code: def eval_intersection_measure(gt_I, I):
      """measure intersection measure (used for knngraph)"""
      inter = 0
      rank = I.shape[1]
      assert gt_I.shape[1] >= rank
      for q in range(nq_gt):
          inter += faiss.ranklist_intersection_size(
              rank,
              faiss.swig_ptr(gt_I[q, :]),
              rank,
              faiss.swig_ptr(I[q, :].astype("int64")),
          )
      return inter / float(rank * nq_gt)
  
imports: from __future__ import print_function
  import numpy
  import time
  import os
  import sys
  import faiss
  import re
  from multiprocessing.pool import ThreadPool
  from datasets import ivecs_read
label_desc: Use image node_id 7 for calling a global function with example usage: eval_intersection_measure(gt_I, I) and returns: unknown