---
metadata:
  - name: generator
    content: Diplodoc Platform v5.54.5
alternate:
  - https://catboost.ai/docs/en/concepts/python-efstr-type__desc.md
  - href: en/concepts/python-efstr-type__desc.md
    type: text/markdown
    title: Markdown version
  - href: ../llms.txt
    type: text/markdown
    title: llms.txt
---
> **Documentation Index:** Fetch the complete configuration index at https://catboost.ai/docs/en/llms.txt

# EFStrType

Enumeration with the list of supported [feature importance](https://catboost.ai/docs/en/concepts/fstr.md).

The following values are supported:
- FeatureImportance: Equal to [PredictionValuesChange](https://catboost.ai/docs/en/concepts/fstr.md#regular-feature-importance) for non-ranking metrics and [LossFunctionChange](https://catboost.ai/docs/en/concepts/fstr.md#regular-feature-importances__lossfunctionchange) for ranking metrics (the value is determined automatically).

- [ShapValues](https://catboost.ai/docs/en/concepts/shap-values.md): A vector $v$ with contributions of each feature to the prediction for every input object and the expected value of the model prediction for the object (average prediction given no knowledge about the object).
- [Interaction](https://catboost.ai/docs/en/concepts/feature-interaction.md#feature-interaction-strength): The value of the feature interaction strength for each pair of features.

- PredictionDiff: A vector with contributions of each feature to the RawFormulaVal difference for each pair of objects.