What is the fast.ai friendly data format for multi-label classification?

Part 2 & Alumni (2018)
1

Is it to put labels in a single DataFrame column with a space in between (e.g., "1 1 0 1 0") … or is it better to create custom Dataset / DataLoader classes that uses a DataFrame column for each class?

2

Is this for image classification?

3

No. It’s for structured data.