#NEWLINE# def build_vengeful_cooperation( self ) : #NEWLINE# #INDENT# '\n        Returns:\n        --------\n\n            The vengeful cooperation matrix derived from the\n            normalised cooperation matrix:\n\n                Dij = 2(Cij - 0.5)\n        ' #NEWLINE# return [ [ ( 2 * ( element - 0.5 ) ) for element in row ] for row in self . normalised_cooperation ]