Java code implementation of information gain
2018-07-13
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import java.io.BufferedReader ;import java.io.BufferedWriter ;import java.io.File ;import java.io.FileInputStream ;import java.io.FileNotFoundException ;import java.io.FileOutputStream ;import java.io.InputStreamReader ;import java.io.OutputStreamWriter ;import java.io.UnsupportedEncodingException ;import java.util .*;public class FSInformationGain2 {//< Private static map & lt; string, list & gt; catetodoc = new HashMap & lt; string, list & gt; (); / / dictionary private static set words = new hashset(); private static int document_ Count = 0; / / & lt; words, the total number of occurrences in the corpus & gt; private static map worddf = new hashmap(); / / & lt; directory, & lt; words, the total number of occurrences in the directory & gt; & gt; private static map & lt; string, map & gt; categorywordmap = New & nbsp; HashMap & lt; string, map & gt; (); public void SC
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