# LabelFile

The location and name of the Passage Extractor classifier label file. This parameter applies only when Type is set to `PassageExtractor`.

Answer Server uses the classifier and label files to save the trained question classifiers. The question classifiers describe the types of different questions, and therefore what entities (if any) to extract from candidate answers.

At startup, the question classifier uses the label file at this location, if it exists, or it saves the trained classifier resources to this location.

The question classifier is required. If you do not set `LabelFile`, you cannot save the question classifier, and must retrain one each time you restart Answer Server. To save the classifier, you must also set ClassifierFile.

Type: | String
Default: |
Required: | No
Configuration Section: | MySystem
Example: | `LabelFile=./passageextractor/classifiertraining/labels_en.dat`
See Also: | ClassifierFile

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