if you dont get that url download file after below, check the adblocker.
urls = Array.from(document.querySelectorAll(’.rg_di .rg_meta’)).map(el=>JSON.parse(el.textContent).ou);
window.open(‘data:text/csv;charset=utf-8,’ + escape(urls.join(’\n’)));
4 Likes
That’s the pretrained models. Here during inference, you’ll load your own model.
2 Likes
learn.be_patient()
19 Likes
I am interested, what is the right practice in fastiai, to load a set videos and sample e.g. every 3 second, to from a bunch series of images. So that I can apply Resnet34 (time-distributed) on each image and apply an LSTM on the next layer, for building a video classifier?
1 Like
For unbalanced data: What do you do if the class you care most about is a rare class. An example is identifying skin lesions where the most common benign class is way more frequent than melanoma?
2 Likes
This might be a slightly advanced thing, better to ask there, also there’s some discussion spread around here.
1 Like
I think ideally, we would have to balance the main data set we started with, shuffle the balanced data set and then get some validation/test sets out of the shuffled data set (instead of trying to balance only the train or validation set separately). That’s what I think intuitively - some expert can correct me if I am wrong.
Other than viability of convergence, Why does learning rate affect “accuracy”? It is just the rate of learning! it should just affect the time to train?
Anyone understand what this is doing?
x = torch.ones(n,2)
x[:,0].uniform_(-1.,1)
3 Likes
I guess if it’s too big, it will overshoot and completely miss the optima, thus affecting ‘accuracy’.
1 Like
Dot product is not matrix multiplication. The former is defined for vectors and is a completely different operation from the matrix multiplication. Dot product can be represented as matrix multiplication though.
torch.ones(100,2) creates a 100x2 matrix and x[:,0].uniform(-1.,1) makes the values follow an uniform distribution between -1 and +1
2 Likes
yeah, thats what i meant by saying 2 different learning rates which will find the minima, which one to choose?
Creating matrix [n,2] of ones and replacing the first dimension with random numbers [-1,1]
A matrix multiplication is a lot of dot products, it’s not a completely different operation.
4 Likes
I think it is making x an nx2 tensor (array), then setting the first column to be sampled from a uniform distribution on [-1, 1]
Right, but I don’t understand the x[:,0] syntax.
In that case I believe it’s just a matter of time…
1 Like
Specifically in the first column.