initiating_gis_5

gistfile1.txt

    def __optimize(self):
        """
        Optimization of the DEA model
        Use: http://docs.scipy.org/doc/scipy-0.17.0/reference/generated/scipy.optimize.linprog.html
        A = coefficients in the constraints
        b = rhs of constraints
        c = coefficients of the target function
        :return:
        """
        d0 = self.m + self.r + self.n
        # iterate over units
        for unit in self.unit_:
            # weights
            x0 = np.random.rand(d0) - 0.5
            x0 = fmin_slsqp(self.__target, x0, f_ieqcons=self.__constraints, args=(unit,))
            # unroll weights
            self.input_w, self.output_w, self.lambdas = x0[:self.m], x0[self.m:(self.m+self.r)], x0[(self.m+self.r):]
            self.efficiency[unit] = self.__efficiency(unit)