def process(self):
data_list = []
self.num_nearest_bone = 5
i = 0.0
for v_filename in self.raw_paths:
print('preprecessing data complete: {:.4f}%'.format(100 * i / len(self.raw_paths)))
i += 1.0
v = np.loadtxt(v_filename)
v = torch.from_numpy(v).float()
tpl_e = np.loadtxt(v_filename.replace('_v.txt', '_tpl_e.txt')).T
geo_e = np.loadtxt(v_filename.replace('_v.txt', '_geo_e.txt')).T
tpl_e = torch.from_numpy(tpl_e).long()
geo_e = torch.from_numpy(geo_e).long()
tpl_e, _ = add_self_loops(tpl_e, num_nodes=v.size(0))
geo_e, _ = add_self_loops(geo_e, num_nodes=v.size(0))
skin_input, skin_nn, skin_label, loss_mask = self.load_skin(v_filename.replace('_v.txt', '_skin.txt'))
skin_input = torch.from_numpy(skin_input).float()
skin_label = torch.from_numpy(skin_label).float()
skin_nn = torch.from_numpy(skin_nn).long()
loss_mask = torch.from_numpy(loss_mask).long()
num_skin = len(skin_input)
name = int(v_filename.split('/')[-1].split('_')[0])
data_list.append(Data(x=v[:, 3:6], pos=v[:, 0:3], skin_input=skin_input, skin_label=skin_label,
skin_nn=skin_nn, loss_mask=loss_mask, num_skin=num_skin, name=name,
tpl_edge_index=tpl_e, geo_edge_index=geo_e))
data, slices = self.collate(data_list)
torch.save((data, slices), self.processed_paths[0])
def diffusion_matrix_exact(self, edge_index, edge_weight, num_nodes,
method, **kwargs):
r"""Calculate the (dense) diffusion on a given sparse graph.
Note that these exact variants are not scalable. They densify the
adjacency matrix and calculate either its inverse or its matrix
exponential.
Args:
edge_index (LongTensor): The edge indices.
edge_weight (Tensor): One-dimensional edge weights.
num_nodes (int): Number of nodes.
method (str): Diffusion method:
1. :obj:`"ppr"`: Use personalized PageRank as diffusion.
Additionally expects the parameter:
- **alpha** (*float*) - Return probability in PPR.
Commonly lies in :obj:`[0.05, 0.2]`.
2. :obj:`"heat"`: Use heat kernel diffusion.
Additionally expects the parameter:
- **t** (*float*) - Time of diffusion. Commonly lies in
:obj:`[2, 10]`.
3. :obj:`"coeff"`: Freely choose diffusion coefficients.
Additionally expects the parameter:
- **coeffs** (*List[float]*) - List of coefficients
:obj:`theta_k` for each power of the transition matrix
(starting at :obj:`0`).
:rtype: (:class:`Tensor`)
"""
if method == 'ppr':
# α (I_n + (α - 1) A)^-1
edge_weight = (kwargs['alpha'] - 1) * edge_weight
edge_index, edge_weight = add_self_loops(edge_index,
edge_weight,
fill_value=1,
num_nodes=num_nodes)
mat = to_dense_adj(edge_index, edge_attr=edge_weight).squeeze()
diff_matrix = kwargs['alpha'] * torch.inverse(mat)
elif method == 'heat':
# exp(t (A - I_n))
edge_index, edge_weight = add_self_loops(edge_index,
edge_weight,
fill_value=-1,
num_nodes=num_nodes)
edge_weight = kwargs['t'] * edge_weight
mat = to_dense_adj(edge_index, edge_attr=edge_weight).squeeze()
undirected = is_undirected(edge_index, edge_weight, num_nodes)
diff_matrix = self.__expm__(mat, undirected)
elif method == 'coeff':
adj_matrix = to_dense_adj(edge_index,
edge_attr=edge_weight).squeeze()
mat = torch.eye(num_nodes, device=edge_index.device)
diff_matrix = kwargs['coeffs'][0] * mat
for coeff in kwargs['coeffs'][1:]:
mat = mat @ adj_matrix
diff_matrix += coeff * mat
else:
raise ValueError('Exact GDC diffusion {} unknown.'.format(method))
return diff_matrix
def forward(self, x_1, x_2, edge_index_pos, edge_index_neg):
"""
Forward propagation pass with features an indices.
:param x_1: Features for left hand side vertices.
:param x_2: Features for right hand side vertices.
:param edge_index_pos: Positive indices.
:param edge_index_neg: Negative indices.
:return out: Abstract convolved features.
"""
edge_index_pos, _ = remove_self_loops(edge_index_pos, None)
edge_index_pos, _ = add_self_loops(edge_index_pos, num_nodes=x_1.size(0))
edge_index_neg, _ = remove_self_loops(edge_index_neg, None)
edge_index_neg, _ = add_self_loops(edge_index_neg, num_nodes=x_2.size(0))
row_pos, col_pos = edge_index_pos
row_neg, col_neg = edge_index_neg
if self.norm: # pos: [x_1:balance features; x_2:unbalance features] neg :[x_1:unbalance features; x_2:balance features]
out_1 = scatter_mean(x_1[col_pos], row_pos, dim=0, dim_size=x_1.size(0))
out_2 = scatter_mean(x_2[col_neg], row_neg, dim=0, dim_size=x_2.size(0))
else:
out_1 = scatter_add(x_1[col_pos], row_pos, dim=0, dim_size=x_1.size(0))
out_2 = scatter_add(x_2[col_neg], row_neg, dim=0, dim_size=x_2.size(0))
out = torch.cat((out_1, out_2, x_1), 1)
out = torch.matmul(out, self.weight)
if self.bias is not None:
out = out + self.bias
if self.norm_embed:
out = F.normalize(out, p=2, dim=-1)
return out
def k_hop_edges(edge_index, num_nodes, K):
# edge_index, _ = remove_self_loops(edge_index, None)
n = num_nodes
edge_index, _ = coalesce(edge_index, None, n, n)
value = edge_index.new_ones((edge_index.size(1), ), dtype=torch.float)
edges = []
new_edge_index = edge_index.clone()
new_edge_value = value.clone()
useful_edge_index, edge_weight = add_self_loops(new_edge_index,
None,
fill_value=-1.,
num_nodes=num_nodes)
edges.append(useful_edge_index)
for i in range(K - 1):
new_edge_index, new_edge_value = spspmm(new_edge_index, new_edge_value,
edge_index, value, n, n, n)
new_edge_index, new_edge_value = coalesce(new_edge_index,
new_edge_value, n, n)
useful_edge_index, edge_weight = add_self_loops(new_edge_index,
None,
fill_value=-1.,
num_nodes=num_nodes)
edges.append(useful_edge_index)
# edge_index, _ = add_self_loops(edge_index, None,fill_value=-1.,num_nodes=num_nodes)
return edges
def create_single_data(mesh_storage: MeshStorage):
"""
create input data for the network. The data is wrapped by Data structure in pytorch-geometric library
"""
mesh_data = mesh_storage.mesh_data
# vertices
v = np.concatenate((mesh_data.mesh_v, mesh_data.mesh_vn), axis=1)
v = torch.from_numpy(v).float()
# topology edges
print(" gathering topological edges.")
tpl_e = get_tpl_edges(mesh_data.mesh_v, mesh_data.mesh_f).T
tpl_e = torch.from_numpy(tpl_e).long()
tpl_e, _ = add_self_loops(tpl_e, num_nodes=v.size(0))
# surface geodesic distance matrix
print(" calculating surface geodesic matrix.")
surface_geodesic = mesh_storage.surface_geodesic
# geodesic edges
print(" gathering geodesic edges.")
geo_e = get_geo_edges(surface_geodesic, mesh_data.mesh_v).T
geo_e = torch.from_numpy(geo_e).long()
geo_e, _ = add_self_loops(geo_e, num_nodes=v.size(0))
# batch
batch = torch.zeros(len(v), dtype=torch.long)
geo_data = Data(x=v[:, 3:6],
pos=v[:, 0:3],
tpl_edge_index=tpl_e,
geo_edge_index=geo_e,
batch=batch)
return geo_data
def create_single_data(mesh_filaname):
"""
create input data for the network. The data is wrapped by Data structure in pytorch-geometric library
:param mesh_filaname: name of the input mesh
:return: wrapped data, voxelized mesh, and geodesic distance matrix of all vertices
"""
mesh = o3d.io.read_triangle_mesh(mesh_filaname)
mesh.compute_triangle_normals()
mesh_v = np.asarray(mesh.vertices)
mesh_vn = np.asarray(mesh.vertex_normals)
mesh_f = np.asarray(mesh.triangles)
mesh_v, translation_normalize, scale_normalize = normalize_obj(mesh_v)
mesh_normalized = o3d.geometry.TriangleMesh(
vertices=o3d.utility.Vector3dVector(mesh_v),
triangles=o3d.utility.Vector3iVector(mesh_f))
o3d.io.write_triangle_mesh(
mesh_filename.replace("_remesh.obj", "_normalized.obj"),
mesh_normalized)
# vertices
v = np.concatenate((mesh_v, mesh_vn), axis=1)
v = torch.from_numpy(v).float()
# topology edges
print(" gathering topological edges.")
tpl_e = get_tpl_edges(mesh_v, mesh_f).T
tpl_e = torch.from_numpy(tpl_e).long()
tpl_e, _ = add_self_loops(tpl_e, num_nodes=v.size(0))
# surface geodesic distance matrix
print(" calculating surface geodesic matrix.")
surface_geodesic = calc_surface_geodesic(mesh)
# geodesic edges
print(" gathering geodesic edges.")
geo_e = get_geo_edges(surface_geodesic, mesh_v).T
geo_e = torch.from_numpy(geo_e).long()
geo_e, _ = add_self_loops(geo_e, num_nodes=v.size(0))
# batch
batch = torch.zeros(len(v), dtype=torch.long)
# voxel
if not os.path.exists(
mesh_filaname.replace('_remesh.obj', '_normalized.binvox')):
os.system("./binvox -d 88 -pb " +
mesh_filaname.replace("_remesh.obj", "_normalized.obj"))
with open(mesh_filaname.replace('_remesh.obj', '_normalized.binvox'),
'rb') as fvox:
vox = binvox_rw.read_as_3d_array(fvox)
data = Data(x=v[:, 3:6],
pos=v[:, 0:3],
tpl_edge_index=tpl_e,
geo_edge_index=geo_e,
batch=batch)
return data, vox, surface_geodesic, translation_normalize, scale_normalize
def test_add_self_loops():
edge_index = torch.tensor([[0, 1, 0], [1, 0, 0]])
expected = [[0, 1, 0, 0, 1], [1, 0, 0, 0, 1]]
assert add_self_loops(edge_index)[0].tolist() == expected
edge_weight = torch.tensor([0.5, 0.5, 0.5])
edge_index, edge_weight = add_self_loops(edge_index, edge_weight)
assert edge_index.tolist() == expected
assert edge_weight.tolist() == [0.5, 0.5, 0.5, 1, 1]
def process(self):
data_list = []
i = 0.0
for v_filename in self.raw_paths:
print('preprecessing data complete: {:.4f}%'.format(
100 * i / len(self.raw_paths)))
i += 1.0
v = np.loadtxt(v_filename)
m = np.loadtxt(v_filename.replace('_v.txt', '_attn.txt'))
tpl_e = np.loadtxt(v_filename.replace('_v.txt', '_tpl_e.txt')).T
geo_e = np.loadtxt(v_filename.replace('_v.txt', '_geo_e.txt')).T
joints = np.loadtxt(v_filename.replace('_v.txt', '_j.txt'))
adj = np.loadtxt(v_filename.replace('_v.txt', '_adj.txt'),
dtype=np.uint8)
vox_file = v_filename.replace('_v.txt', '.binvox')
with open(vox_file, 'rb') as fvox:
vox = binvox_rw.read_as_3d_array(fvox)
pairs = list(it.combinations(range(adj.shape[0]), 2))
pair_attr = []
for pr in pairs:
dist = np.linalg.norm(joints[pr[0]] - joints[pr[1]])
bone_samples = self.sample_on_bone(joints[pr[0]],
joints[pr[1]])
bone_samples_inside, _ = self.inside_check(bone_samples, vox)
outside_proportion = len(bone_samples_inside) / (
len(bone_samples) + 1e-10)
attr = np.array([dist, outside_proportion, adj[pr[0], pr[1]]])
pair_attr.append(attr)
pairs = np.array(pairs)
pair_attr = np.array(pair_attr)
name = int(v_filename.split('/')[-1].split('_')[0])
v = torch.from_numpy(v).float()
m = torch.from_numpy(m).long()
tpl_e = torch.from_numpy(tpl_e).long()
geo_e = torch.from_numpy(geo_e).long()
tpl_e, _ = add_self_loops(tpl_e, num_nodes=v.size(0))
geo_e, _ = add_self_loops(geo_e, num_nodes=v.size(0))
joints = torch.from_numpy(joints).float()
pairs = torch.from_numpy(pairs).float()
pair_attr = torch.from_numpy(pair_attr).float()
data_list.append(
SkeletonData(x=v[:, 3:6],
pos=v[:, 0:3],
name=name,
mask=m,
joints=joints,
tpl_edge_index=tpl_e,
geo_edge_index=geo_e,
pairs=pairs,
pair_attr=pair_attr))
data, slices = self.collate(data_list)
torch.save((data, slices), self.processed_paths[0])
def test_add_self_loops():
row = torch.tensor([0, 1, 0])
col = torch.tensor([1, 0, 0])
edge_index = torch.stack([row, col], dim=0)
expected = [[0, 1, 0, 0, 1], [1, 0, 0, 0, 1]]
assert add_self_loops(edge_index)[0].tolist() == expected
edge_weight = torch.Tensor([0.5, 0.5, 0.5])
edge_index, edge_weight = add_self_loops(edge_index, edge_weight)
assert edge_index.tolist() == expected
assert edge_weight.tolist() == [0.5, 0.5, 0.5, 1, 1]
def forward(self, nodefeatures_1, nodefeatures_2, edge_index_pos,
edge_index_neg):
"""
:param nodefeatures_1:
:param nodefeatures_2:
in the first block, the nodefeatures_1 is the balanced feature matrix, the nodefeatures_2 is the unbalanced
feature matrix.
in the first block, the nodefeatures_1 is the unbalanced feature matrix, the nodefeatures_2 is the balanced
feature matrix.
:param edge_index_pos: it is the positive edge index in the before layer
:param edge_index_neg: it is the negative edge index in the before layer
:return:
"""
edge_index_pos, _ = remove_self_loops(edge_index_pos, None)
# whether we should add some self loops to the node
edge_index_pos, _ = add_self_loops(edge_index_pos, None)
edge_index_neg, _ = remove_self_loops(edge_index_neg, None)
# whether we should add some self loops to the node
edge_index_neg, _ = add_self_loops(edge_index_neg, None)
# edge_index_pos is the neighbors of actors'
row_pos, col_pos = edge_index_pos
row_neg, col_neg = edge_index_neg
if self.norm:
out_1 = scatter_mean(nodefeatures_1[col_pos],
row_pos,
dim=0,
dim_size=nodefeatures_1.size(0))
out_2 = scatter_mean(nodefeatures_2[col_neg],
row_neg,
dim=0,
dim_size=nodefeatures_2.size(0))
else:
out_1 = scatter_add(nodefeatures_1[col_pos],
row_pos,
dim=0,
dim_size=nodefeatures_1.size(0))
out_2 = scatter_add(nodefeatures_2[col_neg],
row_neg,
dim=0,
dim_size=nodefeatures_2.size(0))
# now we have the dimension of the input features of node_feature * 3.
out = torch.cat((out_1, out_2, nodefeatures_1), dim=1)
out = out.mm(self.weight)
if self.bias is not None:
out = out + self.bias
if self.norm_embed:
out = F.normalize(out, p=2, dim=-1)
return out
def call(data, name, num_features, num_classes):
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
data.edge_index, _ = remove_self_loops(data.edge_index)
data.edge_index = add_self_loops(data.edge_index, num_nodes=data.x.size(0))
data = data.to(device)
model = Net(data, num_features, num_classes).to(device)
return model, data
def forward(self, x, edge_index):
""""""
edge_index, _ = remove_self_loops(edge_index)
edge_index, _ = add_self_loops(edge_index, num_nodes=x.size(0))
# prepare
x = torch.mm(x, self.weight).view(-1, self.heads, self.out_channels)
return self.propagate(edge_index, x=x, num_nodes=x.size(0))
def norm(edge_index, num_nodes, edge_weight, dtype=None):
edge_index, _ = remove_self_loops(edge_index)
if edge_weight is None:
edge_weight = torch.ones((edge_index.size(1), ),
dtype=dtype,
device=edge_index.device)
row, col = edge_index
deg = scatter_add(edge_weight, row, dim=0, dim_size=num_nodes)
deg_inv_sqrt = deg.pow(-0.5)
deg_inv_sqrt[deg_inv_sqrt == float('inf')] = 0
edge_index, edge_weight = add_self_loops(edge_index, edge_weight, 0,
num_nodes)
row, col = edge_index
expand_deg = torch.zeros((edge_weight.size(0), ),
dtype=dtype,
device=edge_index.device)
expand_deg[-num_nodes:] = torch.ones((num_nodes, ),
dtype=dtype,
device=edge_index.device)
return edge_index, expand_deg - deg_inv_sqrt[
row] * edge_weight * deg_inv_sqrt[col]
def test_attr(model, data):
model.eval()
accs = []
m = ['train_mask', 'val_mask', 'test_mask']
i = 0
for _, mask in data('train_mask', 'val_mask', 'test_mask'):
if m[i] == 'train_mask':
x, pos_edge_index = data.x, data.train_pos_edge_index
_edge_index, _ = remove_self_loops(pos_edge_index)
pos_edge_index_with_self_loops, _ = add_self_loops(_edge_index,
num_nodes=x.size(0))
neg_edge_index = negative_sampling(
edge_index=pos_edge_index_with_self_loops, num_nodes=x.size(0),
num_neg_samples=pos_edge_index.size(1))
else:
pos_edge_index, neg_edge_index = [
index for _, index in data("{}_pos_edge_index".format(m[i].split("_")[0]),
"{}_neg_edge_index".format(m[i].split("_")[0]))
]
neg_edge_index = neg_edge_index.to(pos_edge_index.device)
_, logits, _, _ = model(pos_edge_index, neg_edge_index)
pred = logits[mask].max(1)[1]
macro = f1_score((data.y[mask]).cpu().numpy(), pred.cpu().numpy(), average='macro')
accs.append(macro)
i += 1
return accs
def norm(edge_index, num_nodes, edge_weight, improved=False, dtype=None):
if edge_weight is None:
edge_weight = torch.ones((edge_index.size(1), ),
dtype=dtype,
device=edge_index.device)
edge_weight = edge_weight.view(-1)
assert edge_weight.size(0) == edge_index.size(1)
edge_index, edge_weight = remove_self_loops(edge_index, edge_weight)
edge_index, _ = add_self_loops(edge_index, num_nodes=num_nodes)
#pdb.set_trace()
loop_weight = torch.full((num_nodes, ),
1 if not improved else 2,
dtype=edge_weight.dtype,
device=edge_weight.device)
edge_weight = torch.cat([edge_weight, loop_weight], dim=0)
#pdb.set_trace()
row, col = edge_index
deg = scatter_add(edge_weight, col, dim=0, dim_size=num_nodes)
deg_inv_sqrt = deg.pow(-1)
deg_inv_sqrt[deg_inv_sqrt == float('inf')] = 0
return edge_index, deg_inv_sqrt[
col] * edge_weight # * deg_inv_sqrt[col]
def forward(self, x: Tensor, edge_index: Adj) -> Tensor:
""""""
edge_weight: OptTensor = None
if isinstance(edge_index, Tensor):
num_nodes = x.size(self.node_dim)
if self.add_self_loops:
edge_index, _ = remove_self_loops(edge_index)
edge_index, _ = add_self_loops(edge_index, num_nodes=num_nodes)
row, col = edge_index[0], edge_index[1]
deg_inv = 1. / degree(col, num_nodes=num_nodes).clamp_(1.)
edge_weight = deg_inv[col]
edge_weight[row == col] += self.diag_lambda * deg_inv
elif isinstance(edge_index, SparseTensor):
if self.add_self_loops:
edge_index = set_diag(edge_index)
col, row, _ = edge_index.coo() # Transposed.
deg_inv = 1. / sparsesum(edge_index, dim=1).clamp_(1.)
edge_weight = deg_inv[col]
edge_weight[row == col] += self.diag_lambda * deg_inv
edge_index = edge_index.set_value(edge_weight, layout='coo')
# propagate_type: (x: Tensor, edge_weight: OptTensor)
out = self.propagate(edge_index,
x=x,
edge_weight=edge_weight,
size=None)
out = self.lin_out(out) + self.lin_root(x)
return out
def norm(edge_index,
num_nodes,
edge_weight,
normalization,
lambda_max,
dtype=None,
batch=None):
edge_index, edge_weight = remove_self_loops(edge_index, edge_weight)
edge_index, edge_weight = get_laplacian(edge_index, edge_weight,
normalization, dtype,
num_nodes)
if batch is not None and torch.is_tensor(lambda_max):
lambda_max = lambda_max[batch[edge_index[0]]]
edge_weight = (2.0 * edge_weight) / lambda_max
edge_weight[edge_weight == float('inf')] = 0
edge_index, edge_weight = add_self_loops(edge_index,
edge_weight,
fill_value=-1,
num_nodes=num_nodes)
return edge_index, edge_weight
def __norm__(self,
edge_index,
num_nodes: Optional[int],
edge_weight: OptTensor,
normalization: Optional[str],
lambda_max,
dtype: Optional[int] = None,
batch: OptTensor = None):
edge_index, edge_weight = remove_self_loops(edge_index, edge_weight)
edge_index, edge_weight = get_laplacian(edge_index, edge_weight,
normalization, dtype,
num_nodes)
if batch is not None and lambda_max.numel() > 1:
lambda_max = lambda_max[batch[edge_index[0]]]
edge_weight = (2.0 * edge_weight) / lambda_max
edge_weight.masked_fill_(edge_weight == float('inf'), 0)
edge_index, edge_weight = add_self_loops(edge_index,
edge_weight,
fill_value=-1.,
num_nodes=num_nodes)
assert edge_weight is not None
return edge_index, edge_weight
def forward(self, x, edge_index, edge_attr, params, param_name_dict, size=None):
self.att = get_param(params, param_name_dict, "att")
# self.edge_update = params[self.get_param_id(param_name_dict, 'edge_update')]
self.bias = None
if self.use_bias:
self.bias = get_param(params, param_name_dict, "bias")
if size is None and torch.is_tensor(x):
edge_index, _ = remove_self_loops(edge_index)
edge_index, _ = add_self_loops(edge_index, num_nodes=x.size(0))
# get gru params
self.gru_weight_ih = get_param(params, param_name_dict, "gru_w_ih")
self.gru_weight_hh = get_param(params, param_name_dict, "gru_w_hh")
self.gru_bias_ih = get_param(params, param_name_dict, "gru_b_ih")
self.gru_bias_hh = get_param(params, param_name_dict, "gru_b_hh")
self.gru_hx = x
# Note: we need to add blank edge attributes for self loops
weight = get_param(params, param_name_dict, "weight")
if torch.is_tensor(x):
x = torch.matmul(x, weight)
else:
x = (
None if x[0] is None else torch.matmul(x[0], weight),
None if x[1] is None else torch.matmul(x[1], weight),
)
return self.propagate(
edge_index, size=size, x=x, num_nodes=x.size(0), edge_attr=edge_attr
)
def forward(self, x: Union[OptTensor, PairOptTensor],
pos: Union[Tensor, PairTensor], edge_index: Adj) -> Tensor:
""""""
if not isinstance(x, tuple):
x: PairOptTensor = (x, None)
if isinstance(pos, Tensor):
pos: PairTensor = (pos, pos)
if self.add_self_loops:
if isinstance(edge_index, Tensor):
edge_index, _ = remove_self_loops(edge_index)
edge_index, _ = add_self_loops(edge_index,
num_nodes=min(
pos[0].size(0),
pos[1].size(0)))
elif isinstance(edge_index, SparseTensor):
edge_index = set_diag(edge_index)
# propagate_type: (x: PairOptTensor, pos: PairTensor)
out = self.propagate(edge_index, x=x, pos=pos, size=None)
if self.global_nn is not None:
out = self.global_nn(out)
return out
def forward(self, x, edge_index, edge_attr, params, param_name_dict, size=None):
self.att = get_param(params, param_name_dict, "att")
self.edge_update = get_param(params, param_name_dict, "edge_update")
self.bias = None
if self.use_bias:
self.bias = get_param(params, param_name_dict, "bias")
if size is None and torch.is_tensor(x):
edge_index, _ = remove_self_loops(edge_index)
edge_index, _ = add_self_loops(edge_index, num_nodes=x.size(0))
# edge_index = add_self_loops(edge_index, num_nodes=x.size(0))
self_loop_edges = torch.zeros(x.size(0), edge_attr.size(1)).to(
edge_index.device
)
edge_attr = torch.cat([edge_attr, self_loop_edges], dim=0) # (500, 10)
# Note: we need to add blank edge attributes for self loops
weight = get_param(params, param_name_dict, "weight")
if torch.is_tensor(x):
x = torch.matmul(x, weight)
else:
x = (
None if x[0] is None else torch.matmul(x[0], weight),
None if x[1] is None else torch.matmul(x[1], weight),
)
# x = x.view(-1, self.heads, self.out_channels)
# x = torch.mm(x, weight).view(-1, self.heads, self.out_channels)
return self.propagate(
edge_index, size=size, x=x, num_nodes=x.size(0), edge_attr=edge_attr
)
def test_add_self_loops():
row = torch.LongTensor([0, 1, 0])
col = torch.LongTensor([1, 0, 0])
expected_output = [[0, 1, 0, 0, 1], [1, 0, 0, 0, 1]]
output = add_self_loops(torch.stack([row, col], dim=0))
assert output.tolist() == expected_output
def call(data, name, num_features, num_classes):
filename = '../data/curvature/graph_' + name + '.edge_list'
f = open(filename)
cur_list = list(f)
if name == 'Cora' or name == 'CS':
ricci_cur = [[] for i in range(len(cur_list))]
for i in range(len(cur_list)):
ricci_cur[i] = [num(s) for s in cur_list[i].split(' ', 2)]
else:
ricci_cur = [[] for i in range(2 * len(cur_list))]
for i in range(len(cur_list)):
ricci_cur[i] = [num(s) for s in cur_list[i].split(' ', 2)]
ricci_cur[i + len(cur_list)] = [
ricci_cur[i][1], ricci_cur[i][0], ricci_cur[i][2]
]
ricci_cur = sorted(ricci_cur)
w_mul = [i[2] for i in ricci_cur]
#w_mul=[(i[2]+1)/2 for i in ricci_cur]
w_mul = w_mul + [0 for i in range(data.x.size(0))]
w_mul = torch.tensor(w_mul, dtype=torch.float)
data.edge_index, _ = remove_self_loops(data.edge_index)
data.edge_index, _ = add_self_loops(data.edge_index,
num_nodes=data.x.size(0))
data.w_mul = w_mul.view(-1, 1)
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
#change to call function
data.w_mul = data.w_mul.to(device)
model, data = Net(data, num_features, num_classes,
data.w_mul).to(device), data.to(device)
return model, data
def main():
args = ArgsInit().args
dataset = PygNodePropPredDataset(name=args.dataset)
graph = dataset[0]
if args.self_loop:
graph.edge_index = add_self_loops(edge_index=graph.edge_index,
num_nodes=graph.num_nodes)[0]
split_idx = dataset.get_idx_split()
evaluator = Evaluator(args.dataset)
args.in_channels = graph.x.size(-1)
args.num_tasks = dataset.num_classes
print(args)
model = DeeperGCN(args)
print(model)
model.load_state_dict(torch.load(args.model_load_path)['model_state_dict'])
result = test(model, graph.x, graph.edge_index, graph.y, split_idx,
evaluator)
print(result)
model.print_params(final=True)
def forward(
self,
x: Union[Tensor, PairTensor],
pos: Union[Tensor, PairTensor],
edge_index: Adj,
) -> Tensor:
""""""
if isinstance(x, Tensor):
alpha = (self.lin_src(x), self.lin_dst(x))
x: PairTensor = (self.lin(x), x)
else:
alpha = (self.lin_src(x[0]), self.lin_dst(x[1]))
x = (self.lin(x[0]), x[1])
if isinstance(pos, Tensor):
pos: PairTensor = (pos, pos)
if self.add_self_loops:
if isinstance(edge_index, Tensor):
edge_index, _ = remove_self_loops(edge_index)
edge_index, _ = add_self_loops(edge_index,
num_nodes=min(
pos[0].size(0),
pos[1].size(0)))
elif isinstance(edge_index, SparseTensor):
edge_index = set_diag(edge_index)
# propagate_type: (x: PairTensor, pos: PairTensor, alpha: PairTensor)
out = self.propagate(edge_index, x=x, pos=pos, alpha=alpha, size=None)
return out
def forward(self, x, edge_index, edge_weight=None):
""""""
if edge_weight is None:
edge_weight = torch.ones((edge_index.size(1), ),
dtype=x.dtype,
device=x.device)
edge_weight = edge_weight.view(-1)
assert edge_weight.size(0) == edge_index.size(1)
edge_index = add_self_loops(edge_index, num_nodes=x.size(0))
loop_weight = torch.full((x.size(0), ),
1 if not self.improved else 2,
dtype=x.dtype,
device=x.device)
edge_weight = torch.cat([edge_weight, loop_weight], dim=0)
row, col = edge_index
deg = scatter_add(edge_weight, row, dim=0, dim_size=x.size(0))
deg_inv = deg.pow(-0.5)
deg_inv[deg_inv == float('inf')] = 0
norm = deg_inv[row] * edge_weight * deg_inv[col]
x = torch.matmul(x, self.weight)
return self.propagate('add', edge_index, x=x, norm=norm)
def forward(self, x, edge_index, edge_attr):
#add self loops in the edge space
edge_index = add_self_loops(edge_index, num_nodes=x.size(0))
#add features corresponding to self-loop edges.
self_loop_attr = torch.zeros(x.size(0), 9)
self_loop_attr[:, 7] = 1 # attribute for self-loop edge
self_loop_attr = self_loop_attr.to(edge_attr.device).to(
edge_attr.dtype)
edge_attr = torch.cat((edge_attr, self_loop_attr), dim=0)
edge_embeddings = self.edge_encoder(edge_attr)
if self.input_layer:
x = self.input_node_embeddings(x.to(torch.int64).view(-1, ))
norm = self.norm(edge_index, x.size(0), x.dtype)
x = self.linear(x)
return self.propagate(self.aggr,
edge_index,
x=x,
edge_attr=edge_embeddings,
norm=norm)
def forward(self, x, edge_neighbors, edge_weight=None):
"""
needs to be changed to have:
- edge_neighborhoods
- xedge as features for edges
- aggregate function
"""
if edge_weight is None:
edge_weight = torch.ones((edge_neighbors.size(1), ),
dtype=x.dtype,
device=x.device)
edge_weight = edge_weight.view(-1)
assert edge_weight.size(0) == edge_neighbors.size(1)
edge_neighbors = add_self_loops(edge_neighbors, num_nodes=x.size(0))
loop_weight = torch.full((x.size(0), ),
1 if not self.improved else 2,
dtype=x.dtype,
device=x.device)
edge_weight = torch.cat([edge_weight, loop_weight], dim=0)
row, col = edge_neighbors
deg = scatter_add(edge_weight, row, dim=0, dim_size=x.size(0))
deg_inv = deg.pow(-0.5)
deg_inv[deg_inv == float('inf')] = 0
norm = deg_inv[row] * edge_weight * deg_inv[col]
x = torch.matmul(x, self.weight)
return self.propagate('add', edge_neighbors, x=x, norm=norm)
def gcn_norm(self,
edge_index,
edge_weight=None,
num_nodes=None,
improved=False,
dtype=None):
fill_value = 2. if improved else 1.
num_nodes = maybe_num_nodes(edge_index, num_nodes)
if edge_weight is None:
edge_weight = torch.ones((edge_index.size(1), ),
dtype=dtype,
device=edge_index.device)
edge_index, tmp_edge_weight = add_self_loops(edge_index, edge_weight,
fill_value, num_nodes)
assert tmp_edge_weight is not None
edge_weight = tmp_edge_weight
row, col = edge_index[0], edge_index[1]
deg = scatter_add(edge_weight, col, dim=0, dim_size=num_nodes)
deg_inv_sqrt = deg.pow_(-0.5)
deg_inv_sqrt.masked_fill_(deg_inv_sqrt == float('inf'), 0)
return edge_index, deg_inv_sqrt[row] * edge_weight * deg_inv_sqrt[col]
def get_batch(self, splt: str) -> Tuple[torch.Tensor, torch.Tensor]:
from torch_geometric.utils import (negative_sampling,
remove_self_loops, add_self_loops)
n = self.x.shape[0]
if splt == 'train':
pos_edge_index = self.train_edge_index
num_neg_edges = pos_edge_index.shape[1]
pos_edge_clean, _ = remove_self_loops(pos_edge_index)
pos_edge_w_self_loop, _ = add_self_loops(pos_edge_clean,
num_nodes=n)
neg_edge_index = negative_sampling(edge_index=pos_edge_w_self_loop,
num_nodes=n,
num_neg_samples=num_neg_edges)
elif splt == 'val':
pos_edge_index, neg_edge_index = self.val_edge_index
elif splt == 'test':
pos_edge_index, neg_edge_index = self.test_edge_index
else:
raise ValueError(f'Unknown splt: {splt}')
query_edge_index = torch.cat([pos_edge_index, neg_edge_index], dim=-1)
link_y = torch.zeros_like(query_edge_index[0], dtype=torch.float)
link_y[:pos_edge_index.shape[1]] = 1
return query_edge_index, link_y