nelder_mead.py 文件源码

def func_impl(self, x):
        objval, invalid = None, False
        for i, t in enumerate(x):
            if t < self.p_min[i] or t > self.p_max[i]:
                objval = float("inf")
                invalid = True
        if not invalid:
            x = [int(np.round(x_t)) if p_t is "integer" else x_t for p_t, x_t in zip(self.p_types, x)]
            objval = self._coef * self.func(x)

        print("{:5d} | {} | {:>15.5f}".format(
            self.n_eval,
            " | ".join(["{:>15.5f}".format(t) for t in x]),
            self._coef * objval
        ))

        self.n_eval += 1
        return objval