COURSE 2 WEEK 2 validation accuarcy stuck at 0.5000

Course Q&A TensorFlow Developer Professional Convolutional Neural Networks in TensorFlow
1

my validation accuarcy when i train the model is stuck at 0.5000 in each epoch no matter how much i tune with the code.
i tried everything but it’s stuck at the exact number of 0.5000
please HELP!

2

Can you show the code snippet of your model? or give more information about your problem and the configurations you have?

3

For those with the same problem: use SIGMOID instead of SOFTMAX in the last layer

4

Me too, my code is as same as what teacher gave. And I do use SIGMOD activation rather than SOFTMAX.

Finally, I found the different part.
I use a bigger learning rate 0.01 rather than a given one 0.001