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combined_outputs = process_encoder_outputs(output, bert_mask)
processed_examples.extend(combined_outputs)
#package preprocessed data together + return
data = list(zip(processed_examples, output_masks, instances, label_indexes))
return data
def _train(train_data, probe, optim, criterion, bsz=1, silent=False):
if not silent: train_data = tqdm(train_data)
for input_ids, output_mask, _, label in train_data:
input_ids = input_ids.cuda()
output_mask = output_mask.cuda()
label = label.cuda()
optim.zero_grad()
output = probe(input_ids)
#mask to candidate senses for target word
output = torch.mul(output, output_mask)
#set masked out items to -inf to get proper probabilities over the candidate senses
output[output == 0] = float('-inf')
output = F.softmax(output, dim=-1)
loss = criterion(output, label)
batch_sz = loss.size(0)
loss = loss.sum()/batch_sz
loss.backward()
optim.step()
return probe, optim
def _eval(eval_data, probe, label_space):
eval_preds = []
for input_ids, output_mask, inst, _ in eval_data:
input_ids = input_ids.cuda()
output_mask = output_mask.cuda()
#run example through model
with torch.no_grad():
output = probe(input_ids)
#mask to candidate senses for target word
output = torch.mul(output, output_mask)
#set masked out items to -inf to get proper probabilities over the candidate senses
output[output == 0] = float('-inf')
output = F.softmax(output, dim=-1)
#get predicted label
pred_id = output.topk(1, dim=-1)[1].squeeze().item()
pred_label = label_space[pred_id]
eval_preds.append((inst[0], pred_label))
return eval_preds
def _eval_with_backoff(eval_data, probe, label_space, wn_senses, coverage, keys):
eval_preds = []
for key, (input_ids, output_mask, inst, _) in zip(keys, eval_data):
input_ids = input_ids.cuda()
output_mask = output_mask.cuda()
if key in coverage:
#run example through model
with torch.no_grad():
output = probe(input_ids)
output = torch.mul(output, output_mask)
#set masked out items to -inf to get proper probabilities over the candidate senses
output[output == 0] = float('-inf')
output = F.softmax(output, dim=-1)
#get predicted label
pred_id = output.topk(1, dim=-1)[1].squeeze().item()
pred_label = label_space[pred_id]
eval_preds.append((inst[0], pred_label))
#backoff to wsd for lemma+pos
else:
#this is ws1 for given key
pred_label = wn_senses[key][0]
eval_preds.append((inst[0], pred_label))
return eval_preds
def train_probe(args):
lr = args.lr
bsz = args.bsz
#create passed in ckpt dir if doesn't exist
if not os.path.exists(args.ckpt): os.mkdir(args.ckpt)
'''
LOAD PRETRAINED BERT MODEL
'''
#model loading code based on pytorch_transformers README example
tokenizer = load_tokenizer(args.encoder_name)
pretrained_model, output_dim = load_pretrained_model(args.encoder_name)
pretrained_model = pretrained_model.cuda()
'''
LOADING IN TRAINING AND EVAL DATA
'''
print('Loading data + preprocessing...')
sys.stdout.flush()