[GitHub] eric-haibin-lin commented on issue #9211: mx.io.NDArrayIter with scipy.sparse, last batch becomes dense and with no warning upfront

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eric-haibin-lin commented on issue #9211: mx.io.NDArrayIter with scipy.sparse, last batch becomes dense and with no warning upfront
URL: https://github.com/apache/incubator-mxnet/issues/9211#issuecomment-354403029
 
 
   Thanks for reporting this. 
   Supporting `last_batch_handle ` options other than `discard` with sparse matrix is on the TODO list. We'll support it after MKL concat operator is merged so that it properly returns a sparse matrix. For now probably we should add the missing error message 
   @ZiyueHuang 

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