code: def test_rmse_dense_loss_biased(self):
      model = TensorRec(loss_graph=RMSEDenseLossGraph(), biased=True)
      model.fit(
          self.interactions,
          self.user_features,
          self.item_features,
          epochs=5,
      )
  
file_path: tensorrec/test/test_loss_graphs.py
imports: from unittest import TestCase
  from tensorrec import TensorRec
  from tensorrec.loss_graphs import RMSELossGraph, RMSEDenseLossGraph, WMRBLossGraph, BalancedWMRBLossGraph
  from tensorrec.util import generate_dummy_data_with_indicator
label_desc: Use image node_id 5 for calling the LossGraphsTestCase obj's underlying member method code with example usage: obj.test_rmse_dense_loss_biased() without return types