import cc.mallet.pipe.LineGroupString2TokenSequence; //导入依赖的package包/类
private SerialPipes buildSerialPipes(List<String> featureNames, List<String> replacements,
        List<String> conjunctions) throws LangDetectException, IOException {
    ArrayList<Pipe> pipes = new ArrayList<Pipe>();
    pipes.add(new LineGroupString2TokenSequence());
    pipes.add(new AddTargetToLinePipe(6));
    pipes.add(new LineToTargetTextPipe());
    pipes.add(new TargetReplacementPipe(replacements));

    FeaturePipeProvider featurePipeProvider = new FeaturePipeProvider();
    for (String featureName : featureNames) {
        pipes.add(featurePipeProvider.getPipe(featureName));
    }

    int[][] offsetConjunctions = new int[conjunctions.size()][];
    for (int i = 0; i < conjunctions.size(); i++) {
        String conjunction = conjunctions.get(i).replaceAll("min", "-");
        String[] conjunctionElements = conjunction.split(";");
        int[] conjunctionArray = new int[conjunctionElements.length];
        for (int j = 0; j < conjunctionElements.length; j++) {
            conjunctionArray[j] = Integer.parseInt(conjunctionElements[j]);
        }
        offsetConjunctions[i] = conjunctionArray;
    }
    pipes.add(new OffsetConjunctions(offsetConjunctions));

    pipes.add(new TokenSequence2FeatureVectorSequence(false, false));
    pipes.add(new Target2LabelSequence());

    // pipes.add(new PrintInputAndTarget());

    return new SerialPipes(pipes);

}