I was learning data envelopment analysis and I was confused when I started dealing with fuzzy data. How can I know if a variable in my dataset is a fuzzy number or not? They mentioned that with figures but I don't know how they got those figures. Here is the screenshots of those pictures.
And even if I know that, how can I figure out what is Inputs.mL, Inputs.mR, Inputs.dL, Inputs.dR, Outputs.mL, Outputs.mR, Outputs.dL, Outputs.dR (Those terms are from the function read_data_fuzzy() from the library deaR).