class_docstr: An e-mail communication network of a large European research
  institution, taken from the `"Local Higher-order Graph Clustering"
  <https://www-cs.stanford.edu/~jure/pubs/mappr-kdd17.pdf>`_ paper.
  Nodes indicate members of the institution.
  An edge between a pair of members indicates that they exchanged at least
  one email.
  Node labels indicate membership to one of the 42 departments.
  
  Args:
      root (str): Root directory where the dataset should be saved.
      transform (callable, optional): A function/transform that takes in an
          :obj:`torch_geometric.data.Data` object and returns a transformed
          version. The data object will be transformed before every access.
          (default: :obj:`None`)
      pre_transform (callable, optional): A function/transform that takes in
          an :obj:`torch_geometric.data.Data` object and returns a
          transformed version. The data object will be transformed before
          being saved to disk. (default: :obj:`None`)
      force_reload (bool, optional): Whether to re-process the dataset.
          (default: :obj:`False`)
class_docstr_tok: ["An","e-mail","communication","network","of","a","large","European","research","institution",",","taken","from","the","`","``","Local","Higher-order","Graph","Clustering","''","<","https",":","\/\/www-cs.stanford.edu\/~jure\/pubs\/mappr-kdd17.pdf",">","`","_","paper",".","Nodes","indicate","members","of","the","institution",".","An","edge","between","a","pair","of","members","indicates","that","they","exchanged","at","least","one","email",".","Node","labels","indicate","membership","to","one","of","the","42","departments",".","Args",":","root","(","str",")",":","Root","directory","where","the","dataset","should","be","saved",".","transform","(","callable",",","optional",")",":","A","function\/transform","that","takes","in","an",":","obj",":","`","torch_geometric.data.Data","`","object","and","returns","a","transformed","version",".","The","data","object","will","be","transformed","before","every","access",".","(","default",":",":","obj",":","`","None","`",")","pre_transform","(","callable",",","optional",")",":","A","function\/transform","that","takes","in","an",":","obj",":","`","torch_geometric.data.Data","`","object","and","returns","a","transformed","version",".","The","data","object","will","be","transformed","before","being","saved","to","disk",".","(","default",":",":","obj",":","`","None","`",")","force_reload","(","bool",",","optional",")",":","Whether","to","re-process","the","dataset",".","(","default",":",":","obj",":","`","False","`",")"]
code: def raw_file_names(self) -> List[str]:
      return [
          "email-Eu-core.txt",
          "email-Eu-core-department-labels.txt",
      ]
  
file_path: pytorch_geometric/torch_geometric/datasets/email_eu_core.py
imports: import os
  from typing import Callable, List, Optional
  import torch
  from torch_geometric.data import Data, InMemoryDataset, download_url, extract_gz
label_desc: Use image node_id 2 for calling the EmailEUCore obj's underlying member method code with example usage: obj.raw_file_names() and returns: list