When I fine tune VGG in Stanford Dog Breed Dataset,I found different batch_size cause loss different.
for example, when I set batch_size = 1,the loss plot looks like this: 
newplot.png700×450 23.3 KB

but when I set batch_size = 32, the loss plot seems normal and looks like this:

newplot (1).png700×450 21 KB

what is the reason of this phenomena?