org.apache.mahout.vectorizer

Class DocumentProcessor

java.lang.Object

org.apache.mahout.vectorizer.DocumentProcessor

public final class DocumentProcessor
extends Object

This class converts a set of input documents in the sequence file format of StringTuples.The SequenceFile input should have a Text key containing the unique document identifier and a Text value containing the whole document. The document should be stored in UTF-8 encoding which is recognizable by hadoop. It uses the given Analyzer to process the document into Tokens.

Field Summary

Fields

Modifier and Type	Field and Description
static String	ANALYZER_CLASS
static String	TOKENIZED_DOCUMENT_OUTPUT_FOLDER

Method Summary

Methods

Modifier and Type	Method and Description
static void	tokenizeDocuments(org.apache.hadoop.fs.Path input, Class<? extends org.apache.lucene.analysis.Analyzer> analyzerClass, org.apache.hadoop.fs.Path output, org.apache.hadoop.conf.Configuration baseConf) Convert the input documents into token array using the StringTuple The input documents has to be in the SequenceFile format

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TOKENIZED_DOCUMENT_OUTPUT_FOLDER

public static final String TOKENIZED_DOCUMENT_OUTPUT_FOLDER

See Also:

Constant Field Values

ANALYZER_CLASS

public static final String ANALYZER_CLASS

See Also:

Constant Field Values

Method Detail

tokenizeDocuments

public static void tokenizeDocuments(org.apache.hadoop.fs.Path input,
                     Class<? extends org.apache.lucene.analysis.Analyzer> analyzerClass,
                     org.apache.hadoop.fs.Path output,
                     org.apache.hadoop.conf.Configuration baseConf)
                              throws IOException,
                                     InterruptedException,
                                     ClassNotFoundException

Convert the input documents into token array using the StringTuple The input documents has to be in the SequenceFile format

Parameters:

input - input directory of the documents in SequenceFile format

output - output directory were the StringTuple token array of each document has to be created

analyzerClass - The Lucene Analyzer for tokenizing the UTF-8 text

Throws:

IOException

InterruptedException

ClassNotFoundException