#NEWLINE# def get_l2_act_cost( self , state , target , coeff ) : #NEWLINE# #INDENT# '\n        .. todo::\n\n            WRITEME\n        ' #NEWLINE# avg = state . mean ( axis = 0 ) #NEWLINE# diff = ( target - target ) #NEWLINE# return ( coeff * T . sqr ( diff ) . mean ( ) )