Function softmax

examples/onnx/tiny_yolov2.py:54–56

(x)

        return x * (1 - x) if derivative else 1 / (1 + np.exp(-x))

    def softmax(x):
        scoreMatExp = np.exp(np.asarray(x))
        return scoreMatExp / scoreMatExp.sum(0)

    clut = [(0, 0, 0), (255, 0, 0), (255, 0, 255), (0, 0, 255), (0, 255, 0),
            (0, 255, 128), (128, 255, 0), (128, 128, 0), (0, 128, 255),