary units