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DL4J: EmbeddingSequenceLayer: no gradient checks, mask support wrong #5778

AlexDBlack opened this issue Jul 3, 2018 · 1 comment


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commented Jul 3, 2018

When using mask arrays with EmbeddingSequenceLayer:

java.lang.IllegalStateException: Mismatched shapes (shape = [3, 4, 6], column vector shape =[3, 6])
	at org.nd4j.linalg.api.ndarray.BaseNDArray.doColumnWise(
	at org.nd4j.linalg.api.ndarray.BaseNDArray.muliColumnVector(
	at org.deeplearning4j.nn.layers.feedforward.embedding.EmbeddingSequenceLayer.activate(

Also - I found out that there were no gradient checks for this layer :(

@AlexDBlack AlexDBlack added the Bug label Jul 3, 2018

@AlexDBlack AlexDBlack added this to the DL4J/Arbiter/DataVec Next Steps milestone Jul 3, 2018

@AlexDBlack AlexDBlack changed the title DL4J: SequenceEmbeddingLayer: no gradient checks, mask support wrong DL4J: EmbeddingSequenceLayer: no gradient checks, mask support wrong Jul 3, 2018

@maxpumperla maxpumperla self-assigned this Jul 3, 2018

AlexDBlack added a commit that referenced this issue Jul 3, 2018
DL4J Various Fixes (#5766)
* #5713 Fix incorrectly not used FF arg

* #5687 Add getLearningRate methods

* #5704 Fix bug in RddMiniBatches

* #5297 Fix serialization message spam when loading LONG type buffers

* #5420 Fix issue from class initialization order

* #5356 Add property to disable ND4J logging initialization (mainly for tests)

* #5778 Add EmbeddingSequenceLayer gradient checks, fix mask support

* Fix EmbeddingSequenceLayer (now passes gradient checks) + extra test for masking correctness

* #5777 add ND4J RNG convenience methods

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commented Sep 21, 2018

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

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