docstr: check that the error is in the same ballpark as LSQ.
docstr_tok: ["check","that","the","error","is","in","the","same","ballpark","as","LSQ","."]
code: def test_index_accuracy2(self):
      """check that the error is in the same ballpark as LSQ."""
      inter1 = self.eval_index_accuracy("IVF32,PLSQ2x2x5_Nqint8")
      inter2 = self.eval_index_accuracy("IVF32,LSQ4x5_Nqint8")
      # print(inter1, inter2)  # 381 vs 374
      self.assertGreaterEqual(inter1 * 1.1, inter2)
  
imports: import numpy
  import faiss
  import unittest
  from faiss.contrib import datasets
label_desc: Use image node_id 3 for calling the TestIndexIVFProductLocalSearchQuantizer obj's underlying member method code with example usage: obj.test_index_accuracy2() without return types