After a plow-contract change, a grit-bin model sees new truck IDs in the feed. After a new ice-treatment chemical, the same temperature-and-traffic row should now be called “treat” instead of “hold.” How should those two changes be labeled?
Select an answer to reveal the explanation.
Short Explanation
New truck IDs in the feed are a changed input mix, so that is data drift. The same temperature-and-traffic row that should now be called “treat” instead of “hold” is a changed meaning, so that is concept drift. Treating both as one phenomenon, or as underfitting, misses that split.
Full Explanation
Data drift is a change in the input mix. Concept drift is a change in what the same inputs should mean. Treating both as one phenomenon, or as underfitting, misses that distinction.