Louis Popi

Support for pandas dataframes in workflows

1

Currently, the [`Classifier`](https://github.com/paris-saclay-cds/ramp-workflow/blob/3b71b62c2639effc4de40fa1cc3f46446ee5cf0c/rampwf/workflows/classifier.py) and [`Regressor`](https://github.com/paris-saclay-cds/ramp-workflow/blob/3b71b62c2639effc4de40fa1cc3f46446ee5cf0c/rampwf/workflows/regressor.py) workflows don't accept pandas dataframes as inputs. Indeed in `train_submission` the arrays are being indexed with slices which selects columns instead of rows leading to...

In your notebook, you follow the [official pytorc_geometric tutorial](https://pytorch-geometric.readthedocs.io/en/latest/notes/introduction.html) regarding the GNN but you wrongly copy-pasted the `weight_decay` for the optimizer. Indeed `weight_decay=5e-3` is very big and should be reduced...