Welcome to Volume 4, Issue 1 of the International Journal of Green Computing (UGC). The need of the hour is environmentally responsible use of computers and related resources for designing, manufacturing, using and disposing of the products as well as associated systems. The six papers in this issue would reflect these ideas directly as well as indirectly. The first paper by Amala and Vishnu focuses on providing an alternative approach for the tradeoff plot of ROC curve and the computation of AUC using a special function of sigmoid shape called Error function. The entire work has been carried out for providing a new approach for the construction of Binormal ROC curve, which makes use of Error function which can be called as ErROC curve. The summary measure AUC of the resulting ErROC curve has been estimated and defined as ErAUC.
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