add noise to one log at a time

Today, I add noise to one log at a time.

Summary:

I use exactly the same codes for every input but I cannot get prediction results if I add noise to some inputs.

I found that there are some NaNs of the predicted values so that I can not calculate the accuracy. For now, I do not know why it happens.

Tomorrow, I will try to find the reason for the above problem and continue to analyze the noise of logs.