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PyramidVig

class mmpretrain.models.backbones.PyramidVig(arch, in_channels=3, k=9, out_indices=-1, act_cfg={'type': 'GELU'}, norm_cfg={'type': 'BN'}, graph_conv_bias=True, graph_conv_type='mr', epsilon=0.2, use_stochastic=False, drop_path=0.0, norm_eval=False, frozen_stages=0, init_cfg=None)[source]

Pyramid Vision GNN backbone.

A PyTorch implementation of Vision GNN: An Image is Worth Graph of Nodes.

Modified from the official implementation https://github.com/huawei-noah/Efficient-AI-Backbones/tree/master/vig_pytorch

Parameters:
  • arch (str) – Vision GNN architecture, choose from ‘tiny’, ‘small’ and ‘base’.

  • in_channels (int) – The number of channels of input images. Defaults to 3.

  • k (int) – The number of KNN’s k. Defaults to 9.

  • out_indices (Sequence | int) – Output from which stages. Defaults to -1, means the last stage.

  • act_cfg (dict) – The config of activative functions. Defaults to dict(type='GELU')).

  • norm_cfg (dict) – The config of normalization layers. Defaults to dict(type='BN').

  • graph_conv_bias (bool) – Whether to use bias in the convolution layers in Grapher. Defaults to True.

  • graph_conv_type (str) – The type of graph convolution,choose from ‘edge’, ‘mr’, ‘sage’ and ‘gin’. Defaults to ‘mr’.

  • epsilon (float) – Probability of random arrangement in KNN. It only works when use_stochastic=True. Defaults to 0.2.

  • use_stochastic (bool) – Whether to use stochastic in KNN. Defaults to False.

  • drop_path (float) – stochastic depth rate. Default 0.0

  • norm_eval (bool) – Whether to set the normalization layer to eval mode. Defaults to False.

  • frozen_stages (int) – Stages to be frozen (all param fixed). Defaults to 0, which means not freezing any parameters.

  • init_cfg (dict, optional) – The initialization configs. Defaults to None.