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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2020/03/31 08:10:00 UTC
[GitHub] [incubator-mxnet] John1231983 opened a new issue #17944: How to
split symbol?
John1231983 opened a new issue #17944: How to split symbol?
URL: https://github.com/apache/incubator-mxnet/issues/17944
I have a symbol that is created by concat between `data` and `seg` at `dim=1`
```
data with shape of 64x3x224x224
seg with shpe of 64x1x224x224
```
Hence, the symbol has size of `64x4x224x224`. I want to split the symbol back to data and seg. How can I do it? This is what I did
```
data_seg = mx.symbol.split(data=data_seg, axis=1, num_outputs=2)
data = data_seg [0]
seg = data_seg [1]
```
However, the shape of data and seg result in `64x2x224x224` instead of `64x3x224x224` and `64x1x224x224`, respectively.
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[GitHub] [incubator-mxnet] lilongyue commented on issue #17944: How to split
symbol?
Posted by GitBox <gi...@apache.org>.
lilongyue commented on issue #17944: How to split symbol?
URL: https://github.com/apache/incubator-mxnet/issues/17944#issuecomment-606506860
you can use 'split_v2' function to solve this ! below is a ndarray version to your case.
symbolic operator should be the same
##########################
import mxnet.ndarray as nd
input=nd.random.uniform(shape=[64,4,224,224])
output=input.split_v2((3,4),1)
print(input.shape)
print('------')
print(output[0].shape)
print(output[1].shape)
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[GitHub] [incubator-mxnet] John1231983 commented on issue #17944: How to
split symbol?
Posted by GitBox <gi...@apache.org>.
John1231983 commented on issue #17944: How to split symbol?
URL: https://github.com/apache/incubator-mxnet/issues/17944#issuecomment-607029117
@lilongyue it does not work for symbol.
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[GitHub] [incubator-mxnet] shuokay commented on issue #17944: How to split
symbol?
Posted by GitBox <gi...@apache.org>.
shuokay commented on issue #17944: How to split symbol?
URL: https://github.com/apache/incubator-mxnet/issues/17944#issuecomment-610693985
I think `mx.sym.slice` is what you need.
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[GitHub] [incubator-mxnet] John1231983 commented on issue #17944: How to
split symbol?
Posted by GitBox <gi...@apache.org>.
John1231983 commented on issue #17944: How to split symbol?
URL: https://github.com/apache/incubator-mxnet/issues/17944#issuecomment-606512387
Thanks. Please check it because it has some error
>mxnet.base.MXNetError: [16:36:59] src/operator/tensor/./matrix_op-inl.h:2634: Check failed: start < end: start 4 is not less than end 4for subarray 2 Stack
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