# `QueryDslRankFeatureFunctionSigmoid` [interface-QueryDslRankFeatureFunctionSigmoid]

| Name | Type | Description |
| - | - | - |
| `exponent` | [float](./float.md) | Configurable Exponent. |
| `pivot` | [float](./float.md) | Configurable pivot value so that the result will be less than 0.5. |