/**
* Combine bias data from small files to a integrated file
*
* @param conf
* @param pathName
* @param outName
* @throws IOException
*/
public static void extractBias(Configuration conf, String pathName, String outName, int n)
throws IOException {
List<String> resList = DataOperators.readTextFromHDFS(conf, pathName);
DenseDoubleMatrix1D vBias = new DenseDoubleMatrix1D(n);
for (String line : resList) {
String[] items = line.split("\t");
vBias.set(Integer.parseInt(items[0]), Double.parseDouble(items[1]));
}
MatrixIO.saveDenseMatrix1D2HDFS(conf, outName, vBias, true);
}
