WebUI not support nested params visualization

[silverlining21]

I try the expample/trials/mnist-cascade-space/mnist.py got the problem.

any support plans？

BRs

[scarlett2018]

@silverlining21 - thanks for raising the issue, just added this to our backlog and would need more discussion on how to implement it in the future. If you have any suggestions on the design or would like to contribute directly that will be highly appreciated.

For now, @leelaylay - may you update the example, to let users know this feature is broken and under design.

[xuehui1991]

@silverlining21 @scarlett2018 For now, we don't support showing nested search space in WebUI. I update docs in this #1115.

[lvybriage]

estimate: 2d

[ultmaster]

Nested params is working for at least examples now.