def train(args):
datasets = [i for i in range(5)]
# Remove the leave out dataset from the datasets
datasets.remove(args.leaveDataset)
# datasets = [0]
# args.leaveDataset = 0
# Construct the DataLoader object
dataloader = DataLoader(args.batch_size,
args.seq_length + 1,
datasets,
forcePreProcess=True)
# Construct the ST-graph object
stgraph = ST_GRAPH(1, args.seq_length + 1)
# Log directory
log_directory = 'log_w_goal/'
log_directory += str(args.leaveDataset) + '/'
log_directory += 'log_attention'
# Logging file
log_file_curve = open(os.path.join(log_directory, 'log_curve.txt'), 'w')
log_file = open(os.path.join(log_directory, 'val.txt'), 'w')
# Save directory
save_directory = 'save_w_goal/'
save_directory += str(args.leaveDataset) + '/'
save_directory += 'save_attention'
# Open the configuration file
with open(os.path.join(save_directory, 'config.pkl'), 'wb') as f:
pickle.dump(args, f)
# Path to store the checkpoint file
def checkpoint_path(x):
return os.path.join(save_directory, 'srnn_model_' + str(x) + '.tar')
# Initialize net
net = SRNN(args)
net.cuda()
optimizer = torch.optim.Adam(net.parameters(), lr=args.learning_rate)
# optimizer = torch.optim.RMSprop(net.parameters(), lr=args.learning_rate, momentum=0.0001, centered=True)
learning_rate = args.learning_rate
print('Training begin')
best_val_loss = 100
best_epoch = 0
# Training
for epoch in range(args.num_epochs):
dataloader.reset_batch_pointer(valid=False)
loss_epoch = 0
# For each batch
for batch in range(dataloader.num_batches):
start = time.time()
# Get batch data
x, _, _, d = dataloader.next_batch(randomUpdate=True)
import pdb
pdb.set_trace()
# Loss for this batch
loss_batch = 0
# For each sequence in the batch
for sequence in range(dataloader.batch_size):
# Construct the graph for the current sequence
stgraph.readGraph([x[sequence]])
nodes, edges, nodesPresent, edgesPresent = stgraph.getSequence(
)
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float()).cuda()
edges = Variable(torch.from_numpy(edges).float()).cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(
torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
hidden_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes,
args.human_human_edge_rnn_size)).cuda()
cell_states_node_RNNs = Variable(
torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
cell_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes,
args.human_human_edge_rnn_size)).cuda()
# Zero out the gradients
net.zero_grad()
optimizer.zero_grad()
# Forward prop
outputs, _, _, _, _, _ = net(
nodes[:args.seq_length], edges[:args.seq_length],
nodesPresent[:-1], edgesPresent[:-1],
hidden_states_node_RNNs, hidden_states_edge_RNNs,
cell_states_node_RNNs, cell_states_edge_RNNs)
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:],
nodesPresent[1:], args.pred_length)
loss_batch += loss.data[0]
# Compute gradients
loss.backward()
# Clip gradients
torch.nn.utils.clip_grad_norm(net.parameters(), args.grad_clip)
# Update parameters
optimizer.step()
# Reset the stgraph
stgraph.reset()
end = time.time()
loss_batch = loss_batch / dataloader.batch_size
loss_epoch += loss_batch
print('{}/{} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}'.
format(epoch * dataloader.num_batches + batch,
args.num_epochs * dataloader.num_batches, epoch,
loss_batch, end - start))
# Compute loss for the entire epoch
loss_epoch /= dataloader.num_batches
# Log it
log_file_curve.write(str(epoch) + ',' + str(loss_epoch) + ',')
# Validation
dataloader.reset_batch_pointer(valid=True)
loss_epoch = 0
for batch in range(dataloader.valid_num_batches):
# Get batch data
x, _, d = dataloader.next_valid_batch(randomUpdate=False)
# Loss for this batch
loss_batch = 0
for sequence in range(dataloader.batch_size):
stgraph.readGraph([x[sequence]])
nodes, edges, nodesPresent, edgesPresent = stgraph.getSequence(
)
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float()).cuda()
edges = Variable(torch.from_numpy(edges).float()).cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(
torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
hidden_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes,
args.human_human_edge_rnn_size)).cuda()
cell_states_node_RNNs = Variable(
torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
cell_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes,
args.human_human_edge_rnn_size)).cuda()
outputs, _, _, _, _, _ = net(
nodes[:args.seq_length], edges[:args.seq_length],
nodesPresent[:-1], edgesPresent[:-1],
hidden_states_node_RNNs, hidden_states_edge_RNNs,
cell_states_node_RNNs, cell_states_edge_RNNs)
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:],
nodesPresent[1:], args.pred_length)
loss_batch += loss.data[0]
# Reset the stgraph
stgraph.reset()
loss_batch = loss_batch / dataloader.batch_size
loss_epoch += loss_batch
loss_epoch = loss_epoch / dataloader.valid_num_batches
# Update best validation loss until now
if loss_epoch < best_val_loss:
best_val_loss = loss_epoch
best_epoch = epoch
# Record best epoch and best validation loss
print('(epoch {}), valid_loss = {:.3f}'.format(epoch, loss_epoch))
print('Best epoch {}, Best validation loss {}'.format(
best_epoch, best_val_loss))
# Log it
log_file_curve.write(str(loss_epoch) + '\n')
# Save the model after each epoch
print('Saving model')
torch.save(
{
'epoch': epoch,
'state_dict': net.state_dict(),
'optimizer_state_dict': optimizer.state_dict()
}, checkpoint_path(epoch))
# Record the best epoch and best validation loss overall
print('Best epoch {}, Best validation loss {}'.format(
best_epoch, best_val_loss))
# Log it
log_file.write(str(best_epoch) + ',' + str(best_val_loss))
# Close logging files
log_file.close()
log_file_curve.close()
def train(args):
datasets = [i for i in range(5)]
# Remove the leave out dataset from the datasets
datasets.remove(args.leaveDataset)
# datasets = [0]
# args.leaveDataset = 0
#
# Construct the ST-graph object
filedir = '../beijing/'
grp = My_Graph(args.seq_length + 1, filedir + 'W.pk',
filedir + 'traffic_data.csv')
my_datapt = My_DataPointer(grp.getFrameNum(), args.seq_length + 1,
args.batch_size)
# Log directory
log_directory = '../log-beijing-16/'
if not os.path.exists(log_directory):
os.makedirs(log_directory)
# Logging file
log_file_curve = open(os.path.join(log_directory, 'log_curve.txt'), 'w')
log_file = open(os.path.join(log_directory, 'val.txt'), 'w')
# Save directory
save_directory = '../save-beijing-16/'
if not os.path.exists(save_directory):
os.makedirs(save_directory)
# Open the configuration file
with open(os.path.join(save_directory, 'config.pkl'), 'wb') as f:
pickle.dump(args, f)
# Path to store the checkpoint file
def checkpoint_path(x):
return os.path.join(save_directory, 'srnn_model_' + str(x) + '.tar')
# Initialize net
net = SRNN(args)
net.cuda()
if (args.load >= 0):
load_net(save_directory, args.load, net)
optimizer = torch.optim.Adam(net.parameters(), lr=args.learning_rate)
# optimizer = torch.optim.RMSprop(net.parameters(), lr=args.learning_rate, momentum=0.0001, centered=True)
learning_rate = args.learning_rate
print('Training begin')
best_val_loss = 100
best_epoch = 0
print(f"train_batches={my_datapt.num_batches()}")
print(f"val_batches={my_datapt.valid_num_batches()}")
# Training
for epoch in range(args.num_epochs):
log_output = open(log_directory + 'log_output.py', "w")
log_output.write("pairs=[\n")
loss_epoch = 0
my_datapt.train_reset()
# For each batch
for batch in range(my_datapt.num_batches()):
start = time.time()
# Loss for this batch
loss_batch = 0
# For each sequence in the batch
for st in my_datapt.get_batch():
# Construct the graph for the current sequence
t1 = time.time()
nodes, edges, nodesPresent, edgesPresent = grp.getSequence(st)
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float()).cuda()
edges = Variable(torch.from_numpy(edges).float()).cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(
torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
hidden_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes,
args.human_human_edge_rnn_size)).cuda()
cell_states_node_RNNs = Variable(
torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
cell_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes,
args.human_human_edge_rnn_size)).cuda()
# Zero out the gradients
net.zero_grad()
optimizer.zero_grad()
# print(f"grp time = {time.time()-t1}")
# Forward prop
outputs, _, _, _, _, _ = net(
nodes[:args.seq_length], edges[:args.seq_length],
nodesPresent[:-1], edgesPresent[:-1],
hidden_states_node_RNNs, hidden_states_edge_RNNs,
cell_states_node_RNNs, cell_states_edge_RNNs)
log_output.write(
f"[{outputs[-1,:,0].data.cpu().numpy().tolist()},{nodes[-1,:,0].data.cpu().numpy().tolist()}],\n"
)
# print(f"forward time = {time.time()-t1}")
# Compute loss
loss = getL2Loss(outputs, nodes[1:], nodesPresent[1:],
args.pred_length)
print(f"start={st},loss={loss}")
# print(f"loss time = {time.time()-t1}")
loss_batch += loss.data
# Compute gradients
loss.backward()
# print(f"backward time = {time.time()-t1}")
# Clip gradients
torch.nn.utils.clip_grad_norm(net.parameters(), args.grad_clip)
# Update parameters
optimizer.step()
# print(f"step time = {time.time()-t1}")
end = time.time()
loss_batch = loss_batch / args.batch_size
loss_epoch += loss_batch
print('{}/{} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}'.
format(epoch * my_datapt.num_batches() + batch,
args.num_epochs * my_datapt.num_batches(), epoch,
loss_batch, end - start))
# Compute loss for the entire epoch
loss_epoch /= my_datapt.num_batches()
# Log it
log_file_curve.write(str(epoch) + ',' + str(loss_epoch) + ',')
log_output.write("]\n")
# Save the model after each epoch
print('Saving model')
torch.save(
{
'epoch': epoch,
'state_dict': net.state_dict(),
'optimizer_state_dict': optimizer.state_dict()
}, checkpoint_path(epoch))
# Validation
my_datapt.val_reset()
loss_epoch = 0
with torch.no_grad():
for batch in range(my_datapt.valid_num_batches()):
# Loss for this batch
loss_batch = 0
for start in my_datapt.get_batch_val():
nodes, edges, nodesPresent, edgesPresent = grp.getSequence(
start)
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float()).cuda()
edges = Variable(torch.from_numpy(edges).float()).cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(
torch.zeros(numNodes,
args.human_node_rnn_size)).cuda()
hidden_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes,
args.human_human_edge_rnn_size)).cuda()
cell_states_node_RNNs = Variable(
torch.zeros(numNodes,
args.human_node_rnn_size)).cuda()
cell_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes,
args.human_human_edge_rnn_size)).cuda()
outputs, _, _, _, _, _ = net(
nodes[:args.seq_length], edges[:args.seq_length],
nodesPresent[:-1], edgesPresent[:-1],
hidden_states_node_RNNs, hidden_states_edge_RNNs,
cell_states_node_RNNs, cell_states_edge_RNNs)
# Compute loss
loss = getL2Loss(outputs, nodes[1:], nodesPresent[1:],
args.pred_length)
loss_batch += loss.data
loss_batch = loss_batch / args.batch_size
loss_epoch += loss_batch
loss_epoch = loss_epoch / my_datapt.valid_num_batches()
# Update best validation loss until now
if loss_epoch < best_val_loss:
best_val_loss = loss_epoch
best_epoch = epoch
# Record best epoch and best validation loss
print('(epoch {}), valid_loss = {:.3f}'.format(epoch, loss_epoch))
print('Best epoch {}, Best validation loss {}'.format(
best_epoch, best_val_loss))
# Log it
log_file_curve.write(str(loss_epoch) + '\n')
# Record the best epoch and best validation loss overall
print('Best epoch {}, Best validation loss {}'.format(
best_epoch, best_val_loss))
# Log it
log_file.write(str(best_epoch) + ',' + str(best_val_loss))
# Close logging files
log_file.close()
log_file_curve.close()
def train(args):
## 19th Feb : move training files for 3 && 4 to fine_obstacle under copy_2
# os.chdir('/home/serene/PycharmProjects/srnn-pytorch-master/')
# context_factor is an experiment for including potential destinations of pedestrians in the graph.
# did not yield good improvement
os.chdir('/home/serene/Documents/copy_srnn_pytorch/srnn-pytorch-master')
# os.chdir('/home/siri0005/srnn-pytorch-master')
# base_dir = '../fine_obstacle/prelu/p_02/'
base_dir = '../fine_obstacle/prelu/p_02/'
# '../MultiNodeAttn_HH/'
# os.chdir('/home/serene/Documents/KITTIData/GT')
datasets = [i for i in [0,1,2,3,4]]
# Remove the leave out dataset from the datasets
datasets.remove(args.leaveDataset)
# datasets = [0]
# args.leaveDataset = 0
# Construct the DataLoader object
dataloader = DataLoader(args.batch_size, args.seq_length + 1, datasets, forcePreProcess=True)
# Construct the ST-graph object
stgraph = ST_GRAPH(1, args.seq_length + 1)
# Log directory
# log_directory = './log/world_data/normalized_01/'
log_directory = base_dir+'log/'
log_directory += str(args.leaveDataset) + '/'
log_directory += 'log_attention/'
# Logging file
log_file_curve = open(os.path.join(log_directory, 'log_curve.txt'), 'w')
log_file = open(os.path.join(log_directory, 'val.txt'), 'w')
# Save directory
# save_directory = './save/world_data/normalized_01/'
save_directory = base_dir+'save/'
save_directory += str(args.leaveDataset)+'/'
save_directory += 'save_attention/'
# log RELU parameter
param_log_dir = save_directory + 'param_log.txt'
param_log = open(param_log_dir , 'w')
# Open the configuration file
with open(os.path.join(save_directory, 'config.pkl'), 'wb') as f:
pickle.dump(args, f)
# Path to store the checkpoint file
def checkpoint_path(x):
return os.path.join(save_directory, 'srnn_model_'+str(x)+'.tar')
# Initialize net
net = SRNN(args)
# srnn_model = SRNN(args)
# net = torch.nn.DataParallel(srnn_model)
# CUDA_VISIBLE_DEVICES = 1
net.cuda()
optimizer = torch.optim.Adam(net.parameters(), lr=args.learning_rate)
# optimizer = torch.optim.RMSprop(net.parameters(), lr=args.learning_rate, momentum=0.0001, centered=True)
# learning_rate = args.learning_rate
print('Training begin')
best_val_loss = 100
best_epoch = 0
# start_epoch = 0
# if args.leaveDataset == 3:
# start_epoch =checkpoint_path(0)
# ckp = torch.load(checkpoint_path(3))
# net.load_state_dict(ckp['state_dict'])
# optimizer.load_state_dict(ckp['optimizer_state_dict'])
# ckp = torch.load(checkpoint_path(4))
# net.load_state_dict(ckp['state_dict'])
# optimizer.load_state_dict(ckp['optimizer_state_dict'])
# last_epoch = ckp['epoch']
# rang = range(last_epoch, args.num_epochs, 1)
rang = range(args.num_epochs)
# Training
for epoch in rang:
dataloader.reset_batch_pointer(valid=False)
loss_epoch = 0
# if args.leaveDataset == 2 and epoch == 0:
# dataloader.num_batches = dataloader.num_batches + start_epoch
# epoch += start_epoch
# For each batch
stateful = True # flag that controls transmission of previous hidden states to current hidden states vectors.
# Part of statefulness
for batch in range( dataloader.num_batches):
start = time.time()
# Get batch data
x, _, _, d = dataloader.next_batch(randomUpdate=True) ## shuffling input + stateless lstm
# Loss for this batch
loss_batch = 0
# For each sequence in the batch
for sequence in range(dataloader.batch_size):
# Construct the graph for the current sequence
stgraph.readGraph([x[sequence]],d, args.distance_thresh)
nodes, edges, nodesPresent, edgesPresent,obsNodes, obsEdges, obsNodesPresent, obsEdgesPresent = stgraph.getSequence() #
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float()).cuda()
edges = Variable(torch.from_numpy(edges).float()).cuda()
obsNodes = Variable(torch.from_numpy(obsNodes).float()).cuda()
obsEdges = Variable(torch.from_numpy(obsEdges).float()).cuda()
## Modification : reset hidden and cell states only once after every batch ; keeping states updated during sequences 31st JAN
# Define hidden states
numNodes = nodes.size()[1]
numObsNodes = obsNodes.size()[1]
# if not stateful:
hidden_states_node_RNNs = Variable(torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
hidden_states_edge_RNNs = Variable(torch.zeros(numNodes * numNodes, args.human_human_edge_rnn_size)).cuda()
cell_states_node_RNNs = Variable(torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
cell_states_edge_RNNs = Variable(torch.zeros(numNodes * numNodes, args.human_human_edge_rnn_size)).cuda()
## new update : 25th JAN , let the hidden state transition begin with negative ones
## such initialization did not lead to any new learning results, network converged quickly and loss did not decrease below
# -6
hidden_states_obs_node_RNNs = Variable(torch.zeros(numObsNodes, args.obs_node_rnn_size)).cuda()
hidden_states_obs_edge_RNNs = Variable(torch.zeros(numNodes * numNodes, args.human_obstacle_edge_rnn_size)).cuda()
cell_states_obs_node_RNNs = Variable(torch.zeros(numObsNodes, args.obs_node_rnn_size)).cuda()
cell_states_obs_edge_RNNs = Variable(torch.zeros(numNodes * numNodes, args.human_obstacle_edge_rnn_size)).cuda()
net.zero_grad()
optimizer.zero_grad()
# Forward prop
# _ = \
outputs, h_node_rnn, h_edge_rnn, cell_node_rnn, cell_edge_rnn,o_h_node_rnn, o_h_edge_rnn, o_cell_node_rnn, o_cell_edge_rnn, _ = \
net(nodes[:args.seq_length], edges[:args.seq_length], nodesPresent[:-1], edgesPresent[:-1],
hidden_states_node_RNNs, hidden_states_edge_RNNs, cell_states_node_RNNs, cell_states_edge_RNNs,
obsNodes[:args.seq_length], obsEdges[:args.seq_length], obsNodesPresent[:-1],
obsEdgesPresent[:-1]
,hidden_states_obs_node_RNNs, hidden_states_obs_edge_RNNs, cell_states_obs_node_RNNs,
cell_states_obs_edge_RNNs)
# # else:
# # if len(nodes) == len(hidden_states_node_RNNs): # no additional nodes introduced in graph
# # hidden_states_node_RNNs = Variable(h_node_rnn).cuda()
# # cell_states_node_RNNs = Variable(cell_node_rnn).cuda()
# # else: # for now number of nodes is only increasing in time as new pedestrians are detected in the scene
# # pad_size = len(nodes) - len(hidden_states_node_RNNs)
# cell_states_node_RNNs = Variable(np.pad(cell_node_rnn, pad_size)).cuda()
# if sequence > 0:
# hidden_states_node_RNNs = Variable(h_node_rnn).resize(hidden_states_node_RNNs.cpu().size())
# hidden_states_edge_RNNs = h_edge_rnn
# cell_states_node_RNNs = cell_node_rnn
# cell_states_edge_RNNs = cell_edge_rnn
# new_num_nodes = h_node_rnn.size()[0] - hidden_states_node_RNNs.size()[0]
# if h_node_rnn.size()[0] - hidden_states_node_RNNs.size()[0] >=1:
# np.pad(hidden_states_node_RNNs.cpu() , new_num_nodes, mode='constant').cuda()
# hidden_states_obs_node_RNNs = o_h_node_rnn
# hidden_states_obs_edge_RNNs = o_h_edge_rnn
# cell_states_obs_node_RNNs = o_cell_node_rnn
# cell_states_obs_edge_RNNs = o_cell_edge_rnn
# Zero out the gradients
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:], nodesPresent[1:], args.pred_length)
loss_batch += loss.data[0]
# Compute gradients
loss.backward(retain_variables=True)
param_log.write(str(net.alpha.data[0]) + '\n')
# Clip gradients
torch.nn.utils.clip_grad_norm(net.parameters(), args.grad_clip)
# Update parameters
optimizer.step()
# Reset the stgraph
stgraph.reset()
end = time.time()
loss_batch = loss_batch / dataloader.batch_size
loss_epoch += loss_batch
print(
'{}/{} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}'.format(epoch * dataloader.num_batches + batch,
args.num_epochs * dataloader.num_batches,
epoch,
loss_batch, end - start))
# Compute loss for the entire epoch
loss_epoch /= dataloader.num_batches
# Log it
log_file_curve.write(str(epoch)+','+str(loss_epoch)+',')
# Validation
dataloader.reset_batch_pointer(valid=True)
loss_epoch = 0
# dataloader.valid_num_batches = dataloader.valid_num_batches + start_epoch
for batch in range(dataloader.valid_num_batches):
# Get batch data
x, _, d = dataloader.next_valid_batch(randomUpdate=False)## stateless lstm without shuffling
# Loss for this batch
loss_batch = 0
for sequence in range(dataloader.batch_size):
stgraph.readGraph([x[sequence]], d, args.distance_thresh)
nodes, edges, nodesPresent, edgesPresent,obsNodes, obsEdges, obsNodesPresent, obsEdgesPresent = stgraph.getSequence() #
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float()).cuda()
edges = Variable(torch.from_numpy(edges).float()).cuda()
obsNodes = Variable(torch.from_numpy(obsNodes).float()).cuda()
obsEdges = Variable(torch.from_numpy(obsEdges).float()).cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
hidden_states_edge_RNNs = Variable(torch.zeros(numNodes * numNodes, args.human_human_edge_rnn_size)).cuda()
cell_states_node_RNNs = Variable(torch.zeros(numNodes, args.human_node_rnn_size)).cuda()
cell_states_edge_RNNs = Variable(torch.zeros(numNodes * numNodes, args.human_human_edge_rnn_size)).cuda()
numObsNodes = obsNodes.size()[1]
hidden_states_obs_node_RNNs = Variable(torch.zeros(numObsNodes, args.obs_node_rnn_size)).cuda()
hidden_states_obs_edge_RNNs = Variable(torch.zeros(numNodes * numNodes, args.human_obstacle_edge_rnn_size)).cuda()
cell_states_obs_node_RNNs = Variable(torch.zeros(numObsNodes, args.obs_node_rnn_size)).cuda()
cell_states_obs_edge_RNNs = Variable(torch.zeros(numNodes * numNodes, args.human_obstacle_edge_rnn_size)).cuda()
#
outputs, h_node_rnn, h_edge_rnn, cell_node_rnn, cell_edge_rnn,o_h_node_rnn ,o_h_edge_rnn, o_cell_node_rnn, o_cell_edge_rnn, _= net(nodes[:args.seq_length], edges[:args.seq_length], nodesPresent[:-1],
edgesPresent[:-1], hidden_states_node_RNNs, hidden_states_edge_RNNs,
cell_states_node_RNNs, cell_states_edge_RNNs
, obsNodes[:args.seq_length], obsEdges[:args.seq_length],
obsNodesPresent[:-1], obsEdgesPresent[:-1]
,hidden_states_obs_node_RNNs, hidden_states_obs_edge_RNNs,
cell_states_obs_node_RNNs, cell_states_obs_edge_RNNs)
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:], nodesPresent[1:], args.pred_length)
loss_batch += loss.data[0]
# Reset the stgraph
stgraph.reset()
loss_batch = loss_batch / dataloader.batch_size
loss_epoch += loss_batch
loss_epoch = loss_epoch / dataloader.valid_num_batches
# Update best validation loss until now
if loss_epoch < best_val_loss:
best_val_loss = loss_epoch
best_epoch = epoch
# Record best epoch and best validation loss
print('(epoch {}), valid_loss = {:.3f}'.format(epoch, loss_epoch))
print('Best epoch {}, Best validation loss {}'.format(best_epoch, best_val_loss))
# Log it
log_file_curve.write(str(loss_epoch) + '\n')
# Save the model after each epoch
print('Saving model')
torch.save({
'epoch': epoch,
'state_dict': net.state_dict(),
'optimizer_state_dict': optimizer.state_dict()
}, checkpoint_path(epoch))
# Record the best epoch and best validation loss overall
print('Best epoch {}, Best validation loss {}'.format(best_epoch, best_val_loss))
# Log it
log_file.write(str(best_epoch) + ',' + str(best_val_loss))
# Close logging files
log_file.close()
log_file_curve.close()
param_log.close()
def train(args):
print("INPUT SEQUENCE LENGTH: {}".format(args.seq_length))
print("OUTPUT SEQUENCE LENGTH: {}".format(args.pred_length))
# Construct the DataLoader object
dataloader = DataLoader(args.batch_size,
args.seq_length + 1,
forcePreProcess=False)
# Construct the ST-graph object
stgraph = ST_GRAPH(1, args.seq_length + 1)
# Log directory
log_directory = "../log/"
# Logging file
log_file_curve = open(os.path.join(log_directory, "log_curve.txt"), "w")
log_file = open(os.path.join(log_directory, "val.txt"), "w")
# Save directory
save_directory = "../../save_weight/"
# Open the configuration file # 현재 argument 세팅 저장.
with open(os.path.join(save_directory, "config.pkl"), "wb") as f:
pickle.dump(args, f)
# Path to store the checkpoint file
def checkpoint_path(x):
return os.path.join(save_directory, "4Dgraph.S-{}.P-{}.srnn_model_"\
.format(args.seq_length, args.pred_length)\
+ str(x) + ".tar")
# Initialize net
net = SRNN(args)
if args.use_cuda:
net = net.cuda()
optimizer = torch.optim.Adam(net.parameters(), weight_decay=1e-5)
# learning_rate = args.learning_rate
logging.info("Training begin")
best_val_loss = 100
best_epoch = 0
# Training
for epoch in range(args.num_epochs):
dataloader.reset_batch_pointer(valid=False) # Initialization
loss_epoch = 0
# For each batch
# dataloader.num_batches = 10. 1 epoch have 10 batches
for batch in range(dataloader.num_batches):
start = time.time()
# Get batch data, mini-batch
x, _, _, d = dataloader.next_batch(randomUpdate=True)
# Loss for this batch
loss_batch = 0
# For each sequence in the batch
for sequence in range(
dataloader.batch_size): #미니 배치에 있는 각 sequence 데이터에 대한 처리.
# Construct the graph for the current sequence in {nodes, edges}
stgraph.readGraph([x[sequence]])
nodes, edges, nodesPresent, edgesPresent = stgraph.getSequence(
) #미니 배치에 있는 각 sequence의 graph 정보.
##### Convert to cuda variables #####
nodes = Variable(torch.from_numpy(nodes).float())
# nodes[0] represent all the person(object)'s corrdinate show up in frame 0.
if args.use_cuda:
nodes = nodes.cuda()
edges = Variable(torch.from_numpy(edges).float())
if args.use_cuda:
edges = edges.cuda()
# Define hidden states
numNodes = nodes.size()[1] #numNodes
hidden_states_node_RNNs = Variable(
torch.zeros(numNodes, args.node_rnn_size))
if args.use_cuda:
hidden_states_node_RNNs = hidden_states_node_RNNs.cuda()
hidden_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes, args.edge_rnn_size))
if args.use_cuda:
hidden_states_edge_RNNs = hidden_states_edge_RNNs.cuda()
cell_states_node_RNNs = Variable(
torch.zeros(numNodes, args.node_rnn_size))
if args.use_cuda:
cell_states_node_RNNs = cell_states_node_RNNs.cuda()
cell_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes, args.edge_rnn_size))
if args.use_cuda:
cell_states_edge_RNNs = cell_states_edge_RNNs.cuda()
hidden_states_super_node_RNNs = Variable( #NOTE: 0 for peds., 1 for Bic., 2 for Veh.
torch.zeros(3, args.node_rnn_size))
if args.use_cuda:
hidden_states_super_node_RNNs = hidden_states_super_node_RNNs.cuda(
)
cell_states_super_node_RNNs = Variable(
torch.zeros(3, args.node_rnn_size))
if args.use_cuda:
cell_states_super_node_RNNs = cell_states_super_node_RNNs.cuda(
)
hidden_states_super_node_Edge_RNNs = Variable(
torch.zeros(3, args.edge_rnn_size))
if args.use_cuda:
hidden_states_super_node_Edge_RNNs = (
hidden_states_super_node_Edge_RNNs.cuda())
cell_states_super_node_Edge_RNNs = Variable(
torch.zeros(3, args.edge_rnn_size))
if args.use_cuda:
cell_states_super_node_Edge_RNNs = (
cell_states_super_node_Edge_RNNs.cuda())
# Zero out the gradients // Initialization Step
net.zero_grad()
optimizer.zero_grad()
# Forward prop
outputs, _, _, _, _, _, _, _, _, _ = net(
nodes[:args.seq_length],
edges[:args.seq_length],
nodesPresent[:-1],
edgesPresent[:-1],
hidden_states_node_RNNs,
hidden_states_edge_RNNs,
cell_states_node_RNNs,
cell_states_edge_RNNs,
hidden_states_super_node_RNNs,
hidden_states_super_node_Edge_RNNs,
cell_states_super_node_RNNs,
cell_states_super_node_Edge_RNNs,
)
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:],
nodesPresent[1:], args.pred_length)
loss_batch += loss.item()
# embed()
# Compute gradients
loss.backward()
# Clip gradients
torch.nn.utils.clip_grad_norm(net.parameters(), args.grad_clip)
# Update parameters
optimizer.step()
# Reset the stgraph
stgraph.reset()
end = time.time()
loss_batch = loss_batch / dataloader.batch_size ##### NOTE: Expected Loss; E[L]
loss_epoch += loss_batch
logging.info(
"{}/{} (epoch {}), train_loss = {:.12f}, time/batch = {:.12f}".
format(
epoch * dataloader.num_batches + batch,
args.num_epochs * dataloader.num_batches,
epoch,
loss_batch,
end - start,
))
# Compute loss for the entire epoch
loss_epoch /= dataloader.num_batches
# Log it
log_file_curve.write(str(epoch) + "," + str(loss_epoch) + ",")
##################### Validation Part #####################
dataloader.reset_batch_pointer(valid=True)
loss_epoch = 0
for batch in range(dataloader.valid_num_batches):
# Get batch data
x, _, d = dataloader.next_valid_batch(randomUpdate=False)
# Loss for this batch
loss_batch = 0
for sequence in range(dataloader.batch_size):
stgraph.readGraph([x[sequence]])
nodes, edges, nodesPresent, edgesPresent = stgraph.getSequence(
)
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float())
if args.use_cuda:
nodes = nodes.cuda()
edges = Variable(torch.from_numpy(edges).float())
if args.use_cuda:
edges = edges.cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(
torch.zeros(numNodes, args.node_rnn_size))
if args.use_cuda:
hidden_states_node_RNNs = hidden_states_node_RNNs.cuda()
hidden_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes, args.edge_rnn_size))
if args.use_cuda:
hidden_states_edge_RNNs = hidden_states_edge_RNNs.cuda()
cell_states_node_RNNs = Variable(
torch.zeros(numNodes, args.node_rnn_size))
if args.use_cuda:
cell_states_node_RNNs = cell_states_node_RNNs.cuda()
cell_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes, args.edge_rnn_size))
if args.use_cuda:
cell_states_edge_RNNs = cell_states_edge_RNNs.cuda()
hidden_states_super_node_RNNs = Variable(
torch.zeros(3, args.node_rnn_size))
if args.use_cuda:
hidden_states_super_node_RNNs = hidden_states_super_node_RNNs.cuda(
)
cell_states_super_node_RNNs = Variable(
torch.zeros(3, args.node_rnn_size))
if args.use_cuda:
cell_states_super_node_RNNs = cell_states_super_node_RNNs.cuda(
)
hidden_states_super_node_Edge_RNNs = Variable(
torch.zeros(3, args.edge_rnn_size))
if args.use_cuda:
hidden_states_super_node_Edge_RNNs = (
hidden_states_super_node_Edge_RNNs.cuda())
cell_states_super_node_Edge_RNNs = Variable(
torch.zeros(3, args.edge_rnn_size))
if args.use_cuda:
cell_states_super_node_Edge_RNNs = (
cell_states_super_node_Edge_RNNs.cuda())
outputs, _, _, _, _, _, _, _, _, _ = net(
nodes[:args.seq_length],
edges[:args.seq_length],
nodesPresent[:-1],
edgesPresent[:-1],
hidden_states_node_RNNs,
hidden_states_edge_RNNs,
cell_states_node_RNNs,
cell_states_edge_RNNs,
hidden_states_super_node_RNNs,
hidden_states_super_node_Edge_RNNs,
cell_states_super_node_RNNs,
cell_states_super_node_Edge_RNNs,
)
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:],
nodesPresent[1:], args.pred_length)
loss_batch += loss.item()
# Reset the stgraph
stgraph.reset()
loss_batch = loss_batch / dataloader.batch_size #### NOTE: Expected Loss; E[L]
loss_epoch += loss_batch
loss_epoch = loss_epoch / dataloader.valid_num_batches
# Update best validation loss until now
if loss_epoch < best_val_loss:
best_val_loss = loss_epoch
best_epoch = epoch
# Record best epoch and best validation loss
logging.info("(epoch {}), valid_loss = {:.3f}".format(
epoch, loss_epoch))
logging.info("Best epoch {}, Best validation loss {}".format(
best_epoch, best_val_loss))
# Log it
log_file_curve.write(str(loss_epoch) + "\n")
# Save the model after each epoch
logging.info("Saving model")
torch.save(
{
"epoch": epoch,
"state_dict": net.state_dict(),
"optimizer_state_dict": optimizer.state_dict(),
},
checkpoint_path(epoch),
)
# Record the best epoch and best validation loss overall
logging.info("Best epoch {}, Best validation loss {}".format(
best_epoch, best_val_loss))
# Log it
log_file.write(str(best_epoch) + "," + str(best_val_loss))
# Close logging files
log_file.close()
log_file_curve.close()
def train(args):
# Construct the DataLoader object
dataloader = DataLoader(args.batch_size,
args.seq_length + 1,
forcePreProcess=False)
# Construct the ST-graph object
stgraph = ST_GRAPH(1, args.seq_length + 1)
# Log directory
log_directory = os.getcwd() + "\\log\\"
if not os.path.exists(log_directory):
os.makedirs(log_directory)
# Logging file
log_file_curve = open(os.path.join(log_directory, "log_curve.txt"), "w+")
log_file = open(os.path.join(log_directory, "val.txt"), "w")
# Save directory
save_directory = os.getcwd() + "\\save\\"
if not os.path.exists(save_directory):
os.makedirs(save_directory)
# Open the configuration file
with open(os.path.join(save_directory, "config.pkl"), "wb") as f:
pickle.dump(args, f)
# Path to store the checkpoint file
def checkpoint_path(x):
return os.path.join(save_directory, "srnn_model_" + str(x) + ".tar")
# Initialize net
net = SRNN(args)
net.load_state_dict(torch.load('modelref/srnn_model_271.tar'),
strict=False)
if args.use_cuda:
net = net.cuda()
optimizer = torch.optim.Adam(net.parameters(), weight_decay=1e-5)
# learning_rate = args.learning_rate
logging.info("Training begin")
best_val_loss = 100
best_epoch = 0
global plotter
plotter = VisdomLinePlotter(env_name='main')
# Training
for epoch in range(args.num_epochs):
dataloader.reset_batch_pointer(valid=False)
loss_epoch = 0
# For each batch
# dataloader.num_batches = 10. 1 epoch have 10 batches
for batch in range(dataloader.num_batches):
start = time.time()
# Get batch data
x, _, _, d = dataloader.next_batch(randomUpdate=True)
# Loss for this batch
loss_batch = 0
# For each sequence in the batch
for sequence in range(dataloader.batch_size):
# Construct the graph for the current sequence
stgraph.readGraph([x[sequence]])
nodes, edges, nodesPresent, edgesPresent = stgraph.getSequence(
)
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float())
# nodes[0] represent all the person's corrdinate show up in frame 0.
if args.use_cuda:
nodes = nodes.cuda()
edges = Variable(torch.from_numpy(edges).float())
if args.use_cuda:
edges = edges.cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(
torch.zeros(numNodes, args.node_rnn_size))
if args.use_cuda:
hidden_states_node_RNNs = hidden_states_node_RNNs.cuda()
hidden_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes, args.edge_rnn_size))
if args.use_cuda:
hidden_states_edge_RNNs = hidden_states_edge_RNNs.cuda()
cell_states_node_RNNs = Variable(
torch.zeros(numNodes, args.node_rnn_size))
if args.use_cuda:
cell_states_node_RNNs = cell_states_node_RNNs.cuda()
cell_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes, args.edge_rnn_size))
if args.use_cuda:
cell_states_edge_RNNs = cell_states_edge_RNNs.cuda()
hidden_states_super_node_RNNs = Variable(
torch.zeros(3, args.node_rnn_size))
if args.use_cuda:
hidden_states_super_node_RNNs = hidden_states_super_node_RNNs.cuda(
)
cell_states_super_node_RNNs = Variable(
torch.zeros(3, args.node_rnn_size))
if args.use_cuda:
cell_states_super_node_RNNs = cell_states_super_node_RNNs.cuda(
)
hidden_states_super_node_Edge_RNNs = Variable(
torch.zeros(3, args.edge_rnn_size))
if args.use_cuda:
hidden_states_super_node_Edge_RNNs = (
hidden_states_super_node_Edge_RNNs.cuda())
cell_states_super_node_Edge_RNNs = Variable(
torch.zeros(3, args.edge_rnn_size))
if args.use_cuda:
cell_states_super_node_Edge_RNNs = (
cell_states_super_node_Edge_RNNs.cuda())
# Zero out the gradients
net.zero_grad()
optimizer.zero_grad()
# Forward prop
outputs, _, _, _, _, _, _, _, _, _ = net(
nodes[:args.seq_length],
edges[:args.seq_length],
nodesPresent[:-1],
edgesPresent[:-1],
hidden_states_node_RNNs,
hidden_states_edge_RNNs,
cell_states_node_RNNs,
cell_states_edge_RNNs,
hidden_states_super_node_RNNs,
hidden_states_super_node_Edge_RNNs,
cell_states_super_node_RNNs,
cell_states_super_node_Edge_RNNs,
)
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:],
nodesPresent[1:], args.pred_length)
loss_batch += loss.item()
# embed()
# Compute gradients
loss.backward()
# Clip gradients
torch.nn.utils.clip_grad_norm(net.parameters(), args.grad_clip)
# Update parameters
optimizer.step()
# Reset the stgraph
stgraph.reset()
end = time.time()
loss_batch = loss_batch / dataloader.batch_size
loss_epoch += loss_batch
logging.info(
"{}/{} (epoch {}), train_loss = {:.12f}, time/batch = {:.12f}".
format(
epoch * dataloader.num_batches + batch,
args.num_epochs * dataloader.num_batches,
epoch,
loss_batch,
end - start,
))
# Compute loss for the entire epoch
loss_epoch /= dataloader.num_batches
plotter.plot('loss', 'train', 'Class Loss', epoch, loss_epoch)
# Log it
log_file_curve.write(str(epoch) + "," + str(loss_epoch) + ",")
# Validation
dataloader.reset_batch_pointer(valid=True)
loss_epoch = 0
for batch in range(dataloader.valid_num_batches):
# Get batch data
x, _, d = dataloader.next_valid_batch(randomUpdate=False)
# Loss for this batch
loss_batch = 0
for sequence in range(dataloader.batch_size):
stgraph.readGraph([x[sequence]])
nodes, edges, nodesPresent, edgesPresent = stgraph.getSequence(
)
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float())
if args.use_cuda:
nodes = nodes.cuda()
edges = Variable(torch.from_numpy(edges).float())
if args.use_cuda:
edges = edges.cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(
torch.zeros(numNodes, args.node_rnn_size))
if args.use_cuda:
hidden_states_node_RNNs = hidden_states_node_RNNs.cuda()
hidden_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes, args.edge_rnn_size))
if args.use_cuda:
hidden_states_edge_RNNs = hidden_states_edge_RNNs.cuda()
cell_states_node_RNNs = Variable(
torch.zeros(numNodes, args.node_rnn_size))
if args.use_cuda:
cell_states_node_RNNs = cell_states_node_RNNs.cuda()
cell_states_edge_RNNs = Variable(
torch.zeros(numNodes * numNodes, args.edge_rnn_size))
if args.use_cuda:
cell_states_edge_RNNs = cell_states_edge_RNNs.cuda()
hidden_states_super_node_RNNs = Variable(
torch.zeros(3, args.node_rnn_size))
if args.use_cuda:
hidden_states_super_node_RNNs = hidden_states_super_node_RNNs.cuda(
)
cell_states_super_node_RNNs = Variable(
torch.zeros(3, args.node_rnn_size))
if args.use_cuda:
cell_states_super_node_RNNs = cell_states_super_node_RNNs.cuda(
)
hidden_states_super_node_Edge_RNNs = Variable(
torch.zeros(3, args.edge_rnn_size))
if args.use_cuda:
hidden_states_super_node_Edge_RNNs = (
hidden_states_super_node_Edge_RNNs.cuda())
cell_states_super_node_Edge_RNNs = Variable(
torch.zeros(3, args.edge_rnn_size))
if args.use_cuda:
cell_states_super_node_Edge_RNNs = (
cell_states_super_node_Edge_RNNs.cuda())
outputs, _, _, _, _, _, _, _, _, _ = net(
nodes[:args.seq_length],
edges[:args.seq_length],
nodesPresent[:-1],
edgesPresent[:-1],
hidden_states_node_RNNs,
hidden_states_edge_RNNs,
cell_states_node_RNNs,
cell_states_edge_RNNs,
hidden_states_super_node_RNNs,
hidden_states_super_node_Edge_RNNs,
cell_states_super_node_RNNs,
cell_states_super_node_Edge_RNNs,
)
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:],
nodesPresent[1:], args.pred_length)
loss_batch += loss.item()
# Reset the stgraph
stgraph.reset()
loss_batch = loss_batch / dataloader.batch_size
loss_epoch += loss_batch
loss_epoch = loss_epoch / dataloader.valid_num_batches
# Update best validation loss until now
if loss_epoch < best_val_loss:
best_val_loss = loss_epoch
best_epoch = epoch
plotter.plot('loss', 'val', 'Class Loss', epoch, loss_epoch)
# Record best epoch and best validation loss
logging.info("(epoch {}), valid_loss = {:.3f}".format(
epoch, loss_epoch))
logging.info("Best epoch {}, Best validation loss {}".format(
best_epoch, best_val_loss))
# Log it
log_file_curve.write(str(loss_epoch) + "\n")
# Save the model after each epoch
logging.info("Saving model")
torch.save(
{
"epoch": epoch,
"state_dict": net.state_dict(),
"optimizer_state_dict": optimizer.state_dict(),
},
checkpoint_path(epoch),
)
# Record the best epoch and best validation loss overall
logging.info("Best epoch {}, Best validation loss {}".format(
best_epoch, best_val_loss))
# Log it
log_file.write(str(best_epoch) + "," + str(best_val_loss))
# Close logging files
log_file.close()
log_file_curve.close()
def train(args):
# Construct the DataLoader object
## args: (batch_size=50, seq_length=5, datasets=[0, 1, 2, 3, 4, 5, 6], forcePreProcess=False, infer=False)
dataloader = DataLoader(args.batch_size, args.seq_length + 1, args.train_dataset, forcePreProcess=True) ##** not sure why seq_length+1
# Construct the ST-graph object
## args: (batch_size=50, seq_length=5)
stgraph = ST_GRAPH(1, args.seq_length + 1) ##**not sure why batch_size=1 and seq_length+1
# Log directory
log_directory = 'log/trainedOn_'+ str(args.train_dataset)
if not os.path.exists(log_directory):
os.makedirs(log_directory)
# Logging file
log_file_curve = open(os.path.join(log_directory, 'log_curve.txt'), 'w')
log_file = open(os.path.join(log_directory, 'val.txt'), 'w')
# Save directory for saving the model
save_directory = 'save/trainedOn_'+str(args.train_dataset)
if not os.path.exists(save_directory):
os.makedirs(save_directory)
# Open the configuration file
## store arguments from parser
with open(os.path.join(save_directory, 'config.pkl'), 'wb') as f:
pickle.dump(args, f)
# Path to store the checkpoint file, i.e. model after the particular epoch
def checkpoint_path(x):
return os.path.join(save_directory, 'srnn_model_'+str(x)+'.tar')
# Initialize net
net = SRNN(args)
if args.use_cuda:
net = net.cuda()
# optimizer = torch.optim.Adam(net.parameters(), lr=args.learning_rate)
# optimizer = torch.optim.RMSprop(net.parameters(), lr=args.learning_rate, momentum=0.0001, centered=True)
optimizer = torch.optim.Adagrad(net.parameters())
learning_rate = args.learning_rate
print('Training begin')
best_val_loss = 100
best_epoch = 0
# Training
for epoch in range(args.num_epochs):
dataloader.reset_batch_pointer(valid=False)
loss_epoch = 0
# For each batch
for batch in range(dataloader.num_batches):
start = time.time()
# Get batch data
## Format:
## x_batch: input sequence of length self.seq_length
## y_batch: output seq of same length shifted y 1 step in time
## frame_batch: frame IDs in the batch
## d: current position of dataset pointer (points to the next batch to be loaded)
x, _, _, d = dataloader.next_batch(randomUpdate=True)
# Loss for this batch
loss_batch = 0
# For each sequence in the batch
for sequence in range(dataloader.batch_size):
# Construct the graph for the current sequence
stgraph.readGraph([x[sequence]])
nodes, edges, nodesPresent, edgesPresent = stgraph.getSequence()
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float())
if args.use_cuda:
nodes = nodes.cuda()
edges = Variable(torch.from_numpy(edges).float())
if args.use_cuda:
edges = edges.cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(torch.zeros(numNodes, args.human_node_rnn_size))
if args.use_cuda:
hidden_states_node_RNNs = hidden_states_node_RNNs.cuda()
hidden_states_edge_RNNs = Variable(torch.zeros(numNodes*numNodes, args.human_human_edge_rnn_size))
if args.use_cuda:
hidden_states_edge_RNNs = hidden_states_edge_RNNs.cuda()
cell_states_node_RNNs = Variable(torch.zeros(numNodes, args.human_node_rnn_size))
if args.use_cuda:
cell_states_node_RNNs = cell_states_node_RNNs.cuda()
cell_states_edge_RNNs = Variable(torch.zeros(numNodes*numNodes, args.human_human_edge_rnn_size))
if args.use_cuda:
cell_states_edge_RNNs = cell_states_edge_RNNs.cuda()
# Zero out the gradients
net.zero_grad()
optimizer.zero_grad()
# Forward prop
outputs, _, _, _, _, _, _ = net(nodes[:args.seq_length], edges[:args.seq_length], nodesPresent[:-1], edgesPresent[:-1], hidden_states_node_RNNs, hidden_states_edge_RNNs, cell_states_node_RNNs, cell_states_edge_RNNs)
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:], nodesPresent[1:], args.pred_length)
loss_batch += loss.data[0]
# Compute gradients
loss.backward()
# Clip gradients
torch.nn.utils.clip_grad_norm(net.parameters(), args.grad_clip)
# Update parameters
optimizer.step()
# Reset the stgraph
stgraph.reset()
end = time.time()
loss_batch = loss_batch / dataloader.batch_size
loss_epoch += loss_batch
print(
'{}/{} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}'.format(epoch * dataloader.num_batches + batch,
args.num_epochs * dataloader.num_batches,
epoch,
loss_batch, end - start))
# Compute loss for the entire epoch
loss_epoch /= dataloader.num_batches
# Log it
log_file_curve.write(str(epoch)+','+str(loss_epoch)+',')
# Validation
dataloader.reset_batch_pointer(valid=True)
loss_epoch = 0
for batch in range(dataloader.valid_num_batches):
# Get batch data
x, _, d = dataloader.next_valid_batch(randomUpdate=False)
# Loss for this batch
loss_batch = 0
for sequence in range(dataloader.batch_size):
stgraph.readGraph([x[sequence]])
nodes, edges, nodesPresent, edgesPresent = stgraph.getSequence()
# Convert to cuda variables
nodes = Variable(torch.from_numpy(nodes).float())
if args.use_cuda:
nodes = nodes.cuda()
edges = Variable(torch.from_numpy(edges).float())
if args.use_cuda:
edges = edges.cuda()
# Define hidden states
numNodes = nodes.size()[1]
hidden_states_node_RNNs = Variable(torch.zeros(numNodes, args.human_node_rnn_size))
if args.use_cuda:
hidden_states_node_RNNs = hidden_states_node_RNNs.cuda()
hidden_states_edge_RNNs = Variable(torch.zeros(numNodes*numNodes, args.human_human_edge_rnn_size))
if args.use_cuda:
hidden_states_edge_RNNs = hidden_states_edge_RNNs.cuda()
cell_states_node_RNNs = Variable(torch.zeros(numNodes, args.human_node_rnn_size))
if args.use_cuda:
cell_states_node_RNNs = cell_states_node_RNNs.cuda()
cell_states_edge_RNNs = Variable(torch.zeros(numNodes*numNodes, args.human_human_edge_rnn_size))
if args.use_cuda:
cell_states_edge_RNNs = cell_states_edge_RNNs.cuda()
outputs, _, _, _, _, _, _ = net(nodes[:args.seq_length], edges[:args.seq_length], nodesPresent[:-1], edgesPresent[:-1],
hidden_states_node_RNNs, hidden_states_edge_RNNs,
cell_states_node_RNNs, cell_states_edge_RNNs)
# Compute loss
loss = Gaussian2DLikelihood(outputs, nodes[1:], nodesPresent[1:], args.pred_length)
loss_batch += loss.data.item()
# Reset the stgraph
stgraph.reset()
loss_batch = loss_batch / dataloader.batch_size
loss_epoch += loss_batch
loss_epoch = loss_epoch / dataloader.valid_num_batches
#Saving the model\
if loss_epoch < best_val_loss or args.save_every:
print('Saving model')
torch.save({
'epoch': epoch,
'state_dict': net.state_dict(),
'optimizer_state_dict': optimizer.state_dict()
}, checkpoint_path(epoch))
#save_best_model overwriting the earlier file
#if loss_epoch < best_val_loss:
# Update best validation loss until now
if loss_epoch < best_val_loss:
best_val_loss = loss_epoch
best_epoch = epoch
# Record best epoch and best validation loss
print('(epoch {}), valid_loss = {:.3f}'.format(epoch, loss_epoch))
print('Best epoch {}, Best validation loss {}'.format(best_epoch, best_val_loss))
# Log it
log_file_curve.write(str(loss_epoch)+'\n')
# Record the best epoch and best validation loss overall
print('Best epoch {}, Best validation loss {}'.format(best_epoch, best_val_loss))
# Log it
log_file.write(str(best_epoch)+','+str(best_val_loss))
# Close logging files
log_file.close()
log_file_curve.close()