环境版本：
tensorflow 2.1.0
pandas 1.0.5
matplotlib 3.3.0
numpy 1.19.1
sklearn 0.23.1
tensorflow_core.python.keras.api._v2.keras 2.2.4-tf
运行结果：
‘loss’: [442393718255481.75,
2.302683508820967,
2.302697907222401,
2.302691459898515,
2.3027007299249824,
2.302672009312023,
2.302692409688776,
2.3026987249894577,
2.3026824904355134,
2.3026889028029007],
‘accuracy’: [0.09818182,
0.09878182,
0.099472724,
0.09790909,
0.09832727,
0.09965455,
0.09745455,
0.09874546,
0.099,
0.098927274],