code: def forward(self):
      pass
  
file_path: RecBole/recbole/model/general_recommender/nceplrec.py
imports: import torch
  import numpy
  import scipy.sparse
  from sklearn.utils.extmath import randomized_svd
  from recbole.model.abstract_recommender import GeneralRecommender
  from recbole.utils import InputType
label_desc: Use image node_id 2 for calling the NCEPLRec obj's underlying member method code with example usage: obj.forward() without return types