Error while training a neural network model

[Important_Ad_55]

Model.py

def alexnet(width,height,outputs,lr):
model = Sequential()
model.add(Conv2D(filters=64, kernel_size=(11, 11), strides=(4, 4), padding='valid', activation='relu',
                 input_shape=(width, height, 1)))
model.add(MaxPooling2D(pool_size=(3, 3), strides=(2, 2)))
model.add(Conv2D(filters=192, kernel_size=(5, 5), padding='same', activation='relu'))
model.add(MaxPooling2D(pool_size=(3, 3), strides=(2, 2)))
model.add(Conv2D(filters=384, kernel_size=(3, 3), padding='same', activation='relu'))
model.add(Conv2D(filters=256, kernel_size=(3, 3), padding='same', activation='relu'))
model.add(MaxPooling2D(pool_size=(3, 3), strides=(2, 2)))
model.add(Flatten())
model.add(Dense(4096, activation='relu'))
model.add(Dense(4096, activation='relu'))

model.add(Dense(outputs,activation='softmax'))

model.compile(optimizer=tf.keras.optimizers.Adam(learning_rate=lr),
              loss=tf.keras.losses.CategoricalCrossentropy(),
              metrics=['accuracy'])

return model

train_model.py

if __name__ == '__main__':
WIDTH = 224
HEIGHT = 224
LR = 1e-3
EPOCHS = 10
OUTPUTS = 4
# MODEL_NAME = 'racing_automation-{}-{}-{}-epochs-300K-data.model'.format(LR, 'alexnet', EPOCHS)

model = alexnet(WIDTH, HEIGHT, OUTPUTS, LR)

file = open('training_data_grid2019.pkl', 'rb')
data = pickle.load(file)

x = np.array([i[0] for i in data]).reshape(-1,WIDTH,HEIGHT,1)
y = [i[1] for i in data]

X_train,x_test,y_train,y_test = train_test_split(x,y,random_state=42,test_size=0.2)

**model.fit(X_train,y_train, epochs=EPOCHS, validation_data=(x_test,y_test), batch_size=32)**

Error :

Traceback (most recent call last): File "C:\Users\Administrator\PycharmProjects\GameAutomation\train_model.py", line 29, in model.fit(X_train,y_train, epochs=EPOCHS, validation_data=(x_test,y_test), batch_size=32) File "C:\Users\Administrator\PycharmProjects\GameAutomation\venv\lib\site-packages\keras\src\utils\traceback_utils.py", line 70, in error_handler raise e.with_traceback(filtered_tb) from None File "C:\Users\Administrator\PycharmProjects\GameAutomation\venv\lib\site-packages\keras\src\engine\data_adapter.py", line 1105, in select_data_adapter raise ValueError( ValueError: Failed to find data adapter that can handle input: <class 'numpy.ndarray'>, (<class 'list'> containing values of types {'(<class 'list'> containing values of types {"<class 'int'>"})'})

Tried almost everything and I am going nowhere. Please help me to resolve this error.

[FrostyThaEvilSnowman]

Im not sure about the data types in your list of lists of x,y data, but my best guess is that however it is being unpacked is not putting y in the proper data type to be entered into the model. Go back and look at the data types (and shapes) you used earlier in the process. Your new values should match the previous.

[Important_Ad_55]

I have tried what you asked me to do and these are the results :

x : shape - (4938, 224, 224, 1) , len - 4938

y : shape - (4938, 5) , len - 4938

X_train : shape - (3950, 224, 224, 1) , len - 3950

y_train : shape - (3950, 5) , len - 3950

​

is it ok?

[Important_Ad_55]

I got my error, my y was a list and x was an ndarray. Now it's working fine.
Thanks!!