Julius Kittler

Framework for Model Selection

2

**What I would you like to be added**: It would be great if NNI had an *extension/framework for model selection*. **Why is this needed**: Model selection is a very relevant...

[BUG] Cannot provide controls u for cross validation with scikit-learn

10

When you provide a control variable `u` to fit SINDy with cross validation from scikit-learn, there is an error: `TypeError: Model was fit using control variables, so u is required`....

**Problem** It seems that currently, I can't provide an `initGrid` consisting of a data frame with only 1 row. The `inBounds

Tutorial episode 6 does not work in AWS because of MetaflowS3URLException

1

I was able to successfully run episode 5 with the [Sandbox environment](https://metaflow.org/sandbox) provided by the metaflow team. However, when I run episode 6, the "start" step fails with the following...

[question] Specify a prior over action distribution?

4

This is a question/feature request for policy gradient based methods (e.g. A2C). Is it possible to specify a prior for the policy before training? For instance, if I have 3...

Reverse sign in TD-error of DQN

4

This is a little detail. I suggest to change the computation of the TD-error from `td_error = q_t_selected - tf.stop_gradient(q_t_selected_target)` to `td_error = tf.stop_gradient(q_t_selected_target) - q_t_selected` in https://github.com/hill-a/stable-baselines/blob/master/stable_baselines/deepq/build_graph.py I think...

Option to modify background color for message?

1

Are you planning to modify the background color for the message, so that a different color can be used for the user and the bot? This would be a nice...

Thanks a lot for the component, I really like it so far and it works very well for plain text. **Currently**, when the text is formatted as Markdown or as...