| Interface | Description | 
|---|---|
| DoccatEvaluationMonitor | EvaluationMonitorfor doccat. | 
| DocumentCategorizer | Interface for classes which categorize documents. | 
| FeatureGenerator | Interface for generating features for document categorization. | 
| Class | Description | 
|---|---|
| BagOfWordsFeatureGenerator | Generates a feature for each word in a document. | 
| DoccatCrossValidator | Cross validator for document categorization | 
| DoccatFactory | The factory that provides Doccat default implementations and resources | 
| DoccatModel | A model for document categorization | 
| DocumentCategorizerEvaluator | The  DocumentCategorizerEvaluatormeasures the performance of
 the givenDocumentCategorizerwith the provided referenceDocumentSamples. | 
| DocumentCategorizerEventStream | Iterator-like class for modeling document classification events. | 
| DocumentCategorizerME | Maxent implementation of  DocumentCategorizer. | 
| DocumentSample | Class which holds a classified document and its category. | 
| DocumentSampleStream | This class reads in string encoded training samples, parses them and
 outputs  DocumentSampleobjects. | 
| NGramFeatureGenerator | Generates ngram features for a document. | 
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