Missingness property of the SHAP

[cmougan]

I believe this property is also relevant if the feature has no relation with the target. E.g. a random feature.
Then the value will always be 0. No matter the coalition.

Perhaps I am mixing the Dummy properties of the Shapley values

interpretable-ml-book/manuscript/05.9b-agnostic-shap.Rmd

Line 74 in 90abf93

**2) Missingness**