Maths for ML / Notation

∖\setminus

set difference

SetsBeginner

Say it “minus / without”

Elements in the first set that are not in the second.

Example

D∖DvalD \setminus D_{\text{val}}

The data left after removing the validation split.

In code

A - B

Where you’ll see it in ML

Train/validation/test splits.

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