def csi(self):
        """Gilbert's Score or Threat Score or Critical Success Index a/(a+b+c)"""
        return self.table[0, 0] / (self.table[0, 0] + self.table[0, 1] + self.table[1, 0])
def csi ( self ) : return self . table [ 0 , 0 ] / ( self . table [ 0 , 0 ] + self . table [ 0 , 1 ] + self . table [ 1 , 0 ] )
Gilbert's Score or Threat Score or Critical Success Index a/(a+b+c)