def optimzer_model():
# get memeory
transitions = memory.memory
batch = Transition(*zip(*transitions))
state_batch = torch.cat(batch.state)
# print(state_batch.shape)
action_batch = torch.cat(batch.action)
# print(len(batch.reward))
temp = []
for i in range(len(batch.reward)):
temp.append(batch.reward[i].type(torch.FloatTensor))
reward_batch = torch.cat(tuple(temp))
g_list = reward_batch.data.tolist()
for i in reversed(range(1, len(g_list))):
g_list[i-1] = g_list[i-1] + 0.999 * g_list[i]
g_tensor = torch.FloatTensor(g_list).view(-1,1)
# print(g_tensor.shape)
state_action_values = nn(state_batch)[0].gather(1, action_batch)
b_tensor = nn(state_batch)[1].detach().view(-1,1)
l1 = (g_tensor - b_tensor) * torch.log(state_action_values)
# print(l1.shape)
l1 = torch.sum(l1)
l2 = F.smooth_l1_loss(g_tensor, b_tensor)
# print(l2)
loss = l1 + l2
# print(loss)
optimizer.zero_grad()
loss.backward()
# for param in nn.parameters():
# param.grad.data.clamp_(-1, 1)
optimizer.step()
def gpu_thread_worker(nn, edge_queue, eval_batch_size, is_cuda):
while True:
with torch.no_grad():
nn.eval()
edges = []
last_batch = False
for i in range(eval_batch_size):
if edge_queue.empty():
break
try:
edge = edge_queue.get_nowait()
if edge is None:
last_batch = True
print(
"Sentinel received. GPU will process this batch and terminate afterwards"
)
else:
edges.append(edge)
except queue.Empty:
pass
if len(edges) != 0:
# print("batch size:", len(edges))
# batch process
states = [edge.to_node.checker_state for edge in edges]
input_tensor = states_to_batch_tensor(states, is_cuda)
# this line is the bottleneck
if isinstance(nn, YesPolicy) or isinstance(nn, SharedPolicy):
value_tensor, logits_tensor = nn(input_tensor)
else:
value_tensor = nn(input_tensor)
if isinstance(nn, YesPolicy) or isinstance(nn, SharedPolicy):
logits_tensor = value_tensor
for edx, edge in enumerate(edges):
edge.value = value_tensor[edx, 0]
edge.logit = logits_tensor[edx, 0]
edge_queue.task_done()
edge.from_node.unassigned -= 1
if edge.from_node.unassigned == 0:
edge.from_node.lock.release()
else:
time.sleep(0.1)
if last_batch:
edge_queue.task_done()
print(
"Queue task done signal sent. Queue will join. Thread may still be running."
)
return
def have_usable_cuda(self):
haveit = torch.cuda.is_available()
if haveit:
# pytorch says it is available on legacy devices where it is not supported any more so make sure
try:
t1 = torch.randn(3).cuda()
nn = torch.nn.Linear(3, 3).cuda()
nn(t1)
except:
logger.info(
"Switchin off CUDA: pytorch reports it is available but it does not seem to be supported"
)
haveit = False
return haveit
def post_milp(self, x, nn, output_flag, t, template):
"""milp method"""
post = []
gurobi_model = self.internal_model # grb.Model()
input = self.last_input # Experiment.generate_input_region(gurobi_model, template, x, self.env_input_size)
observation = gurobi_model.addMVar(shape=(2,), lb=float("-inf"), ub=float("inf"), name="observation")
gurobi_model.addConstr(observation[1] <= input[0] - input[1] + self.input_epsilon / 2, name=f"obs_constr21")
gurobi_model.addConstr(observation[1] >= input[0] - input[1] - self.input_epsilon / 2, name=f"obs_constr22")
gurobi_model.addConstr(observation[0] <= v_lead - input[2] + self.input_epsilon / 2, name=f"obs_constr11")
gurobi_model.addConstr(observation[0] >= v_lead - input[2] - self.input_epsilon / 2, name=f"obs_constr12")
nn_output, max_val, min_val = Experiment.generate_nn_guard_continuous(gurobi_model, observation, nn)
is_equal = torch.isclose(nn(torch.from_numpy(observation.X).float()), torch.from_numpy(nn_output.X).float(), rtol=1e-3).all().item()
assert is_equal
# clipped_nn_output = gurobi_model.addMVar(lb=float("-inf"), shape=(len(nn_output)), name=f"clipped_nn_output")
# gurobi_model.addConstr(nn_output[0] >= -12, name=f"clipped_out_constr1")
# gurobi_model.addConstr(nn_output[0] <= 12, name=f"clipped_out_constr2")
# feasible_action = Experiment.generate_nn_guard(gurobi_model, input, nn, action_ego=chosen_action)
# apply dynamic
x_prime = StoppingCarContinuousExperiment.apply_dynamic(input, gurobi_model, action=nn_output, env_input_size=self.env_input_size)
gurobi_model.update()
gurobi_model.optimize()
found_successor, x_prime_results = self.h_repr_to_plot(gurobi_model, template, x_prime)
self.last_input = x_prime
# x_prime_results = x_prime_results.round(4) # correct for rounding errors introduced by the conversion to h-repr
if found_successor:
post.append(tuple(x_prime_results))
return post
def nll():
# input is of size N x C = 3 x 5
input = torch.randn(3, 5, requires_grad=True)
# each element in target has to have 0 <= value < C
target = torch.tensor([1, 0, 4])
output = torch.nn(torch.nn.LogSoftmax(input), target)
output.backward()
def __init__(self, hparams):
super().__init__()
self.hparams = hparams
self.loss = torch.nn.BCEWithLogitsLoss()
self.experiment_name = self.hparams.experiment_name
# check if using single or multiple modalities
if self.hparams.data_type == 'JointAll':
self.hparams.data_type = list(PARSED_EMR_DICT.keys()) + ['Vision']
if self.hparams.data_type == 'JointSeparate':
self.hparams.data_type = ['All', 'Vision']
# get feature size
tmp_dataloader = self.train_dataloader()
feature_size = tmp_dataloader.dataset.feature_size
# use fcnn if only one modality provided, else use joint model
nn = FCNN if type(self.hparams.data_type) == str else JointModel
self.model = nn(
feature_size=feature_size,
num_neurons=self.hparams.num_neurons,
num_hidden=self.hparams.num_hidden,
init_method=self.hparams.init_method,
activation=self.hparams.activation,
dropout_prob=self.hparams.dropout_prob,
)
# for computing metrics
self.train_probs = []
self.val_probs = []
self.test_probs = []
self.train_true = []
self.val_true = []
self.test_true = []
self.test_acc = []
def evaluate(self):
'''
Evaluate the model
'''
for model in self.mrf.nnformulas:
model.eval()
pred = []
with torch.no_grad():
for fidx, nn in enumerate(self.mrf.nnformulas):
pred.append(nn(self.val_inputs[fidx]))
y_link = pred[1]
y_link_pred = y_link.argmax(dim=1)
f1_link = f1_score(self.link_val_true,
y_link_pred,
average='macro',
labels=[1])
y_type = pred[0]
y_type_pred = y_type.argmax(dim=1)
f1_type = f1_score(self.type_val_true,
y_type_pred,
average='macro')
return f1_link, f1_type
def nn_opt(self, nn):
with torch.no_grad():
def obj_cons(x):
tx = torch.tensor(x)
out = nn(tx)
return out[:self.nobj].numpy().tolist(), out[self.nobj:].numpy(
).tolist()
def obj_ucons(x):
tx = torch.tensor(x)
return nn(tx).numpy().tolist()
arch = Archive()
if self.ncons == 0:
prob = Problem(self.dim, self.nobj)
prob.function = obj_ucons
else:
prob = Problem(self.dim, self.nobj, self.ncons)
prob.function = obj_cons
prob.constraints[:] = "<=0"
prob.types[:] = [Real(self.lb, self.ub) for i in range(self.dim)]
self.algo = NSGAII(prob, population=50, archive=arch)
self.algo.run(5000)
optimized = self.algo.result
rand_idx = np.random.randint(len(optimized))
suggested_x = torch.tensor(optimized[rand_idx].variables)
suggested_y = nn(suggested_x)
return suggested_x.view(-1, self.dim), suggested_y.view(
-1, self.nobj + self.ncons)
def train_post_prototype(assignment):
from config import get_prototype_config
from model_torch import Post_Prototype_RCNN_L2
from stream import Post_Data
config = get_prototype_config()
## 1. data prepare
trainData = Post_Data(is_train=True, **config)
testData = Post_Data(is_train=False, **config)
### 2. model & train
nn = Post_Prototype_RCNN_L2(assignment, **config)
LR = config['LR']
opt_ = torch.optim.SGD(nn.parameters(), lr=LR)
best_auc = 0
trainFeature_all, _ = trainData.get_all()
testFeature, testLabel = testData.get_all()
for i in range(config['train_iter']):
nn.generate_prototype(trainFeature_all)
feat, label = trainData.next()
loss, _ = nn(feat, label)
opt_.zero_grad()
loss.backward()
opt_.step()
loss_value = loss.data[0]
if i % 1 == 0:
score = post_evaluate(testFeature, testLabel, nn, **config)
best_auc = score if score > best_auc else best_auc
print('iter {}, auc:{} (best:{})'.format(i,
str(score)[:5],
str(best_auc)[:5]),
end=' ')
if i > 0:
print('{} sec'.format(str(time() - t1)[:4]))
t1 = time()
def select_action(state):
m = torch.distributions.Categorical(torch.tensor([0.25, 0.75]))
m_type = m.sample().data.tolist()
if m_type == 0:
return torch.tensor([[random.randrange(n_actions)]], device=device, dtype=torch.long)
else:
with torch.no_grad():
return nn(state)[0].max(1)[1].view(1, 1)
def forward(self, x):
# x is batch by time by dim
x = x.permute(1, 0, 2)
# x is time by batch by dim
for nn in self.nns:
x = nn(x)[0]
# swap channel + time back
z_out = x.permute(1, 0, 2)
return z_out
def forward(self):
'''
Computes the forward step of the nural networks
'''
self.wt = []
for fidx, nn in enumerate(self.mrf.nnformulas):
self.wt.append(nn(self.nn_inputs[fidx]))
return self.wt
def sample(self, nn, inp, n_samples=3):
previous = np.zeros()
for i in n_samples:
previous += n_i
inhibit = norm(previous / i)
#inhibit previous samples ]
z0 = random.random()
nn[j] += inp + z0
nn[j] -= inhibit[j]
out, p = nn(inp, z0)
def fit(self, epochs=100):
for k in tqdm(range(epochs)):
# query by query
scores = []
true_scores = []
for datum in data_train:
scores.append(nn(datum.feature))
true_scores.append(datum.relevance)
op = self.compute_ordered_pairs(scores)
lambdas = self.compute_lambda(true_scores, scores, op)
def __init__(self,
input_dim,
adapter_dim,
init_scale=1e-3,
shared_weights=True):
super().__init__()
self.adapter_dim = adapter_dim
if shared_weights:
self.pooler_layer = TimeDistributed(
torch.nn(input_dim, adapter_dim))
else:
raise NotImplementedError
def inference_imputation_networks(nn, nf, data, args):
lst = []
batch_sz = 256
iterations = int(data.shape[0] / batch_sz)
left_over = data.shape[0] - batch_sz * iterations
with torch.no_grad():
for idx in range(iterations):
rows = data[int(idx * batch_sz):int((idx + 1) * batch_sz)]
if args.use_cuda:
rows = torch.from_numpy(rows).float().cuda()
else:
rows = torch.from_numpy(rows).float()
z = nf(rows)[0]
z_hat = nn(z)
x_hat = nf.inverse(z_hat)
lst.append(np.clip(x_hat.cpu().numpy(), 0, 1))
rows = data[int((idx + 1) * batch_sz):]
if args.use_cuda:
rows = torch.from_numpy(rows).float().cuda()
else:
rows = torch.from_numpy(rows).float()
z = nf(rows)[0]
z_hat = nn(z)
x_hat = nf.inverse(z_hat)
lst.append(np.clip(x_hat.cpu().numpy(), 0, 1))
final_lst = []
for idx in range(len(lst)):
for element in lst[idx]:
final_lst.append(element)
return final_lst
def eval_on_test(nn, crossEntropy, x_test, y_test, test_accuracies,
test_losses):
"""
Find the accuracy and loss on the test set, given the current weights
"""
test_pred = nn(x_test)
true_labels = torch.max(y_test, 1)[1]
test_acc = accuracy(test_pred, y_test)
test_loss = crossEntropy(test_pred, true_labels)
print("Test accuracy is:", test_acc, "\n")
test_accuracies.append(test_acc)
test_losses.append(test_loss)
return test_accuracies, test_losses
def inference_img_imputation_networks(nn, nf, data, mask, original_dat, args):
batch_sz = 256
iterations = int(len(data) / batch_sz)
left_over = len(data) - batch_sz * iterations
ones = np.ones((256, data[0].shape[0]))
with torch.no_grad():
for idx in range(iterations):
begin = int(idx * batch_sz)
end = int((idx + 1) * batch_sz)
rows = np.asarray(data[begin:end])
if args.use_cuda:
rows = torch.from_numpy(rows).float().cuda()
else:
rows = torch.from_numpy(rows).float()
z = nf(rows)[0]
z_hat = nn(z)
x_hat = nf.inverse(z_hat)
x_hat = np.clip(x_hat.cpu().numpy(), 0, 1)
data[begin:end] = (ones - mask[begin:end]) * original_dat[
begin:end] + mask[begin:end] * x_hat
rows = np.asarray(data[-left_over:])
if args.use_cuda:
rows = torch.from_numpy(rows).float().cuda()
else:
rows = torch.from_numpy(rows).float()
ones = np.ones((left_over, data[0].shape[0]))
z = nf(rows)[0]
z_hat = nn(z)
x_hat = nf.inverse(z_hat)
x_hat = np.clip(x_hat.cpu().numpy(), 0, 1)
data[-left_over:] = (ones - mask[-left_over:]) * original_dat[
-left_over:] + mask[-left_over:] * x_hat
def post_evaluate(testFeature, testLabel, nn, **config):
batch_size = config['batch_size']
batch_number = int(np.ceil(testFeature.shape[0] / batch_size))
Label = []
Output = []
for i in range(batch_number):
feat, label = testFeature[i * batch_size:(i + 1) *
batch_size], testLabel[i *
batch_size:(i + 1) *
batch_size]
_, output = nn(feat, label)
label = list(label.data)
Label.extend(label)
Output.extend([float(output[j][1]) for j in range(output.shape[0])])
return roc_auc_score(Label, Output)
def main(loadfrom, saveto, dev_data):
loadfrom = loadfrom.strip().split(',')
net = []
for ll in loadfrom:
with open(ll, 'rb') as f:
net.append(pkl.load(f))
test = data_iterator(dev_data, net[0].options)
print 'Testing...',
preds = []
n_samples = 0
softmax = torch.nn.Softmax()
for s1, s1m, labels in test:
for nn in net:
nn.train()
s1_ = torch.from_numpy(numpy.array(s1))
s1m_ = torch.from_numpy(numpy.array(s1m).astype('float32'))
for ii, nn in enumerate(net):
out = nn(Variable(s1_, requires_grad=False),
Variable(s1m_, requires_grad=False))
out = softmax(out)
out = out.data.numpy()
if ii == 0:
pp = out
else:
pp += out
pp = pp / len(net)
preds.append(pp.argmax(-1))
n_samples += len(labels)
preds = numpy.concatenate(preds, axis=0)
preds = (2. * preds) - 1.
pos = numpy.sum(preds == 1.)
neg = numpy.sum(preds == -1.)
print 'pos {} neg {}'.format(pos, neg)
with open(saveto, 'w') as f_out:
with open(dev_data, 'r') as f_in:
print >> f_out, f_in.readline().strip()
for ii, l in enumerate(f_in):
print >> f_out, '{}\t{}'.format(l.strip(), int(preds[ii]))
def train_weighted_post_prototype(assignment):
from config import get_prototype_config
from model_torch import Weighted_Post_Prototype_RCNN_L2
from stream import Weighted_Post_Data
config = get_prototype_config()
every_iter = config['every_iter']
## 1. data prepare
trainData = Weighted_Post_Data(is_train=True, **config)
testData = Weighted_Post_Data(is_train=False, **config)
### 2. model & train
nn = Weighted_Post_Prototype_RCNN_L2(assignment, **config)
LR = config['LR']
opt_ = torch.optim.SGD(nn.parameters(), lr=LR)
best_auc = 0
trainFeature_all, _, weight_all = trainData.get_all()
testFeature, testLabel, _ = testData.get_all()
for i in range(config['train_iter']):
nn.generate_prototype(trainFeature_all, weight_all)
feat, label, weight = trainData.next()
loss, _ = nn(feat, label, weight)
opt_.zero_grad()
loss.backward()
opt_.step()
#loss_value = loss.data[0]
if i % 1 == 0:
score = post_evaluate(testFeature, testLabel, nn, **config)
best_auc = score if score > best_auc else best_auc
if i % every_iter == every_iter - 1 and i > 0:
print('iter {}, auc:{} (best:{})'.format(
i,
str(score)[:5],
str(best_auc)[:5]),
end=' \n')
# print('{} sec'.format(str(time() - t1)[:4]))
#t1 = time()
trainData.restart()
reweight = []
for i in range(trainData.batch_number):
feat, label, weight = trainData.next()
reweight.extend(nn.measure_similarity(feat))
#print(reweight)
reweight = normalize_weight(reweight, config['upper'], config['lower'])
#print(reweight)
return reweight
def evaluate(self):
'''
Evaluate the model
'''
for model in self.mrf.nnformulas:
model.eval()
pred = []
with torch.no_grad():
for fidx, nn in enumerate(self.mrf.nnformulas):
pred.append(nn(self.val_inputs[fidx]))
y = pred[0]
y_pred = y.argmax(dim=1)
y_pred = y_pred.to('cpu')
acc = accuracy_score(self.val_true, y_pred)
return acc
def greedy_decode(h0, nn, word2idx, idx2word, max_len, batch, out):
sos = word2idx['<sos>']
in_sos = torch.ones(1, 1).fill_(sos).long().cuda()
in_state = in_sos
for i in range(max_len - 1):
in_st = torch.cat(
[in_state, torch.ones(1, 1).fill_(sos).long().cuda()], dim=-1)
prob = nn(h0, in_st, out['embedded_in_txt'], batch.in_txt,
batch.in_txt_mask)
_, next_word = torch.max(prob, dim=-1)
in_state = torch.cat([in_sos, next_word], dim=-1)
if next_word[0][-1] == word2idx['<eos>']: break
out = []
for state in in_state[0]:
if state.item() == word2idx['<unk>'] or state.item(
) == word2idx['<pad>']:
continue
if state.item() not in idx2word: pdb.set_trace()
out.append(idx2word[state.item()])
return out
def value_train_loop(hypers, nn, criterion=torch.nn.MSELoss(reduction='sum')):
for epoch in range(hypers['epochs']):
nn.train()
train_losses, test_losses = [], []
for batch in range(hypers['batch_train']):
graphs, labels = value_generate_batch(hypers['H'], hypers['n'])
loss = value_eval_batch(nn, graphs, labels, criterion)
loss.backward()
train_losses.append(loss.item())
nn.optim.step(), nn.zero_grad()
nn.eval()
for batch in range(hypers['batch_test']):
graphs, labels = value_generate_batch(hypers['H'], hypers['n'])
loss = value_eval_batch(nn, graphs, labels, criterion)
test_losses.append(loss.item())
print(
f"Train loss is {sum(train_losses) / len(train_losses):.4E}.\nTest loss is {sum(test_losses)/len(test_losses):.4E}.\n"
)
graph, energy = value_generate_batch(hypers['H'], hypers['n'], 1)
print(graph, energy, nn(graph))
def evaluate_neuralnet(nn, env):
'''
Evaluate an agent running it in the environment and computing the total reward
'''
obs = env.reset()
game_reward = 0
while True:
# Output of the neural net
net_output = nn(torch.tensor(obs))
# the action is the value clipped returned by the nn
action = np.clip(net_output.data.cpu().numpy().squeeze(), -1, 1)
new_obs, reward, done, _ = env.step(action)
obs = new_obs
game_reward += reward
if done:
break
return game_reward
def errors(nn):
for X, y in test_loader:
predictions = nn(X)
predictions = predictions.detach().numpy()
predictions = np.exp(predictions)
predictions = predictions / np.sum(predictions, axis=-1).reshape(-1, 1)
prob = predictions[np.arange(y.shape[0]), y]
ind = np.argsort(prob)[:25]
plt.figure(figsize=(6, 7))
for i in range(25):
plt.subplot(5, 5, i+1)
Xn = X[ind[i]]
Xn = Xn.transpose(0, 1).transpose(1, 2).numpy()
Xn = Xn.astype('float64')
Xn = (Xn - np.min(Xn, axis=0)) / (np.max(Xn, axis=0) - np.min(Xn, axis=0))
Xn = np.rint(Xn * 255).astype('uint8')
plt.imshow(Xn.reshape(332, 332, 3))
plt.title("%d(%d) - %.2f" % (np.argmax(predictions[ind[i], :]), y[ind[i]], prob[ind[i]]))
plt.axis('off')
plt.savefig("Errors_pion_8_new.png", dpi = 250)
break
def evaluate_neuralnet(nn, env, wrap):
# Evaluate an agent running it in the environment and computing the total reward
obs = dm_wrap(env.reset(), wrap=wrap)
game_reward = 0
reward = 0
done = False
while True:
# Output of the neural net
obs = torch.FloatTensor(obs)
action = nn(obs)
action = np.clip(action.data.cpu().numpy().squeeze(), -1, 1)
# action = action.data.numpy().argmax()
# action = np.asarray([action])
new_obs, reward, done, _ = env.step(action)
obs = dm_wrap(new_obs, wrap=wrap)
game_reward += reward
if done:
break
return game_reward
self.pool = nn.MaxPool1d(3,stride=2)
self.conv3 = nn.Conv1d(96,128, kernel_size=3, stride=1, padding=0)
self.conv4 = nn.Conv1d(128, 256, kernel_size=3, stride=1, padding=0)
self.fc = nn.Linear(15104, 48)
self.do = nn.Dropout()
self.out = nn.Linear(48, classes)
def forward(self, x):
x = F.relu(self.conv1(x))
x = self.pool(F.relu(self.conv2(x)))
x = F.relu(self.conv3(x))
x = F.relu(self.conv4(x))
x = x.view(x.size(0),-1)
x = F.relu(self.fc(self.do(x)))
x = self.out(x)
return x
if __name__=='__main__':
#Test code
nn = net(20)
x = torch.randn(32,2,64)
y = nn(x)
print(y)
assert size > 0
self.weight_batch = size
if size > 1:
self.weight = Parameter(torch.Tensor(size, self.out_features, self.in_features))
if self.bias is not None:
self.bias = Parameter(torch.Tensor(size, self.out_features))
else:
self.weight = Parameter(torch.Tensor(self.out_features, self.in_features))
if self.bias is not None:
self.bias = Parameter(torch.Tensor(self.out_features))
self.double()
if __name__== "__main__":
nn = Net(10,2)
w = torch.autograd.Variable(torch.randn((10, nn.n_weights)), requires_grad=True)
samples = np.random.rand(5,10)
t = torch.rand(5,2).double()
nn.set_weights(w.data.numpy())
loss = ((nn(samples)-t) ** 2).mean()
w1 = w[0]
nn.set_weights(w1.data.numpy())
loss = ((nn(samples) - t) ** 2).mean()
loss.backward()
g = nn.grad()
g = 1
out = z.mean()
print(z, out)
a = torch.randn(2, 2)
a = ((a*3) / (a-1))
print(a.requires_grad)
a.requires_grad_(True)
print(a.requires_grad)
b = (a*a).sum()
print(b.grad_fn)
out.backward()
print(x.grad)
x = torch.randn(3, requires_grad = True)
y = x*2
while y.data.norm() < 1000:
y = y*2
print(y)
v = torch.tensor([0.1, 1.0, 0.0001], dtype = torch.float)
y.backward(v)
print(x.grad)
print(x.requires_grad)
print((x**2).requires_grad)
with torch.no_grad():
print((x**2).requires_grad)
if __name__ == "__main__":
nn()
mnn()
testTorch()
prediction_vector = self.fc2(intermediate_vector)
if apply_softmax:
prediction_vector = F.softmax(prediction_vector, dim=1)
return prediction_vector
if __name__ == '__main__':
# args = Namespace(
# cbow_csv='frankenstein_with_splits.csv',
# vectorizer_file="vectorizer.json",
# )
#
# dataset = CBOWDataset.load_dataset_and_make_vectorizer(args.cbow_csv)
# dataset.save_vectorizer(args.vectorizer_file)
#
# for x in generate_batches(dataset, batch_size=32):
# print(x)
# break
nn = NewsClassifier(5, 10, 10, 50, 10, 0.1, pretrained_embeddings=None)
x = 1 + torch.randn(2, 5).long()
print(x.size())
y = nn(x)
print(y.size())
