code: def gen_file_name(idx, dimension, data_type):
      s = "%05d" % idx
      fname = FILE_PREFIX + str(dimension) + "d_" + s + ".npy"
      if data_type == "random":
          fname = RANDOM_SRC_DATA_DIR + fname
      elif data_type == "sift":
          fname = SIFT_SRC_DATA_DIR + fname
      elif data_type == "deep":
          fname = DEEP_SRC_DATA_DIR + fname
      elif data_type == "jaccard":
          fname = JACCARD_SRC_DATA_DIR + fname
      elif data_type == "hamming":
          fname = HAMMING_SRC_DATA_DIR + fname
      elif data_type == "sub" or data_type == "super":
          fname = STRUCTURE_SRC_DATA_DIR + fname
      return fname
  
imports: import os
  import logging
  import numpy
  import sklearn.preprocessing
  import h5py
  import random
  from itertools import product
  from pymilvus import DataType
  from milvus_benchmark import config
label_desc: Use image node_id 13 for calling a global function with example usage: gen_file_name(idx, dimension, data_type) and returns: fname