I am trying to predict a continuous value (using a Neural Network for the first time). I have normalized the input data. I can't figure out why I am getting a loss: nan
output starting with the first epoch.
I read and tried many suggestions from previous answers to the same question but that none of them helped me. My training data shape is: (201917, 64)
. Here's my code:
model = Sequential()
model.add(Dense(100, input_dim=X.shape[1], activation='relu'))
model.add(Dense(100, activation='relu'))
model.add(Dense(100, activation='relu'))
# Output layer
model.add(Dense(1, activation='linear'))
# Construct the neural network inside of TensorFlow
model.compile(loss='mean_squared_error', optimizer='Adam')
# train the model
model.fit(X_train, y_train, epochs=10, batch_size=32,
shuffle=True, verbose=2)
These are the steps that you can take to find the cause of your problem:
Make sure that your dataset is what it should be:
Normalize your model using Dropout, BatchNormalization, L1/L2 regularization, change your batch_size, or scale your data to other ranges (e.g. [-1, 1]).
Reduce the size of your network.
Change other hyper-parameters (e.g. optimizer or activation function).