tensorflow 2.x 多分类混淆矩阵及评价指标计算方法（精确率、召回率、f1分数）

import tensorflow as tf


class MultiLabelConfusionMatrix(object):
    """ Attention Please: y_true and y_pred are must to be two-dimensional matrix, and their shape are [batch_size, time_steps]. """
    def __init__(self, classes_num, pad_type='pre')<