hex.tfidf

Class DocumentFrequencyTask

java.lang.Object

hex.tfidf.DocumentFrequencyTask

public class DocumentFrequencyTask
extends java.lang.Object

Task class using map-reduce to compute document frequency values for words in given documents.

Constructor Summary

Constructors

Constructor and Description
DocumentFrequencyTask()

Method Summary

Modifier and Type	Method and Description
static Frame	compute(Frame wordFrame) Computes document frequency values for given words in documents.

Methods inherited from class java.lang.Object

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

Constructor Detail

DocumentFrequencyTask

public DocumentFrequencyTask()

Method Detail

compute

public static Frame compute(Frame wordFrame)

Computes document frequency values for given words in documents.

Parameters:

wordFrame - input frame of unique words (unique per document) for which document frequency values should be computed. Expected row format: docID, word

Returns:

frame containing document frequency values for given words.