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# LangIdOptimize

The `LangIdOptimize` task optimizes the balance between language classifiers. After training, some classifiers might be stronger than others because of properties of the training material and the languages in question. The optimization process weights the language models so that weaker languages have increased accuracy, without compromising accuracy for stronger language models. This process improves consistent performance.

## Parameters

Parameter | Description | Required
--- | --- | ---
Type | The task type. Set to `LangIdOptimize`. | Yes
ChunkSize | The size in seconds of each chunk of audio. |
ClassList | A list of language classifiers. |
ClassPath | The path to the directory containing the language classifiers. |
DataList | A list of language feature files. | Yes
DataPath | The path to the directory containing the language feature files listed in the DataList. | Yes
LangList | A subset of languages to use from the classifier list file. |
Log | The name of the log file to write. |
Out | The classifier list to write the optimized weights to. | Yes

NOTE:

The `ClassList` parameter is required only if you want to change the audio sample rate, or if you want to use your own custom classifiers. You might also need to specify the `ClassPath` parameter, depending on the location of the classifier files.

## Example

    http://localhost:15000/action=AddTask&Type=LangIdOptimize&DataList=ListManager/OptList&DataPath=C:\LangID\Data&ClassList=ListManager/ClassList&ClassPath=C:\LangID\class&Out=ListManager/OptClassSet

This action tests the feature files listed in the `OptList` list against the classifiers specified in the `ClassList` list and then generate an updated classifier list–`OptClassSet`.

The `LangIdOptimize` action generates a log file containing information about the optimization process. For details about this log file, see the IDOL Speech Server Administration Guide.

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