def main():
# Training settings
parser = argparse.ArgumentParser(description='PyTorch implementation of pre-training of graph neural networks')
parser.add_argument('--device', type=int, default=0,
help='which gpu to use if any (default: 0)')
parser.add_argument('--batch_size', type=int, default=256,
help='input batch size for training (default: 256)')
parser.add_argument('--epochs', type=int, default=100,
help='number of epochs to train (default: 100)')
parser.add_argument('--lr', type=float, default=0.001,
help='learning rate (default: 0.001)')
parser.add_argument('--decay', type=float, default=0,
help='weight decay (default: 0)')
parser.add_argument('--num_layer', type=int, default=5,
help='number of GNN message passing layers (default: 5).')
parser.add_argument('--emb_dim', type=int, default=300,
help='embedding dimensions (default: 300)')
parser.add_argument('--dropout_ratio', type=float, default=0,
help='dropout ratio (default: 0)')
parser.add_argument('--JK', type=str, default="last",
help='how the node features across layers are combined. last, sum, max or concat')
parser.add_argument('--dataset', type=str, default = 'zinc_standard_agent', help='root directory of dataset. For now, only classification.')
parser.add_argument('--output_model_file', type = str, default = '', help='filename to output the pre-trained model')
parser.add_argument('--gnn_type', type=str, default="gin")
parser.add_argument('--num_workers', type=int, default = 8, help='number of workers for dataset loading')
args = parser.parse_args()
torch.manual_seed(0)
np.random.seed(0)
device = torch.device("cuda:" + str(args.device)) if torch.cuda.is_available() else torch.device("cpu")
if torch.cuda.is_available():
torch.cuda.manual_seed_all(0)
#set up dataset
dataset = MoleculeDataset("dataset/" + args.dataset, dataset=args.dataset, transform = NegativeEdge())
print(dataset[0])
loader = DataLoaderAE(dataset, batch_size=args.batch_size, shuffle=True, num_workers = args.num_workers)
#set up model
model = GNN(args.num_layer, args.emb_dim, JK = args.JK, drop_ratio = args.dropout_ratio, gnn_type = args.gnn_type)
model.to(device)
#set up optimizer
optimizer = optim.Adam(model.parameters(), lr=args.lr, weight_decay=args.decay)
print(optimizer)
for epoch in range(1, args.epochs+1):
print("====epoch " + str(epoch))
train_acc, train_loss = train(args, model, device, loader, optimizer)
print(train_acc)
print(train_loss)
if not args.output_model_file == "":
torch.save(model.state_dict(), args.output_model_file + ".pth")
def get_accuracy(params):
gnn_graph = utils.build_gnn_graph(dataset, params)
model = GNN(gnn_graph).to(device)
setting = utils.from_json("json/setting.json")[args.dataset]
optimizer = torch.optim.Adam(model.parameters(),
lr=setting["learning_rate"],
weight_decay=setting["weight_decay"])
fitter = Fitter(model, data, optimizer)
history = fitter.run(verbose=args.verbose)
reward = max(history.val.acc)
return reward
def evaluate(params, dataset, device='cuda:0', val_test='test'):
data = Dataset(dataset)
gnn_graph = utils.build_gnn_graph(data, params)
model = GNN(gnn_graph).to(device)
# logger.info(dataset)
setting = utils.from_json("json/setting.json")[dataset]
optimizer = torch.optim.Adam(model.parameters(),
lr=setting["learning_rate"],
weight_decay=setting["weight_decay"])
fitter = Fitter(model, data[0].to(device), optimizer)
history = fitter.run(val_test=val_test, verbose=False)
return max(history.val.acc)
parser.add_argument('-c', '--cuda', type=int, required=True)
args = parser.parse_args()
embed_size = 64
dropout = 0.5
learning_rate = 0.01
num_epochs = 100
device = torch.device(
f'cuda:{args.cuda}' if torch.cuda.is_available() else 'cpu')
data_train, data_test = AMT(device)
model = GNN(*data_train.size, embed_size, dropout).to(device)
criterion = nn.MSELoss()
optimizer = optim.Adam(model.parameters(), lr=learning_rate)
for epoch in range(num_epochs):
model.train()
y_pred = model(data_train).reshape(-1)
y = data_train.edge_type.float()
loss = criterion(y_pred, y)
optimizer.zero_grad()
loss.backward()
optimizer.step()
rmse_loss_train = loss.item()**0.5
model.eval()
class Runner(object):
def __init__(self, params):
self.p = params
self.device = torch.device('cpu' if self.p.gpu ==
-1 else f'cuda:{params.gpu}')
#self.device = torch.device('cpu')
self.data, self.num_classes, self.num_genes, self.id2label = load(
self.p)
#self.data['human']['hot_mat'] = torch.rand(self.data['human']['hot_mat'].shape)
#self.data['mouse']['hot_mat'] = torch.rand(self.data['mouse']['hot_mat'].shape)
#print(self.data['shared_gene_tensor'])
#print(torch.min(self.data['shared_gene_tensor']))
#print(torch.max(self.data['shared_gene_tensor']))
#print(len(self.data['shared_gene_tensor']))
#print(self.data['human_gene_tensor'])
#print(len(self.data['human_gene_tensor']))
#print(self.data['mouse_gene_tensor'])
#print(len(self.data['mouse_gene_tensor']))
self.model = GNN(in_feats=self.p.dense_dim,
shared_gene=self.data['shared_gene_tensor'],
human_gene=self.data['human_gene_tensor'],
mouse_gene=self.data['mouse_gene_tensor'],
n_hidden=self.p.hidden_dim,
n_class=self.num_classes,
n_layer=self.p.n_layers,
activation=F.relu,
dropout=self.p.dropout,
weighted=self.p.weighted,
device=self.device,
gene_num=self.num_genes).to(self.device)
total_trainable_params = sum(p.numel()
for p in self.model.parameters()
if p.requires_grad)
print(f'{total_trainable_params:,} training parameters.')
self.optimizer = torch.optim.Adam(self.model.parameters(),
lr=params.lr,
weight_decay=self.p.weight_decay)
self.domain_criterion = torch.nn.CrossEntropyLoss()
if self.p.num_neighbors == 0:
self.num_neighbors = max([
self.data['mouse']['graph'].number_of_nodes(),
self.data['human']['graph'].number_of_nodes()
])
else:
self.num_neighbors = self.p.num_neighbors
self.data_loader = self.get_dataloader()
def fit(self):
max_test_acc = 0
final_test_report = None
for epoch in range(self.p.n_epochs):
# lahelr
print("Epoch {}".format(epoch))
start_time = time.time()
loss = self.train(epoch)
train_correct, train_total, train_st, _ = self.evaluate('mouse')
test_correct, test_total, test_st, test_report = self.evaluate(
'human')
train_acc, test_acc = train_correct / train_total, test_correct / test_total
if test_acc > max_test_acc:
max_test_acc = test_acc
final_test_report = test_report
if epoch % 5 == 0:
print(
f"E [{epoch}], loss: {loss:.5f}, train acc: {train_acc:.4f}, test acc: {test_acc:.4f}, cost: {time.time() - start_time:.2f}s"
)
writer.add_scalar('Train/loss',loss, epoch)
writer.add_scalar('Train/acc',train_acc, epoch)
writer.add_scalar('Test/acc', test_acc, epoch)
# for i, (key, value) in enumerate(test_st.items()):
# print(f"#{i} [{self.id2label[key]}]: {value}, [{value / test_total:.4f}]")
print(f"MAX TEST ACC: {max_test_acc:.5f}")
for i, label in enumerate(self.id2label):
print(
f"#{i} [{label}] F1-score={final_test_report[label]['f1-score']:.4f}, precision={final_test_report[label]['precision']:.4f}, recall={final_test_report[label]['recall']:.4f}"
)
def train(self, epoch, species='mouse'):
self.model.train()
tmp_dataloader = self.get_tmp_dataloader()
len_dataloader = len(tmp_dataloader['mouse'])
losses = []
for i, ((source_blocks, source_edges),
(target_blocks, target_edges)) in enumerate(
zip(tmp_dataloader[species], tmp_dataloader['human'])):
p = float(i + epoch *
len_dataloader) / self.p.n_epochs / len_dataloader
alpha = 2. / (1. + np.exp(-10 * p)) - 1
# source_input_nodes : neighbour of batch nodes
source_input_nodes = source_blocks[0].srcdata[dgl.NID]
# source_seeds : batch nodes
source_seeds = source_blocks[-1].dstdata[dgl.NID]
# sourc_batch_labels : torch.size([256]), label of batch_nodes
source_batch_input, source_batch_labels, source_batch_seeds = self.to_device(
species, source_seeds, source_input_nodes)
source_blocks = [b.to(self.device) for b in source_blocks]
shared_gene_tensor = self.data['shared_gene_tensor']
#print("source_batch_seeds : {}".format(source_batch_seeds.shape))
#print("shared_features : {}".format(shared_features.shape))
source_batch_shared_or_not_list = []
for i in range(source_input_nodes.shape[0]):
if (source_input_nodes[i] in shared_gene_tensor):
source_batch_shared_or_not_list.append(1)
#print('source_batch_input_grad : {}'.format(source_batch_input[i].grad))
else:
source_batch_shared_or_not_list.append(-1)
source_batch_shared_or_not = torch.tensor(source_batch_shared_or_not_list,dtype=torch.float)
class_or_domain = True
source_class_output, _ = self.model(
source_blocks, source_batch_input,
self.data[species]['weight'], source_edges, class_or_domain, alpha)
label_loss = self.model.cal_loss(source_class_output,
source_batch_labels,
self.p.lbl_smooth)
self.optimizer.zero_grad()
label_loss.backward(retain_graph=True)
class_or_domain = False
_, source_domain_output = self.model(
source_blocks, source_batch_input,
self.data[species]['weight'], source_edges, class_or_domain, alpha)
target_input_nodes = target_blocks[0].srcdata[dgl.NID]
target_seeds = target_blocks[-1].dstdata[dgl.NID]
target_batch_input, target_batch_labels, target_batch_seeds = self.to_device(
'human', target_seeds, target_input_nodes)
target_blocks = [b.to(self.device) for b in target_blocks]
_, target_domain_output = self.model(target_blocks,
target_batch_input,
self.data['human']['weight'],
target_edges, class_or_domain, alpha)
domain_label = torch.tensor(
[0] * source_domain_output.shape[0] +
[1] * target_domain_output.shape[0]).long().to(self.device)
domain_loss = self.domain_criterion(
torch.cat([source_domain_output, target_domain_output]),
domain_label)
domain_loss.backward()
self.optimizer.step()
loss = domain_loss + label_loss
losses.append(loss.item())
return np.mean(losses)
def evaluate(self, species):
self.model.eval()
total_correct = 0
label, pred = [], []
for step, (blocks, edges) in enumerate(self.data_loader[species]):
input_nodes = blocks[0].srcdata[dgl.NID]
seeds = blocks[-1].dstdata[dgl.NID]
batch_input, batch_labels, batch_seeds = self.to_device(species, seeds,
input_nodes)
blocks = [b.to(self.device) for b in blocks]
shared_gene_tensor = self.data['shared_gene_tensor']
""""
batch_shared_or_not_list = []
for i in range(input_nodes.shape[0]):
if (input_nodes[i] in shared_gene_tensor):
batch_shared_or_not_list.append(1)
else:
batch_shared_or_not_list.append(-1)
batch_shared_or_not = torch.tensor(batch_shared_or_not_list,dtype=torch.float)
"""
class_or_domain = True
with torch.no_grad():
batch_pred, _ = self.model(blocks, batch_input,
self.data[species]['weight'], edges, class_or_domain,alpha=1)
indices = torch.argmax(batch_pred, dim=1)
label.extend(batch_labels.tolist())
pred.extend(indices.tolist())
total_correct += torch.sum(indices == batch_labels).item()
pred_statistics = dict(collections.Counter(pred))
report = classification_report(y_true=label,
y_pred=pred,
target_names=self.id2label,
output_dict=True)
return total_correct, self.data[species][
'num_cell'], pred_statistics, report
def to_device(self, species, seeds, input_nodes):
#print("{} running to_device hot_mat {}".format(species, self.data[species]['hot_mat'].shape))
#print("{} input_nodes max {} min {}".format(species, torch.max(input_nodes), torch.min(input_nodes)))
#print("{} seeds max {} min {}".format(species, torch.max(seeds), torch.min(seeds)))
#for i in range(len(input_nodes)):
# if (input_nodes[i] > 11932):
# print(input_nodes[i], (input_nodes[i] in seeds.tolist()))
#print(len(input_nodes))
#print(len(seeds))
#mouse_hot_mat_test = self.data['mouse']['hot_mat'][11932:,:].numpy()
#human_hot_mat_test = self.data['human']['hot_mat'][11932:,:].numpy()
#row, col = np.nonzero(mouse_hot_mat_test)
#print("mouse gene used {}".format(len(set(col))))
#row, col = np.nonzero(human_hot_mat_test)
#print("human gene used {}".format(len(set(col))))
batch_input = self.data[species]['hot_mat'][input_nodes].to(
self.device)
batch_labels = self.data[species]['label'][seeds].to(self.device)
batch_seeds = self.data[species]['hot_mat'][seeds].to(self.device)
return batch_input, batch_labels, batch_seeds
def get_dataloader(self):
data_loader = dict()
fanouts = [self.num_neighbors] * self.p.n_layers
for species in ['human', 'mouse']:
sampler = NeighborSampler(self.data[species]['graph'], fanouts)
loader = DataLoader(dataset=self.data[species]['seed_id'].numpy(),
batch_size=self.p.batch_size,
collate_fn=sampler.sample_blocks,
shuffle=False,
num_workers=os.cpu_count() // 2)
data_loader[species] = loader
return data_loader
def get_tmp_dataloader(self):
data_loader = dict()
seed_dict = dict()
fanouts = [self.num_neighbors] * self.p.n_layers
# make up length of dataset
len_diff = len(self.data['human']['seed_id']) - len(
self.data['mouse']['seed_id'])
if len_diff > 0:
seed_dict['mouse'] = self.data['mouse']['seed_id'].numpy()
seed_dict['human'] = np.random.choice(
self.data['human']['seed_id'].numpy(),
len(self.data['mouse']['seed_id']),
replace=False)
# seed_dict['human'] = self.data['human']['seed_id'].numpy()
# seed_dict['mouse'] = np.concatenate([self.data['mouse']['seed_id'].numpy(),
# np.random.choice(self.data['mouse']['seed_id'].numpy(), len_diff)])
else:
seed_dict['human'] = self.data['human']['seed_id'].numpy()
seed_dict['mouse'] = np.random.choice(
self.data['mouse']['seed_id'].numpy(),
len(self.data['human']['seed_id']),
replace=False)
# seed_dict['mouse'] = self.data['mouse']['seed_id'].numpy()
# seed_dict['human'] = np.concatenate([self.data['human']['seed_id'].numpy(),
# np.random.choice(self.data['human']['seed_id'].numpy(), -len_diff)])
assert seed_dict['mouse'].shape == seed_dict['human'].shape
for species in ['human', 'mouse']:
sampler = NeighborSampler(self.data[species]['graph'], fanouts)
loader = DataLoader(dataset=seed_dict[species],
batch_size=self.p.batch_size,
collate_fn=sampler.sample_blocks,
shuffle=True,
num_workers=os.cpu_count() // 2)
data_loader[species] = loader
return data_loader
class DCN():
def __init__(self, batch_size, num_features, num_layers, J, dim_input, clip_grad_norm, logger):
self.logger = logger
self.clip_grad_norm = clip_grad_norm
self.batch_size = batch_size
self.J = J
self.Split = Split_GNN(batch_size, num_features, num_layers, J+2, dim_input=dim_input)
self.Tsp = GNN(num_features, num_layers, J+2, dim_input=dim_input)
self.Merge = GNN(num_features, num_layers, J+2, dim_input=dim_input)
self.optimizer_split = optim.RMSprop(self.Split.parameters())
self.optimizer_tsp = optim.Adamax(self.Tsp.parameters(), lr=1e-3)
self.optimizer_merge = optim.Adamax(self.Merge.parameters(), lr=1e-3)
self.test_gens = []
self.test_gens_labels = []
def load_split(self, path_load):
self.Split = self.logger.load_model(path_load, 'split')
self.optimizer_split = optim.RMSprop(self.Split.parameters())
def load_tsp(self, path_load):
self.Tsp = self.logger.load_model(path_load, 'tsp')
self.optimizer_tsp = optim.Adamax(self.Tsp.parameters(), lr=1e-3)
def load_merge(self, path_load):
self.Merge = self.logger.load_model(path_load, 'merge')
self.optimizer_merge = optim.Adamax(self.Merge.parameters(), lr=1e-3)
def save_model(self, path_load, it=-1):
self.logger.save_model(path_load, self.Split, self.Tsp, self.Merge, it=it)
def set_dataset(self, path_dataset, num_examples_train, num_examples_test, N_train, N_test):
self.gen = Generator(path_dataset, args.path_tsp)
self.gen.num_examples_train = num_examples_train
self.gen.num_examples_test = num_examples_test
self.gen.N_train = N_train
self.gen.N_test = N_test
self.gen.load_dataset()
def add_test_dataset(self, gen, label):
self.test_gens.append(gen)
self.test_gens_labels.append(label)
def sample_one(self, probs, mode='train'):
probs = 1e-4 + probs*(1 - 2e-4) # to avoid log(0)
if mode == 'train':
rand = torch.zeros(*probs.size()).type(dtype)
nn.init.uniform(rand)
else:
rand = torch.ones(*probs.size()).type(dtype) / 2
bin_sample = probs > Variable(rand)
sample = bin_sample.clone().type(dtype)
log_probs_samples = (sample*torch.log(probs) + (1-sample)*torch.log(1-probs)).sum(1)
return bin_sample.data, sample.data, log_probs_samples
def split_operator(self, W, sample, cities):
bs = sample.size(0)
Ns1 = sample.long().sum(1)
N1 = Ns1.max(0)[0][0]
W1 = torch.zeros(bs, N1, N1).type(dtype)
cts = torch.zeros(bs, N1, 2).type(dtype)
for b in range(bs):
inds = torch.nonzero(sample[b]).squeeze()
n = Ns1[b]
W1[b,:n,:n] = W[b].index_select(1, inds).index_select(0, inds)
cts[b,:n,:] = cities[b].index_select(0, inds)
return W1, cts
def compute_other_operators(self, W, Ns, cts, J):
bs = W.size(0)
N = W.size(-1)
QQ = W.clone()
WW = torch.zeros(bs, N, N, J + 2).type(dtype)
eye = torch.eye(N).type(dtype).unsqueeze(0).expand(bs,N,N)
WW[:, :, :, 0] = eye
for j in range(J):
WW[:, :, :, j+1] = QQ.clone()
QQ = torch.bmm(QQ, QQ)
mx = QQ.max(2)[0].max(1)[0].unsqueeze(1).unsqueeze(2).expand_as(QQ)
QQ /= torch.clamp(mx, min=1e-6)
QQ *= np.sqrt(2)
d = W.sum(1)
D = d.unsqueeze(1).expand_as(eye) * eye
WW[:, :, :, J] = D
U = Ns.float().unsqueeze(1).expand(bs,N)
U = torch.ge(U, torch.arange(1,N+1).type(dtype).unsqueeze(0).expand(bs,N))
U = U.float() / Ns.float().unsqueeze(1).expand_as(U)
U = torch.bmm(U.unsqueeze(2),U.unsqueeze(1))
WW[:, :, :, J+1] = U
x = torch.cat((d.unsqueeze(2),cts),2)
return Variable(WW), Variable(x), Variable(WW[:,:,:,1])
def compute_operators(self, W, sample, cities, J):
bs = sample.size(0)
Ns1 = sample.long().sum(1)
Ns2 = (1-sample.long()).sum(1)
W1, cts1 = self.split_operator(W, sample, cities)
W2, cts2 = self.split_operator(W, 1-sample, cities)
op1 = self.compute_other_operators(W1, Ns1, cts1, J)
op2 = self.compute_other_operators(W2, Ns2, cts2, J)
return op1, op2
WW[:, :, :, J + 1] = Phi / Phi.sum(1).unsqueeze(1).expand_as(Phi)
return WW, d, Phi
def join_preds(self, pred1, pred2, sample):
bs = pred1.size(0)
N = sample.size(1)
N1 = pred1.size(1)
N2 = pred2.size(1)
pred = Variable(torch.ones(bs,N,N).type(dtype)*(-999))
for b in range(bs):
n1 = sample[b].long().sum(0)[0]
n2 = (1-sample[b]).long().sum(0)[0]
inds = torch.cat((torch.nonzero(sample[b]).type(dtype),torch.nonzero(1-sample[b]).type(dtype)),0).squeeze()
inds = torch.topk(-inds,N)[1]
M = Variable(torch.zeros(N,N).type(dtype))
M[:n1,:n1] = pred1[b,:n1,:n1]
M[n1:,n1:] = pred2[b,:n2,:n2]
inds = Variable(inds, requires_grad=False)
M = M.index_select(0,inds).index_select(1,inds)
pred[b, :, :] = M
return pred
def forward(self, input, W, cities):
scores, probs = self.Split(input)
#variance = compute_variance(probs)
bin_sample, sample, log_probs_samples = self.sample_one(probs, mode='train')
op1, op2 = self.compute_operators(W.data, bin_sample, cities, self.J)
pred1 = self.Tsp(op1)
pred2 = self.Tsp(op2)
partial_pred = self.join_preds(pred1, pred2, bin_sample)
partial_pred = F.sigmoid(partial_pred)
pred = self.Merge((input[0], input[1], partial_pred))
return probs, log_probs_samples, pred
def compute_loss(self, pred, target, logprobs):
loss_split = 0.0
loss_merge = 0.0
labels = target[1]
for i in range(labels.size()[-1]):
for j in range(labels.size()[0]):
lab = labels[j, :, i].contiguous().view(-1)
cel = CEL(pred[j], lab)
loss_merge += cel
loss_split += Variable(cel.data) * logprobs[j]
return loss_merge/pred.size(0), loss_split/pred.size(0)
def train(self, iterations, print_freq, test_freq, save_freq, path_model):
for it in range(iterations):
start = time.time()
batch = self.gen.sample_batch(self.batch_size, cuda=torch.cuda.is_available())
input, W, WTSP, labels, target, cities, perms, costs = extract(batch)
probs, log_probs_samples, pred = self.forward(input, W, cities)
loss_merge, loss_split = self.compute_loss(pred, target, log_probs_samples)
#loss_split -= variance*rf
self.Split.zero_grad()
loss_split.backward()
nn.utils.clip_grad_norm(self.Split.parameters(), self.clip_grad_norm)
self.optimizer_split.step()
self.Tsp.zero_grad()
self.Merge.zero_grad()
loss_merge.backward()
nn.utils.clip_grad_norm(self.Tsp.parameters(), clip_grad)
nn.utils.clip_grad_norm(self.Merge.parameters(), clip_grad)
self.optimizer_tsp.step()
self.optimizer_merge.step()
self.logger.add_train_loss(loss_split, loss_merge)
self.logger.add_train_accuracy(pred, labels, W)
elapsed = time.time() - start
if it%print_freq == 0 and it > 0:
loss_split = loss_split.data.cpu().numpy()[0]
loss_merge = loss_merge.data.cpu().numpy()[0]
out = ['---', it, loss_split, loss_merge, self.logger.cost_train[-1],
self.logger.accuracy_train[-1], elapsed]
print(template_train1.format(*info_train))
print(template_train2.format(*out))
#print(variance)
#print(probs[0])
#plot_clusters(it, probs[0], cities[0])
#os.system('eog ./plots/clustering/clustering_it_{}.png'.format(it))
if it%test_freq == 0 and it >= 0:
self.test()
#self.logger.plot_test_logs()
if it%save_freq == 0 and it > 0:
self.save_model(path_model, it)
def test(self):
for i, gen in enumerate(self.test_gens):
print('Test: {}'.format(self.test_gens_labels[i]))
self.test_gen(gen)
def test_gen(self, gen):
iterations_test = int(gen.num_examples_test / self.batch_size)
for it in range(iterations_test):
start = time.time()
batch = gen.sample_batch(self.batch_size, is_training=False, it=it,
cuda=torch.cuda.is_available())
input, W, WTSP, labels, target, cities, perms, costs = extract(batch)
probs, log_probs_samples, pred = self.forward(input, W, cities)
loss_merge, loss_split = self.compute_loss(pred, target, log_probs_samples)
#loss_split -= variance*rf
last = (it == iterations_test-1)
self.logger.add_test_accuracy(pred, labels, perms, W, cities, costs,
last=last, beam_size=beam_size)
self.logger.add_test_loss(loss_split, loss_merge, last=last)
elapsed = time.time() - start
'''if not last and it % 100 == 0:
loss = loss.data.cpu().numpy()[0]
out = ['---', it, loss, logger.accuracy_test_aux[-1],
logger.cost_test_aux[-1], beam_size, elapsed]
print(template_test1.format(*info_test))
print(template_test2.format(*out))'''
print('TEST COST: {} | TEST ACCURACY {}\n'
.format(self.logger.cost_test[-1], self.logger.accuracy_test[-1]))
def main():
# Training settings
parser = argparse.ArgumentParser(
description=
'PyTorch implementation of pre-training of graph neural networks')
parser.add_argument('--device',
type=int,
default=0,
help='which gpu to use if any (default: 0)')
parser.add_argument('--batch_size',
type=int,
default=2,
help='input batch size for training (default: 256)')
parser.add_argument('--epochs',
type=int,
default=100,
help='number of epochs to train (default: 100)')
parser.add_argument('--lr',
type=float,
default=0.001,
help='learning rate (default: 0.001)')
parser.add_argument('--decay',
type=float,
default=0,
help='weight decay (default: 0)')
parser.add_argument(
'--num_layer',
type=int,
default=5,
help='number of GNN message passing layers (default: 5).')
parser.add_argument('--l1', type=int, default=1, help='l1 (default: 1).')
parser.add_argument('--center',
type=int,
default=0,
help='center (default: 0).')
parser.add_argument('--emb_dim',
type=int,
default=300,
help='embedding dimensions (default: 300)')
parser.add_argument('--dropout_ratio',
type=float,
default=0,
help='dropout ratio (default: 0)')
parser.add_argument(
'--neg_samples',
type=int,
default=1,
help='number of negative contexts per positive context (default: 1)')
parser.add_argument(
'--JK',
type=str,
default="last",
help=
'how the node features are combined across layers. last, sum, max or concat'
)
parser.add_argument('--context_pooling',
type=str,
default="mean",
help='how the contexts are pooled (sum, mean, or max)')
parser.add_argument('--gnn_type', type=str, default="gat")
parser.add_argument('--mode',
type=str,
default="cbow",
help="cbow or skipgram")
parser.add_argument('--model_file',
type=str,
default='',
help='filename to output the model')
parser.add_argument('--num_workers',
type=int,
default=4,
help='number of workers for dataset loading')
args = parser.parse_args()
torch.manual_seed(0)
np.random.seed(0)
device = torch.device(
"cuda:" +
str(args.device)) if torch.cuda.is_available() else torch.device("cpu")
if torch.cuda.is_available():
torch.cuda.manual_seed_all(0)
print(args.mode)
#set up dataset
root_unsupervised = 'dataset/unsupervised'
dataset = BioDataset(root_unsupervised,
data_type='unsupervised',
transform=ExtractSubstructureContextPair(
l1=args.l1, center=args.center))
print(dataset[0], "\n", dataset[1], "\n", len(dataset))
print("l1: " + str(args.l1))
print("center: " + str(args.center))
loader = DataLoaderSubstructContext(dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers)
#print(dataset[0])
#set up models, one for pre-training and one for context embeddings
model_substruct = GNN(args.num_layer,
args.emb_dim,
JK=args.JK,
drop_ratio=args.dropout_ratio,
gnn_type=args.gnn_type).to(device)
model_context = GNN(3,
args.emb_dim,
JK=args.JK,
drop_ratio=args.dropout_ratio,
gnn_type=args.gnn_type).to(device)
#set up optimizer for the two GNNs
optimizer_substruct = optim.Adam(model_substruct.parameters(),
lr=args.lr,
weight_decay=args.decay)
optimizer_context = optim.Adam(model_context.parameters(),
lr=args.lr,
weight_decay=args.decay)
for epoch in range(1, args.epochs + 1):
print("====epoch " + str(epoch))
train_loss, train_acc = train(args, model_substruct, model_context,
loader, optimizer_substruct,
optimizer_context, device)
print(train_loss, train_acc)
if not args.model_file == "":
torch.save(model_substruct.state_dict(), args.model_file + ".pth")
def main():
# Training settings
parser = argparse.ArgumentParser(
description=
'PyTorch implementation of pre-training of graph neural networks')
parser.add_argument('--device',
type=int,
default=0,
help='which gpu to use if any (default: 0)')
parser.add_argument('--batch_size',
type=int,
default=256,
help='input batch size for training (default: 256)')
parser.add_argument('--epochs',
type=int,
default=100,
help='number of epochs to train (default: 100)')
parser.add_argument('--lr',
type=float,
default=0.001,
help='learning rate (default: 0.001)')
parser.add_argument('--decay',
type=float,
default=0,
help='weight decay (default: 0)')
parser.add_argument(
'--num_layer',
type=int,
default=5,
help='number of GNN message passing layers (default: 5).')
parser.add_argument('--emb_dim',
type=int,
default=300,
help='embedding dimensions (default: 300)')
parser.add_argument('--dropout_ratio',
type=float,
default=0,
help='dropout ratio (default: 0)')
parser.add_argument('--mask_rate',
type=float,
default=0.15,
help='dropout ratio (default: 0.15)')
parser.add_argument(
'--mask_edge',
type=int,
default=0,
help='whether to mask edges or not together with atoms')
parser.add_argument(
'--JK',
type=str,
default="last",
help=
'how the node features are combined across layers. last, sum, max or concat'
)
parser.add_argument('--dataset',
type=str,
default='zinc_standard_agent',
help='root directory of dataset for pretraining')
parser.add_argument('--output_model_file',
type=str,
default='',
help='filename to output the model')
parser.add_argument('--gnn_type', type=str, default="gin")
parser.add_argument('--seed',
type=int,
default=0,
help="Seed for splitting dataset.")
parser.add_argument('--num_workers',
type=int,
default=8,
help='number of workers for dataset loading')
args = parser.parse_args()
torch.manual_seed(0)
np.random.seed(0)
device = torch.device(
"cuda:" +
str(args.device)) if torch.cuda.is_available() else torch.device("cpu")
if torch.cuda.is_available():
torch.cuda.manual_seed_all(0)
print("num layer: %d mask rate: %f mask edge: %d" %
(args.num_layer, args.mask_rate, args.mask_edge))
#set up dataset and transform function.
dataset = MoleculeDataset("dataset/" + args.dataset,
dataset=args.dataset,
transform=MaskAtom(num_atom_type=119,
num_edge_type=5,
mask_rate=args.mask_rate,
mask_edge=args.mask_edge))
loader = DataLoaderMasking(dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers)
#set up models, one for pre-training and one for context embeddings
model = GNN(args.num_layer,
args.emb_dim,
JK=args.JK,
drop_ratio=args.dropout_ratio,
gnn_type=args.gnn_type).to(device)
linear_pred_atoms = torch.nn.Linear(args.emb_dim, 119).to(device)
linear_pred_bonds = torch.nn.Linear(args.emb_dim, 4).to(device)
model_list = [model, linear_pred_atoms, linear_pred_bonds]
#set up optimizers
optimizer_model = optim.Adam(model.parameters(),
lr=args.lr,
weight_decay=args.decay)
optimizer_linear_pred_atoms = optim.Adam(linear_pred_atoms.parameters(),
lr=args.lr,
weight_decay=args.decay)
optimizer_linear_pred_bonds = optim.Adam(linear_pred_bonds.parameters(),
lr=args.lr,
weight_decay=args.decay)
optimizer_list = [
optimizer_model, optimizer_linear_pred_atoms,
optimizer_linear_pred_bonds
]
for epoch in range(1, args.epochs + 1):
print("====epoch " + str(epoch))
train_loss, train_acc_atom, train_acc_bond = train(
args, model_list, loader, optimizer_list, device)
print(train_loss, train_acc_atom, train_acc_bond)
if not args.output_model_file == "":
torch.save(model.state_dict(), args.output_model_file + ".pth")
def main():
# Training settings
parser = argparse.ArgumentParser(
description=
'PyTorch implementation of pre-training of graph neural networks')
parser.add_argument('--device',
type=int,
default=0,
help='which gpu to use if any (default: 0)')
parser.add_argument('--batch_size',
type=int,
default=32,
help='input batch size for training (default: 256)')
parser.add_argument('--epochs',
type=int,
default=100,
help='number of epochs to train (default: 100)')
parser.add_argument('--lr',
type=float,
default=0.001,
help='learning rate (default: 0.001)')
parser.add_argument('--decay',
type=float,
default=0,
help='weight decay (default: 0)')
parser.add_argument(
'--num_layer',
type=int,
default=5,
help='number of GNN message passing layers (default: 5).')
parser.add_argument('--emb_dim',
type=int,
default=300,
help='embedding dimensions (default: 300)')
parser.add_argument('--dropout_ratio',
type=float,
default=0,
help='dropout ratio (default: 0)')
parser.add_argument('--mask_rate',
type=float,
default=0.15,
help='dropout ratio (default: 0.15)')
parser.add_argument(
'--JK',
type=str,
default="last",
help=
'how the node features are combined across layers. last, sum, max or concat'
)
parser.add_argument('--gnn_type', type=str, default="gsan")
parser.add_argument('--model_file',
type=str,
default='',
help='filename to output the model')
parser.add_argument('--seed',
type=int,
default=0,
help="Seed for splitting dataset.")
parser.add_argument('--num_workers',
type=int,
default=8,
help='number of workers for dataset loading')
args = parser.parse_args()
torch.manual_seed(0)
np.random.seed(0)
device = torch.device(
"cuda:" +
str(args.device)) if torch.cuda.is_available() else torch.device("cpu")
if torch.cuda.is_available():
torch.cuda.manual_seed_all(0)
print("num layer: %d mask rate: %f" % (args.num_layer, args.mask_rate))
#set up dataset
root_unsupervised = 'dataset/unsupervised'
dataset = BioDataset(root_unsupervised,
data_type='unsupervised',
transform=MaskEdge(mask_rate=args.mask_rate))
print(dataset)
loader = DataLoaderMasking(dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers)
#set up models, one for pre-training and one for context embeddings
model = GNN(args.num_layer,
args.emb_dim,
JK=args.JK,
drop_ratio=args.dropout_ratio,
gnn_type=args.gnn_type).to(device)
#Linear layer for classifying different edge types
linear_pred_edges = torch.nn.Linear(args.emb_dim, 7).to(device)
model_list = [model, linear_pred_edges]
#set up optimizers
optimizer_model = optim.Adam(model.parameters(),
lr=args.lr,
weight_decay=args.decay)
optimizer_linear_pred_edges = optim.Adam(linear_pred_edges.parameters(),
lr=args.lr,
weight_decay=args.decay)
optimizer_list = [optimizer_model, optimizer_linear_pred_edges]
for epoch in range(1, args.epochs + 1):
print("====epoch " + str(epoch))
train_loss, train_acc = train(args, model_list, loader, optimizer_list,
device)
print("loss :", train_loss, "accuracy :", train_acc)
if not args.model_file == "":
torch.save(model.state_dict(), args.model_file + ".pth")
print(
f"Top {k}-Hit Accuracy: {np.mean(np.array(list_acc))} and std: {np.std(np.array(list_acc))}"
)
print(
f"Kendall-Tau scores is: {np.mean(np.array(list_kt))} and std: {np.std(np.array(list_kt))}"
)
#Model parameters
hidden = 20
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
print(f"Device selected: {device}")
model = GNN(ninput=model_size, nhid=hidden, dropout=0.6)
model.to(device)
optimizer = torch.optim.Adam(model.parameters(), lr=0.0005)
num_epoch = 10
print("\nStaring Training")
print(f"Total Number of epoches: {num_epoch}")
for e in range(num_epoch):
print(f"Epoch number: {e+1}/{num_epochs}")
train(list_adj_train, list_adj_t_train, list_num_node_train, bc_mat_train)
with torch.no_grad():
test(list_adj_test,
list_adj_t_test,
list_num_node_test,
bc_mat_test,
k=10)
def main():
"""
"""
args = parser.parse_args()
if args.cuda:
device = torch.device("cuda:0")
else:
device = torch.device("cpu")
data_dir = tools.select_data_dir()
trainset = Sudoku(data_dir, train=True)
testset = Sudoku(data_dir, train=False)
trainloader = DataLoader(trainset, batch_size=args.batch_size, collate_fn=collate)
testloader = DataLoader(testset, batch_size=args.batch_size, collate_fn=collate)
# Create network
gnn = GNN(device)
if not args.skip_training:
optimizer = torch.optim.Adam(gnn.parameters(), lr=args.learning_rate)
loss_method = nn.CrossEntropyLoss(reduction="mean")
for epoch in range(args.n_epochs):
for i, data in enumerate(trainloader, 0):
inputs, targets, src_ids, dst_ids = data
inputs, targets = inputs.to(device), targets.to(device)
src_ids, dst_ids = src_ids.to(device), dst_ids.to(device)
optimizer.zero_grad()
gnn.zero_grad()
output = gnn.forward(inputs, src_ids, dst_ids)
output = output.to(device)
output = output.view(-1, output.shape[2])
targets = targets.repeat(7, 1)
targets = targets.view(-1)
loss = loss_method(output, targets)
loss.backward()
optimizer.step()
fraction = fraction_of_solved_puzzles(gnn, testloader, device)
print("Train Epoch {}: Loss: {:.6f} Fraction: {}".format(epoch + 1, loss.item(), fraction))
tools.save_model(gnn, "7_gnn.pth")
else:
gnn = GNN(device)
tools.load_model(gnn, "7_gnn.pth", device)
# Evaluate the trained model
# Get graph iterations for some test puzzles
with torch.no_grad():
inputs, targets, src_ids, dst_ids = iter(testloader).next()
inputs, targets = inputs.to(device), targets.to(device)
src_ids, dst_ids = src_ids.to(device), dst_ids.to(device)
batch_size = inputs.size(0) // 81
outputs = gnn(inputs, src_ids, dst_ids).to(device) # [n_iters, n_nodes, 9]
solution = outputs.view(gnn.n_iters, batch_size, 9, 9, 9).to(device)
final_solution = solution[-1].argmax(dim=3).to(device)
print("Solved puzzles in the current mini-batch:")
print((final_solution.view(-1, 81) == targets.view(batch_size, 81)).all(dim=1))
# Visualize graph iteration for one of the puzzles
ix = 0
for i in range(gnn.n_iters):
tools.draw_sudoku(solution[i, 0], logits=True)
fraction_solved = fraction_of_solved_puzzles(gnn, testloader,device)
print(f"Accuracy {fraction_solved}")
def main():
# Training settings
parser = argparse.ArgumentParser(
description=
"PyTorch implementation of pre-training of graph neural networks")
parser.add_argument("--device",
type=int,
default=0,
help="which gpu to use if any (default: 0)")
parser.add_argument(
"--batch_size",
type=int,
default=256,
help="input batch size for training (default: 256)",
)
parser.add_argument(
"--epochs",
type=int,
default=100,
help="number of epochs to train (default: 100)",
)
parser.add_argument("--lr",
type=float,
default=0.001,
help="learning rate (default: 0.001)")
parser.add_argument("--decay",
type=float,
default=0,
help="weight decay (default: 0)")
parser.add_argument(
"--num_layer",
type=int,
default=5,
help="number of GNN message passing layers (default: 5).",
)
parser.add_argument("--csize",
type=int,
default=3,
help="context size (default: 3).")
parser.add_argument("--emb_dim",
type=int,
default=300,
help="embedding dimensions (default: 300)")
parser.add_argument("--dropout_ratio",
type=float,
default=0,
help="dropout ratio (default: 0)")
parser.add_argument(
"--neg_samples",
type=int,
default=1,
help="number of negative contexts per positive context (default: 1)",
)
parser.add_argument(
"--JK",
type=str,
default="last",
help="how the node features are combined across layers."
"last, sum, max or concat",
)
parser.add_argument(
"--context_pooling",
type=str,
default="mean",
help="how the contexts are pooled (sum, mean, or max)",
)
parser.add_argument("--mode",
type=str,
default="cbow",
help="cbow or skipgram")
parser.add_argument(
"--dataset",
type=str,
default="contextPred/chem/dataset/zinc_standard_agent",
help="root directory of dataset for pretraining",
)
parser.add_argument("--output_model_file",
type=str,
default="",
help="filename to output the model")
parser.add_argument("--gnn_type", type=str, default="gin")
parser.add_argument("--seed",
type=int,
default=0,
help="Seed for splitting dataset.")
parser.add_argument(
"--num_workers",
type=int,
default=8,
help="number of workers for dataset loading",
)
args = parser.parse_args()
torch.manual_seed(0)
np.random.seed(0)
device = (torch.device("cuda:" + str(args.device))
if torch.cuda.is_available() else torch.device("cpu"))
if torch.cuda.is_available():
torch.cuda.manual_seed_all(0)
l1 = args.num_layer - 1
l2 = l1 + args.csize
print(args.mode)
print("num layer: %d l1: %d l2: %d" % (args.num_layer, l1, l2))
# set up dataset and transform function.
dataset = MoleculeDataset(
args.dataset,
dataset=os.path.basename(args.dataset),
transform=ExtractSubstructureContextPair(args.num_layer, l1, l2),
)
loader = DataLoaderSubstructContext(dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers)
# set up models, one for pre-training and one for context embeddings
model_substruct = GNN(
args.num_layer,
args.emb_dim,
JK=args.JK,
drop_ratio=args.dropout_ratio,
gnn_type=args.gnn_type,
).to(device)
model_context = GNN(
int(l2 - l1),
args.emb_dim,
JK=args.JK,
drop_ratio=args.dropout_ratio,
gnn_type=args.gnn_type,
).to(device)
# set up optimizer for the two GNNs
optimizer_substruct = optim.Adam(model_substruct.parameters(),
lr=args.lr,
weight_decay=args.decay)
optimizer_context = optim.Adam(model_context.parameters(),
lr=args.lr,
weight_decay=args.decay)
for epoch in range(1, args.epochs + 1):
print("====epoch " + str(epoch))
train_loss, train_acc = train(
args,
model_substruct,
model_context,
loader,
optimizer_substruct,
optimizer_context,
device,
)
print(train_loss, train_acc)
if not args.output_model_file == "":
torch.save(model_substruct.state_dict(),
args.output_model_file + ".pth")
gen.load_dataset()
clip_grad = 40.0
iterations = 5000
batch_size = 20
num_features = 10
num_layers = 5
J = 4
rf = 10.0 # regularization factor
Split = Split_GNN(batch_size, num_features, num_layers, J + 2, dim_input=3)
Tsp = GNN(num_features, num_layers, J + 2, dim_input=3)
Merge = GNN(num_features, num_layers, J + 2, dim_input=3)
optimizer_split = optim.RMSprop(Split.parameters())
optimizer_tsp = optim.Adamax(Tsp.parameters(), lr=1e-3)
optimizer_merge = optim.Adamax(Merge.parameters(), lr=1e-3)
for it in range(iterations):
sample = gen.sample_batch(batch_size, cuda=torch.cuda.is_available())
input, W, WTSP, labels, target, cities, perms, costs = extract(sample)
scores, probs = Split(input)
variance = compute_variance(probs)
sample, log_probs_samples = sample_one(probs, mode='train')
WW, x, Phi = compute_operators(W.data, sample, J)
x = torch.cat((x.unsqueeze(2), cities), 2)
y = WW[:, :, :, 1]
WW = Variable(WW).type(dtype)
x = Variable(x).type(dtype)
y = Variable(y).type(dtype)
#print(WW, x, y)
