question: private Instances computeInfoGain ( Instances instances , double defAcRt , Antd antd ) { Instances data = instances ; Instances [ ] splitData = antd . splitData ( data , defAcRt , m_Consequent ) ; if ( splitData != null ) { return splitData [ ( int ) antd . getAttrValue ( ) ] ; } else { return null ; } }
target:  Compute the best information gain for the specified antecedent