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# BuildObjectClassRecognizer

Trains a recognizer so that it can be used for object class recognition.

For more information about how to train object class recognition, refer to the Media Server Administration Guide.

Type: asynchronous

Parameter | Description | Required
--- | --- | ---
`recognizer` | The name of the recognizer that you want to train. | Yes

## Example

    /action=BuildObjectClassRecognizer&recognizer=vehicles

## Response

This action is asynchronous, so Media Server always returns success accompanied by a token.

You can use this token with the QueueInfo action to retrieve the status of the action.

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