import matplotlib.pyplot as plt

history_dict = history.history
loss_values = history_dict["loss"]
val_loss_values = history_dict["val_loss"]
epochs = range(1, len(loss) + 1)
plt.plot(epochs, loss_values, "bo", label="Training loss") ➊
plt.plot(epochs, val_loss_values, "b", label="Validation loss") ➋
plt.title("Training and validation loss")
plt.xlabel("Epochs")
plt.ylabel("Loss")
plt.legend()
plt.show()

➊ ‘bo’는 파란색 점을 의미합니다.

➋ ‘b’는 파란색 실선을 의미합니다.