class_docstr: The original dataset is available at: http://corpus-texmex.irisa.fr/
  (ANN_SIFT1B)
class_docstr_tok: ["The","original","dataset","is","available","at",":","http",":","\/\/corpus-texmex.irisa.fr\/","(","ANN_SIFT1B",")"]
code: def get_queries(self):
      return sanitize(
          bvecs_mmap(self.basedir + "bigann_query.bvecs")[:]
      )
  
imports: import os
  import numpy
  import faiss
  from .vecs_io import fvecs_read, ivecs_read, bvecs_mmap, fvecs_mmap
  from .exhaustive_search import knn
label_desc: Use image node_id 2 for calling the DatasetBigANN obj's underlying member method code with example usage: obj.get_queries() and returns: sanitize