DenseSAGEConv

class dgl.nn.mxnet.conv.DenseSAGEConv(in_feats, out_feats, feat_drop=0.0, bias=True, norm=None, activation=None)

Bases: mxnet.gluon.block.Block

GraphSAGE layer from Inductive Representation Learning on Large Graphs

We recommend to use this module when appying GraphSAGE on dense graphs.

Note that we only support gcn aggregator in DenseSAGEConv.

Parameters

• in_feats (int) – Input feature size; i.e, the number of dimensions of \(h_i^{(l)}\).

• out_feats (int) – Output feature size; i.e, the number of dimensions of \(h_i^{(l+1)}\).

• feat_drop (float, optional) – Dropout rate on features. Default: 0.

• bias (bool) – If True, adds a learnable bias to the output. Default: True.

• norm (callable activation function/layer or None, optional) – If not None, applies normalization to the updated node features.

• activation (callable activation function/layer or None, optional) – If not None, applies an activation function to the updated node features. Default: None.

See also

SAGEConv

forward(adj, feat)

Compute (Dense) Graph SAGE layer.

Parameters

• adj (mxnet.NDArray) – The adjacency matrix of the graph to apply SAGE Convolution on, when applied to a unidirectional bipartite graph, adj should be of shape should be of shape \((N_{out}, N_{in})\); when applied to a homo graph, adj should be of shape \((N, N)\). In both cases, a row represents a destination node while a column represents a source node.

• feat (mxnet.NDArray or a pair of mxnet.NDArray) – If a mxnet.NDArray is given, the input feature of shape \((N, D_{in})\) where \(D_{in}\) is size of input feature, \(N\) is the number of nodes. If a pair of mxnet.NDArray is given, the pair must contain two tensors of shape \((N_{in}, D_{in})\) and \((N_{out}, D_{in})\).

Returns

The output feature of shape \((N, D_{out})\) where \(D_{out}\) is size of output feature.

Return type

mxnet.NDArray