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# LanguageModelBuild

The `LanguageModelBuild` task builds a new language model from a set of text files.

## Parameters

Parameter | Description | Required
--- | --- | ---
Type | The task name. Set to `LanguageModelBuild`. | Yes
BaseDictionary | The base dictionary for the language model. |
DataList | The list of training text files. | Yes
DataPath | The path to the directory containing the training text files listed in DataList. | Yes
DoDctGen | Whether to generate a dictionary. |
DoNorm | Whether to perform text normalization. |
DoSmoothing | Whether to enable smoothing. |
DoSegment | Whether to segment text. |
DropList | A list of words to exclude from the vocabulary of the custom language model. |
KeepList | A list of words that must appear in the vocabulary of the custom language model. |
Lang | The language pack to use as a foundation. | Yes
Log | The name of the log file to write. |
NewLanguageModel | The custom language model to generate. | Yes
NewDictionary | The dictionary to generate. | Yes
VocabSize | The maximum size of the vocabulary to include in the custom language model. |

## Example

    http://localhost:13000/action=AddTask&Type=LanguageModelBuild&DataList=ListManager/Langmodel&DataPath=C:\LanguageModelFiles&Lang=ENUK-tel&NewLanguageModel=mymodel&NewDictionary=mymodel&DoSmoothing=False

This action uses port `13000` to instruct IDOL Speech Server, which is located on the local machine, to use the training text specified in the `Langmodel` list and the `ENUK-tel` language pack to build a new language model and dictionary file, both named `mymodel`. This action also calculates a recommended interpolation weight at the end of the language model building process.

Note: The interpolation weight is only a suggested weight–you can choose to set other weights.

The new language models are placed in the custom language models folder, as specified in the IDOL Speech Server configuration file.

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