[Feature Request] Assertion operators

[jasonyu1996]

Hi! I personally would be happy to see assertion operators in MXNet. While they might seem useless for imperative computations (the NDArray API), I believe they are absolutely helpful for symbolic computation (the Symbol API), especially when implementing libraries (e.g., implementing a library function that takes as input some symbols and returns the result after performing several symbols), where the validity of the input should be checked. Tensorflow has these https://tensorflow.google.cn/api_guides/python/check_ops . It should be noted that in order to ensure that these assertions are executed, how to add them to the computational graph in order to make the output dependent on these assertions should be considered.

[vrakesh]

@jasonyu1996 thank you for the feature request .

@mxnet-label-bot [Feature request]

[eric-haibin-lin]

+1
@haojin2 @apeforest @samskalicky

[jasonyu1996]

It seems that I am not the only person who thinks this type of operators beneficial. Is anyone interested in implementing this? @haojin2 @apeforest @samskalicky

[jasonyu1996]

@eric-haibin-lin Hi! Do you think it is necessary to provide an interface for explicitly defining dependencies like this https://www.tensorflow.org/api_docs/python/tf/control_dependencies ?

[yemenr]

@jasonyu1996 Same question...

[jasonyu1996]

It seems that this is indeed a feature in need. Could you please provide some instructions on how this should be implemented? @haojin2 @apeforest @samskalicky