NameError: name 'history' is not defined

Question

Setting up the Model, Setting up Training and Validation Data for the experiment, Model Training has executed. But after training of the neural network, during Visualizing the Training Process, I received an error.

import matplotlib.pyplot as plt
%matplotlib inline

acc=history.history['categorical_accuracy']
val_acc=history.history['val_categorical_accuracy']
loss=history.history['loss']
val_loss=history.history['val_loss']

epochs=range(1,len(acc)+1)
plt.xlabel('Epochs')
plt.ylabel('Accuracy')
plt.plot(epochs, acc, 'bo', label='Training acc')
plt.plot(epochs, val_acc, 'b', label='Validation acc')
plt.title('Training and validation accuracy')
plt.legend()
plt.figure()

plt.plot(epochs, loss, 'bo', label='Training loss')
plt.plot(epochs, val_loss, 'b', label='Validation loss')
plt.title('Training and validation loss')
plt.xlabel('Epochs')
plt.ylabel('Loss')
plt.legend()
plt.show()

NameError                                 Traceback (most recent call last)
<ipython-input-7-e1591c31f061> in <module>()
      2 get_ipython().magic('matplotlib inline')
      3 
----> 4 acc=history.history['categorical_accuracy']
      5 val_acc=history.history['val_categorical_accuracy']
      6 loss=history.history['loss']

NameError: name 'history' is not defined

Answer 1

When you call model.fit it should be

history = model.fit()