I am an Assistant Professor at University of the Punjab and a co-founder of Solutyics, a company providing data engineering, advanced data analytical and AI services. If you have any feedback or question, you can contact me at atif.iqtm@pu.edu.pk or atif.hussain@solutyics.com
this dea problem is input oriented but in the results sheet it can be seen that dea still offers some changes on outputs???io model means only inputs will decrease to some degree, but outputs are constant,are not they?
Thank you so much Sir, you explained it really well and it works also. However, I have a question, if we have both desirable and undesirable outputs then how we have to specify the undesirable outputs? Looking forward to hear from you Sir
Hi. You can't handle undesirable outputs directly in deaR package. However, you can use the inversion approach. Transform your undesirable output by inversion (1/value) and then use those inverted values as your output instead of the original values. If you want to use Directional Distance Function instead of simple inversion, use rDEA package which has a function dea.ddf(). However, in my opinion, instead of fancy techniques, inversion approach is quite intuitive and works well in most cases.
