我建议手动从CSV文件中读取条目，从中创建NamedVectors，然后使用序列文件编写器将向量写入序列文件中.从那里开始，KMeansDriver运行方法应该知道如何处理这些文件.

I would recommend manually reading in the entries from the CSV file, creating NamedVectors from them, and then using a sequence file writer to write the vectors in a sequence file. From there on, the KMeansDriver run method should know how to handle these files.

序列文件编码键值对，因此键将是样本的ID(应为字符串)，并且值是向量周围的VectorWritable包装器.

Sequence files encode key-value pairs, so the key would be an ID of the sample (it should be a string), and the value is a VectorWritable wrapper around the vectors.

以下是有关如何执行此操作的简单代码示例:

Here is a simple code sample on how to do this:

    List<NamedVector> vector = new LinkedList<NamedVector>();
    NamedVector v1;
    v1 = new NamedVector(new DenseVector(new double[] {0.1, 0.2, 0.5}), "Item number one");
    vector.add(v1);

    Configuration config = new Configuration();
    FileSystem fs = FileSystem.get(config);

    Path path = new Path("datasamples/data");

    //write a SequenceFile form a Vector
    SequenceFile.Writer writer = new SequenceFile.Writer(fs, config, path, Text.class, VectorWritable.class);
    VectorWritable vec = new VectorWritable();
    for(NamedVector v:vector){
        vec.set(v);
        writer.append(new Text(v.getName()), v);
    }
    writer.close();

此外，我建议您阅读行动中的问题的第8章.它提供了有关Mahout中数据表示的更多详细信息.

Also, I would recommend reading chapter 8 of Mahout in Action. It gives more details on data representation in Mahout.