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# Scorer

The `Scorer` task measures the accuracy of a speech recognition transcript (such as that generated by the `SpeechToText` task), when given a reference transcript file. The task reports scores for general word precision, recall, and the F-measure. You can choose the level of detail that the response includes.

## Parameters

Parameter | Description | Required
--- | --- | ---
Type | The task name. Set to `Scorer`. | Yes
CtmFile | The .ctm file that was produced by speech-to-text on the audio file. | Yes
Lang | The language pack to use as a foundation. |
MatchType | The alignment mode. |
Out | The .ctm file to write the ‘truth’ transcript including timestamps to. | Yes
ScoreBeam | The score-based beam-width value to use during dynamic programming alignment. |
ScoreFile | The file to write scores to. | Yes
ShowAlignment | Whether the score file includes a section containing line-by-line matching of the reference transcript with the speech-to-text transcript. |
ShowDetails | Whether to include detailed scoring information in the score file. |
TxtFile | The normalized reference transcript file. | Yes
WordBeam | The word region-based beam-width value to use during dynamic programming alignment. |

## Example

    http://localhost:15000/action=AddTask&Type=Scorer&TxtFile=C:\data\RefTranscript.txt&CtmFile=C:\misc\Stt.ctm&ScoreFile=score&Out=FinalTranscript.ctm

This action scores the `Stt.ctm` recognition transcript by comparing it to the `RefTranscript.txt` file. IDOL Speech Server writes the truth transcript containing timestamps to the `FinalTranscript.ctm` file and the scores to the `score.ctm` file.

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