net.sf.classifier4J
Class Utilities

java.lang.Object
  |
  +--net.sf.classifier4J.Utilities

public class Utilities

extends java.lang.Object

Author:

Nick Lothian, Peter Leschev

Constructor Summary

Utilities()

Method Summary

static int	countWords(java.lang.String word, java.lang.String[] words) Count how many times a word appears in an array of words
static java.util.Set	getMostFrequentWords(int count, java.util.Map wordFrequencies)
static java.lang.String[]	getSentences(java.lang.String input)
static java.lang.String	getString(java.io.InputStream is) Given an inputStream, this method returns a String.
static java.lang.String[]	getUniqueWords(java.lang.String[] input) Find all unique words in an array of words
static java.util.Map	getWordFrequency(java.lang.String input)
static java.util.Map	getWordFrequency(java.lang.String input, boolean caseSensitive)
static java.util.Map	getWordFrequency(java.lang.String input, boolean caseSensitive, ITokenizer tokenizer, IStopWordProvider stopWordsProvider) Get a Map of words and Integer representing the number of each word

Methods inherited from class java.lang.Object

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

Constructor Detail

Utilities

public Utilities()

Method Detail

getWordFrequency

public static java.util.Map getWordFrequency(java.lang.String input)

getWordFrequency

public static java.util.Map getWordFrequency(java.lang.String input,
                                             boolean caseSensitive)

getWordFrequency

public static java.util.Map getWordFrequency(java.lang.String input,
                                             boolean caseSensitive,
                                             ITokenizer tokenizer,
                                             IStopWordProvider stopWordsProvider)

Get a Map of words and Integer representing the number of each word

Parameters:

input - The String to get the word frequency of

caseSensitive - true if words should be treated as separate if they have different case

tokenizer - a junit.framework.TestCase#run()

stopWordsProvider -

Returns:

getMostFrequentWords

public static java.util.Set getMostFrequentWords(int count,
                                                 java.util.Map wordFrequencies)

getUniqueWords

public static java.lang.String[] getUniqueWords(java.lang.String[] input)

Find all unique words in an array of words

Parameters:

input - an array of Strings

Returns:

an array of all unique strings. Order is not guarenteed

countWords

public static int countWords(java.lang.String word,
                             java.lang.String[] words)

Count how many times a word appears in an array of words

Parameters:

word - The word to count

words - non-null array of words

getSentences

public static java.lang.String[] getSentences(java.lang.String input)

Parameters:

input - a String which may contain many sentences

Returns:

an array of Strings, each element containing a sentence

getString

public static java.lang.String getString(java.io.InputStream is)
                                  throws java.io.IOException

Given an inputStream, this method returns a String. New lines are replaced with " "

java.io.IOException