code: public static JavaRDD<List<List<Writable>>> normalizeSequence(Schema schema, JavaRDD<List<List<Writable>>> data,
                      double min, double max) {
          return normalizeSequence(schema, data, min, max, null);
      }
docs: Normalize each column of a sequence, based on min/max
  
  @param schema Schema of the data
  @param data   Data to normalize
  @param min    New minimum value
  @param max    New maximum value
  @return Normalized data