The authors wish to make the following corrections to the paper [1].
On page 6 of [1], the last code line but one in Algorithm 1 (i.e., “18: Q = sum_2m/sum_sigma;”) should be updated to “18: Q = sum_sigma/sum_2m;”.
On page 9 of [1], the two numbers in the first line, 2.750 and 908.065, should be replaced by 2.705 and 97.880, respectively.
On page 13 of [1], the reference [8] should be replaced by the new reference [2] we listed below.
Note that the above errors do not affect the Q values (see Tables 2 and 3 in [1]) that we computed for each subject software system in [1], since all the Q values were computed according to the correct Equation (2) in [1]. Thus, the above changes will not affect the conclusions that we obtained in paper [1]. The authors would like to apologize for any inconvenience caused by these errors.
References
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