docstr: Initialize model 
docstr_tok: ["Initialize","model"]
code: def _initialize(self):
      """Initialize model"""
      self.model = GraphSAINTMultiOrderAggregationModel(
          self.num_features,
          self.num_classes,
          self.hyper_parameter.get("output_dimension_for_each_order"),
          self.hyper_parameter.get("layers_order_list"),
          self.hyper_parameter.get("pre_dropout"),
          self.hyper_parameter.get("layers_dropout"),
          self.hyper_parameter.get("activation", "ReLU"),
          bool(self.hyper_parameter.get("bias", True)),
          bool(self.hyper_parameter.get("batch_norm", True)),
          bool(self.hyper_parameter.get("normalize", True)),
      ).to(self.device)
  
file_path: AutoGL/autogl/module/model/pyg/graph_saint.py
imports: import typing
  import torch.nn.functional
  from torch_geometric.nn.conv import MessagePassing
  from torch_sparse import SparseTensor, matmul
  from .None import register_model
  from .base import ClassificationModel, ClassificationSupportedSequentialModel
label_desc: Use image node_id 2 for calling the GraphSAINTAggregationModel obj's underlying member method code with example usage: obj._initialize() without return types