scikit-learn__scikit-learn-25931

X does not have valid feature names, but IsolationForest was fitted with feature names

Verdict: the fix is stated in the issue (Tier A).

To summarise the idea would be to: - add a `_scores_sample` method without validation - have `scores_sample` validate the data and then call `_scores_sample` - call `_scores_sample` at the end of `.fit`

The text states the fix: “To summarise the idea would be to: - add a `_scores_sample` method without validation - have `scores_sample` validate the data and then call `_scores_sample` - call `_sc…”

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