# `IndicesSettingsSimilarity` [alias-IndicesSettingsSimilarity]
```typescript
type IndicesSettingsSimilarity = [IndicesSettingsSimilarityBm25](./IndicesSettingsSimilarityBm25.md) | [IndicesSettingsSimilarityBoolean](./IndicesSettingsSimilarityBoolean.md) | [IndicesSettingsSimilarityDfi](./IndicesSettingsSimilarityDfi.md) | [IndicesSettingsSimilarityDfr](./IndicesSettingsSimilarityDfr.md) | [IndicesSettingsSimilarityIb](./IndicesSettingsSimilarityIb.md) | [IndicesSettingsSimilarityLmd](./IndicesSettingsSimilarityLmd.md) | [IndicesSettingsSimilarityLmj](./IndicesSettingsSimilarityLmj.md) | [IndicesSettingsSimilarityScripted](./IndicesSettingsSimilarityScripted.md);
```