private void createRightFile(String kNNResultFile, String kNNRightFile) throws IOException {
		// TODO Auto-generated method stub
		String rightCate;
		FileReader fileR = new FileReader(kNNResultFile);
		FileWriter KNNRrightResult = new FileWriter(new File(kNNRightFile));
		BufferedReader fileBR = new BufferedReader(fileR);
		String line;
		String lineBlock[];
		while((line = fileBR.readLine()) != null){
			lineBlock = line.split(" ");
			rightCate = lineBlock[0].split("_")[0];
			KNNRrightResult.append(lineBlock[0]+" "+rightCate+"\n");
		}
		KNNRrightResult.flush();
		KNNRrightResult.close();
	}