class_docstr: Efficient index for retrieval. Note: default settings are for hugh accuracy but also high RAM usage
class_docstr_tok: ["Efficient","index","for","retrieval",".","Note",":","default","settings","are","for","hugh","accuracy","but","also","high","RAM","usage"]
code: def deserialize_from(self, file: str):
      super(DenseHNSWFlatIndexer, self).deserialize_from(file)
      # to trigger warning on subsequent indexing
      self.phi = 1
  
imports: import os
  import logging
  import pickle
  import faiss
  import numpy
label_desc: Use image node_id 4 for calling the DenseHNSWFlatIndexer obj's underlying member method code with example usage: obj.deserialize_from(file) without return types