Class SimpleNaiveBayesClassifier

A simplistic Lucene based NaiveBayes classifier, see

http://en.wikipedia.org/wiki/Naive_Bayes_classifier

Note

This API is experimental and might change in incompatible ways in the next release.

Inheritance

System.Object

SimpleNaiveBayesClassifier

Implements

IClassifier<Lucene.Net.Util.BytesRef>

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: Lucene.Net.Classification

Assembly: Lucene.Net.Classification.dll

Syntax

public class SimpleNaiveBayesClassifier : IClassifier<BytesRef>

Constructors

SimpleNaiveBayesClassifier()

Creates a new NaiveBayes classifier. Note that you must call Train(AtomicReader, String, String, Analyzer) before you can classify any documents.

Declaration

public SimpleNaiveBayesClassifier()

Methods

AssignClass(String)

Assign a class (with score) to the given text string

Declaration

public virtual ClassificationResult<BytesRef> AssignClass(string inputDocument)

Parameters

Type	Name	Description
System.String	inputDocument	a string containing text to be classified

Returns

Type	Description
ClassificationResult<Lucene.Net.Util.BytesRef>	a ClassificationResult<T> holding assigned class of type Lucene.Net.Util.BytesRef and score

Train(AtomicReader, String, String, Analyzer)

Train the classifier using the underlying Lucene index

Declaration

public virtual void Train(AtomicReader atomicReader, string textFieldName, string classFieldName, Analyzer analyzer)

Parameters

Type	Name	Description
Lucene.Net.Index.AtomicReader	atomicReader	the reader to use to access the Lucene index
System.String	textFieldName	the name of the field used to compare documents
System.String	classFieldName	the name of the field containing the class assigned to documents
Lucene.Net.Analysis.Analyzer	analyzer	the analyzer used to tokenize / filter the unseen text

Train(AtomicReader, String, String, Analyzer, Query)

Train the classifier using the underlying Lucene index

Declaration

public virtual void Train(AtomicReader atomicReader, string textFieldName, string classFieldName, Analyzer analyzer, Query query)

Parameters

Type	Name	Description
Lucene.Net.Index.AtomicReader	atomicReader	the reader to use to access the Lucene index
System.String	textFieldName	the name of the field used to compare documents
System.String	classFieldName	the name of the field containing the class assigned to documents
Lucene.Net.Analysis.Analyzer	analyzer	the analyzer used to tokenize / filter the unseen text
Lucene.Net.Search.Query	query	the query to filter which documents use for training

Train(AtomicReader, String[], String, Analyzer, Query)

Train the classifier using the underlying Lucene index

Declaration

public virtual void Train(AtomicReader atomicReader, string[] textFieldNames, string classFieldName, Analyzer analyzer, Query query)

Parameters

Type	Name	Description
Lucene.Net.Index.AtomicReader	atomicReader	the reader to use to access the Lucene index
System.String[]	textFieldNames	the names of the fields to be used to compare documents
System.String	classFieldName	the name of the field containing the class assigned to documents
Lucene.Net.Analysis.Analyzer	analyzer	the analyzer used to tokenize / filter the unseen text
Lucene.Net.Search.Query	query	the query to filter which documents use for training

Implements

IClassifier<T>