UntiedConvLSTM: Error In Back-propagation about convlstm HOT 4 CLOSED

It seems to me the problem is coming from the fact that you are not specifying the batchsize. If you look in ConvLSTM (the parent of UntiedConvLSTM), the batchsize is set to nil by default. But for your input data, the batchsize should be explicitly set as 1. Hence use
convlstm = nn.UntiedConvLSTM(3,3,6,3,5,1,1)
Let me know if this helps.

from convlstm.

Thank you so much @viorik.
It works now.

I thought its not mandatory to specify batch-size, as in "model-demo-ConvLSTM.lua" UntiedConvLSTM was initialized without it.

net:add(nn.UntiedConvLSTM(opt.nFiltersMemory[1],opt.nFiltersMemory[2], opt.nSeq, opt.kernelSize, opt.kernelSizeMemory, opt.stride))

But again, I should have gone through constructor details of both novel layers.

from convlstm.

It was initialised without batchsize since the data in that demo is not structured in batches, so there indeed the batchsize is nil.

from convlstm.

Thanks again @viorik
Its clear now.

from convlstm.