Add the model CDSA

[wx0chan]

1. Model description

CDSA: cross-dimensional self-attention
https://arxiv.org/abs/1905.09904

2. Check open-source status

• The model implementation is publicly available

3. Provide useful information for the implementation

Reproduced with reference to the original paper.

[WenjieDu]

Hi there 👋,

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Wenjie

[WenjieDu]

The official code repo with incomplete implementation in TF https://github.com/ICLR-Submission/cross-dimensional-attention (according to the info on the submission page https://openreview.net/forum?id=SJxRKT4Fwr)

An unofficial implementation in TF https://github.com/Gabriel-Macias/cdsa_imputation