Get the sigma value for regression types

# SVMModel::getSvrProbability

(PECL svm >= 0.1.5)

SVMModel::getSvrProbability — Get the sigma value for regression types

### 说明

public function SVMModel::getSvrProbability(): float

For regression models, returns a sigma value. If there is no probability information or the model is not SVR, 0 is returned.

### 参数

此函数没有参数。

### 返回值

Returns a sigma value

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