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# ThresholdScale

A scale value to apply to the language identification task. This option has an effect only when you set ClosedSet to `False`.

In open set language identification, IDOL Speech Server identifies the most likely language from a specified set of language classifiers, and assesses the confidence score that the audio matches this language. If the confidence score is below a particular threshold, IDOL Speech Server returns the identified language as unknown.

You can modify the value of `ThresholdScale` to raise or lower the threshold that IDOL Speech Server uses to identify languages. This value scales the thresholds that IDOL Speech Server uses. It does not represent an absolute threshold score.

Type: | String
Default: | 1.0
Range: | Minimum: 0.5 Maximum: 2.0
Required: | No
Configuration Section: | langid module
Example: | `ThresholdScale=1.5`
See Also: | ClosedSet MaxThresh MinThresh

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