kfac_utils.py 文件源码

def detectMinVal(input_mat, var, threshold=1e-6, name='', debug=False):
    eigen_min = tf.reduce_min(input_mat)
    eigen_max = tf.reduce_max(input_mat)
    eigen_ratio = eigen_max / eigen_min
    input_mat_clipped = clipoutNeg(input_mat, threshold)

    if debug:
        input_mat_clipped = tf.cond(tf.logical_or(tf.greater(eigen_ratio, 0.), tf.less(eigen_ratio, -500)), lambda: input_mat_clipped, lambda: tf.Print(
            input_mat_clipped, [tf.convert_to_tensor('screwed ratio ' + name + ' eigen values!!!'), tf.convert_to_tensor(var.name), eigen_min, eigen_max, eigen_ratio]))

    return input_mat_clipped