The rank of DMUs and efficiency score(theta) as well as residually given reference
set(ref:) and slacks(islack: or oslack:) are listed in the above results. Store C is the
only efficient DMU and seems to be referent to all other stores. The result window will
display the above result and “dea.log” file that contains the above result will be created
in your working directory. The “.” in the result file represents some small numbers
less than 10 to the minus 12 powers which mostly can be ignored. However, sometimes
when you want to analyze the financial data, the distinction between zero and “.” value
may be required to keep the accuracy.