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https://issues.apache.org/jira/browse/MXNET-40?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16389326#comment-16389326
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Kan Wu commented on MXNET-40:
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PR: https://github.com/apache/incubator-mxnet/pull/9939
> add multi proposal operator (cpu version) and fix the bug in proposal op (gpu
> version)
> --------------------------------------------------------------------------------------
>
> Key: MXNET-40
> URL: https://issues.apache.org/jira/browse/MXNET-40
> Project: Apache MXNet
> Issue Type: Improvement
> Reporter: Kan Wu
> Assignee: Chris Olivier
> Priority: Major
>
> The multi_proposal operator ({{mxnet.sym.contrib.MultiProposal}}, CPU
> version) is not implemented before.
> I wrote the code about it.
> And I found there was a bug in _proposal.cu_ and _multi_proposal.cu_.
> The {{batch_size}} of the output of _Proposal_ and _MultiProposal_ are both
> {{param_.rpn_post_nms_top_n}}.
> When {{count_anchors < param_.rpn_post_nms_top_n}}, the variable
> {{rpn_post_nms_top_n}} will be {{count_anchors}}, which is less than
> {{param_.rpn_post_nms_top_n}}.
> [https://github.com/apache/incubator-mxnet/blob/master/src/operator/contrib/proposal.cu#L438]
> It will cause the problem that the output whose index is larger than
> {{rpn_post_nms_top_n}} will be _not assigned_.
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