Hello!
Is anyone know the reason why pre-trained model starts with good accuracy but after just jumping around this value and does not train.
On the image that I attached, I tried AlexNet with different numbers of batch, epochs, and optimizers.
I also tried other (VGG, ResNet) but results were similar.
The dataset that I use: Scratches on concrete surface (around 2000 images)

ALEXNET1434×1318 333 KB