def generate_sequence(self, batch, model, data_loader, start_idx, end_len):
XMB = batch["sequences"][:, :start_idx]
MMB = batch["attention_mask"][:, :start_idx]
XMB = model_utils.prepare_position_embeddings(
self.opt, data_loader.vocab_encoder, XMB.unsqueeze(-1))
lm_probs = F.log_softmax(model(
XMB.unsqueeze(1), sequence_mask=MMB), dim=-1)
values, indices = lm_probs[:, -1, :].max(dim=-1)
seqs = indices.clone().unsqueeze(1)
loss = values
counts = 1
next_pos = XMB[:, -1:, 1] + 1
next_x = torch.cat((indices.view(-1, 1), next_pos), -1).unsqueeze(1)
XMB = torch.cat((XMB, next_x), 1)
MMB = torch.cat([MMB, torch.ones(XMB.size(0), 1, device=MMB.device)], 1)
# Sample from top k
for _ in range(self.opt.eval.smax):
lm_probs = F.log_softmax(model(
XMB.unsqueeze(1), sequence_mask=MMB), dim=-1)
# Sample from top k
values, next_idx = lm_probs[:, -1, :].max(dim=-1)
loss += values
counts += 1
next_idx = next_idx.unsqueeze(1)
seqs = torch.cat([seqs, next_idx], 1)
if (next_idx.item() == self.end_token) or (_ == end_len - 1):
break
XMB, MMB = self.append_batch(XMB, next_idx, MMB)
beams = []
for beam in seqs:
beams.append(" ".join("".join(
[data_loader.vocab_decoder[tok.item()].replace(
'</w>', ' ').replace('\n', '')
for tok in beam if tok != self.end_token]).split()))
sampling_result = {
"sequence": beams[0],
"beams": beams,
"beam_losses": [loss.item()],
"loss": loss.item(),
"beam_lengths": [counts],
"length": counts
}
return sampling_result
def _comet_embs(self, comet_input, comet_mask):
batch_size, num_comet_rels = comet_input.size(0), comet_input.size(1)
comet_input = comet_input.view(batch_size * num_comet_rels, -1)
comet_mask = comet_mask.view(batch_size * num_comet_rels, -1).float()
comet_input_with_positions = prepare_position_embeddings(
None, self.comet_encoder.encoder, comet_input.unsqueeze(-1))
comet_embs = self.comet_model.transformer(
comet_input_with_positions.unsqueeze(1),
sequence_mask=comet_mask)[:, -1, :]
return comet_embs.view(batch_size, num_comet_rels, -1)
def batch_conceptnet_generate(opt,
nums,
losses,
batch_variables,
eval_mode=False,
tracking_mode=False):
data_loader = batch_variables["data"]
model = batch_variables["model"]
split = batch_variables["split"]
category = batch_variables["category"]
batch, reset = data_loader.sample_batch(split,
bs=opt.train.dynamic.bs,
cat=category)
input_ = model_utils.prepare_position_embeddings(
opt, data_loader.vocab_encoder, batch["sequences"].unsqueeze(-1))
attention_mask = batch["attention_mask"]
loss_mask = batch["loss_mask"]
targets = input_.squeeze(0)[:, 1:, 0].contiguous().view(-1)
loss, dist = mle_steps(opt.net.model,
model,
input_[:, :-1, :],
targets,
attention_mask[:, :-1],
loss_reduction="none")
# Set loss name
if not eval_mode or batch_variables["category"] == "positive":
micro_name = "total_micro"
macro_name = "total_macro"
else:
micro_name = "negative_micro"
macro_name = "negative_macro"
length = loss_mask.sum(1)
bs = input_.size(0)
final_loss = (loss * loss_mask).sum(1)
update_generation_losses(losses, nums, micro_name, macro_name, bs, length,
(loss * loss_mask).sum(1), split)
final_loss = final_loss / length
outputs = {"loss": final_loss.sum(), "nums": nums, "reset": reset}
if tracking_mode:
outputs["tracking"] = final_loss.squeeze().tolist()
return outputs
tmp = batch["sequences"][:, :context_size_event + 1]
XMB = batch["sequences"][:, :context_size_event + 1]
Ref = batch["sequences"][:, context_size_event + 1:]
MMB = batch["attention_mask"][:, :context_size_event + 1]
init = "".join([
text_encoder.decoder[i].replace('</w>',
' ').replace("<blank>", "___ ")
for i in XMB[:, :-1].squeeze().tolist() if i
])
attr = text_encoder.decoder[XMB[:, -1].item()].strip("<>")
XMB = model_utils.prepare_position_embeddings(opt,
text_encoder.encoder,
XMB.unsqueeze(-1))
sequence_all["event"] = init
sequence_all["effect_type"] = attr
lm_probs = lm_model(XMB.unsqueeze(1), sequence_mask=MMB)
dist = lm_probs[:, -1, :].squeeze()
values, indices = lm_probs[:, -1, :].topk(args.k)
seqs = indices.t().clone()
ended = (seqs == end_token).float()
XMB = XMB.repeat(args.k, 1, 1)
MMB = MMB.repeat(args.k, 1)
next_pos = XMB[:, -1:, 1] + 1
def generate_sequence(self, batch, model, data_loader, start_idx, end_len):
# start_idx = context_size_event + 1
# start_idx = max_e1 + max_r
# end_idx = context_size_effect - 1
# end_idx = max_e2
XMB = batch["sequences"][:, :start_idx]
MMB = batch["attention_mask"][:, :start_idx]
XMB = model_utils.prepare_position_embeddings(
self.opt, data_loader.vocab_encoder, XMB.unsqueeze(-1))
tokens = []
beam_losses = []
# Beam Search
beam_lls, beam_toks, beam_seqs = None, None, None
lm_probs = F.log_softmax(model(XMB.unsqueeze(1), sequence_mask=MMB),
dim=-1)
dist = lm_probs[:, -1, :].squeeze()
beam_lls, beam_toks = dist.topk(self.opt.eval.bs)
beam_losses.append(beam_lls)
ended = (beam_toks == self.end_token).float()
counts = (2 - ended)
beam_toks = beam_toks.unsqueeze(1)
beam_seqs = beam_toks.clone()
XMB = XMB.repeat(self.opt.eval.bs, 1, 1)
MMB = MMB.repeat(self.opt.eval.bs, 1)
next_pos = XMB[:, -1:, 1] + 1
next_x = torch.cat((beam_toks, next_pos), -1).unsqueeze(1)
XMB = torch.cat((XMB, next_x), 1)
MMB = torch.cat(
[MMB, torch.ones(XMB.size(0), 1, device=MMB.device)], 1)
for _ in range(end_len):
# Compute distribution for current beam
lm_probs = F.log_softmax(model(XMB.unsqueeze(1),
sequence_mask=MMB),
dim=-1)
dist = lm_probs[:, -1, :].squeeze()
# get hypothesis tokens for distribution
hyp_beam_lls, hyp_beam_toks = dist.topk(self.opt.eval.bs)
# Compute masks and expand beam
expanded_ended = ended.unsqueeze(1).repeat(1, self.opt.eval.bs)
hypothesis_mask = expanded_ended * \
self.kill_mask + (1 - expanded_ended)
current_beam_lls = beam_lls.unsqueeze(1).repeat(
1, self.opt.eval.bs).view(self.opt.eval.bs**2)
# Compute losses of hypotheses, masking those that have ended
hyp_beam_lls = (hyp_beam_lls.view(self.opt.eval.bs**2) *
hypothesis_mask.view(-1)) + current_beam_lls
# Get normalizer for sequences
temp_counts = counts.unsqueeze(1).repeat(1, self.opt.eval.bs).view(
self.opt.eval.bs**2)
# Select best beams with lowest aggregate loss
beam_lls, top_beam_idxs = (hyp_beam_lls / temp_counts).topk(
self.opt.eval.bs)
# Update placements in beam based on selecetion
beam_losses = [
i.index_select(0, top_beam_idxs // self.opt.eval.bs)
for i in beam_losses
]
ended = ended.index_select(0, top_beam_idxs // self.opt.eval.bs)
counts = temp_counts.index_select(0, top_beam_idxs)
# Save beam losses
beam_losses.append(beam_lls * counts)
# Update beam tokens
ended_mask = (1 - ended).long()
end_replacement = (self.end_token * ended).long()
next_toks = hyp_beam_toks.view(-1)[top_beam_idxs]
beam_toks = next_toks * ended_mask + end_replacement
# Update ended and counts
ended = ended + (beam_toks == self.end_token).float() * (1 - ended)
counts = counts + (1 - ended)
# Update beam sequences
beam_seqs = beam_seqs.t().repeat(self.opt.eval.bs,
1).t().contiguous().view(
self.opt.eval.bs**2,
-1)[top_beam_idxs]
beam_seqs = torch.cat((beam_seqs, beam_toks.unsqueeze(1)), dim=1)
# I have no idea what's going on but Ari's on point with it
XMB = XMB.transpose(0, 1).transpose(1, 2).repeat(
self.opt.eval.bs, 1, 1).transpose(2, 1).transpose(
1, 0).contiguous().view(self.opt.eval.bs**2, XMB.size(1),
XMB.size(2))[top_beam_idxs]
XMB, MMB = self.append_batch(XMB, beam_toks, MMB)
if (beam_toks == self.end_token).sum().item() == self.opt.eval.bs:
break
beams = []
for beam in beam_seqs:
beams.append(" ".join("".join([
data_loader.vocab_decoder[tok.item()].replace(
'</w>', ' ').replace('\n', '') for tok in beam
if tok != self.end_token
]).split()))
sampling_result = {
"sequence": beams[0],
"beams": beams,
"beam_losses": beam_lls.tolist(),
"loss": beam_lls[0].item(),
"beam_lengths": counts.tolist(),
"length": counts[0].item()
}
return sampling_result
def generate_sequence(self, batch, model, data_loader, start_idx, end_len):
# start_idx = context_size_event + 1
# start_idx = max_e1 + max_r
# end_idx = context_size_effect - 1
# end_idx = max_e2
XMB = batch["sequences"][:, :start_idx]
MMB = batch["attention_mask"][:, :start_idx]
XMB = model_utils.prepare_position_embeddings(
self.opt, data_loader.vocab_encoder, XMB.unsqueeze(-1))
lm_probs = F.log_softmax(model(XMB.unsqueeze(1), sequence_mask=MMB),
dim=-1)
values, indices = lm_probs[:, -1, :].topk(self.opt.eval.k)
seqs = indices.t().clone()
losses = -values.view(-1, 1)
ended = (seqs == self.end_token).float()
counts = (1 - ended)
XMB = XMB.repeat(self.opt.eval.k, 1, 1)
MMB = MMB.repeat(self.opt.eval.k, 1)
next_pos = XMB[:, -1:, 1] + 1
next_x = torch.cat((indices.view(self.opt.eval.k, -1), next_pos),
-1).unsqueeze(1)
XMB = torch.cat((XMB, next_x), 1)
MMB = torch.cat(
[MMB, torch.ones(XMB.size(0), 1, device=MMB.device)], 1)
# Sample from top k
for _ in range(end_len):
lm_probs = F.log_softmax(model(XMB.unsqueeze(1),
sequence_mask=MMB),
dim=-1)
# Sample from top k
values, indices = lm_probs[:, -1, :].topk(self.opt.eval.k)
choice = torch.multinomial(values.exp(), 1)
next_idx = indices.gather(-1, choice)
ended = ended + (next_idx == self.end_token).float() * (1 - ended)
next_idx = next_idx * (1 - ended).long() + \
ended.long() * self.end_token
counts += (1 - ended)
seqs = torch.cat([seqs, next_idx], 1)
if ended.sum().item() == self.opt.eval.k:
break
losses -= values.gather(-1, choice) * (1 - ended)
XMB, MMB = self.append_batch(XMB, next_idx, MMB)
beams = []
for beam in seqs:
beams.append(" ".join("".join([
data_loader.vocab_decoder[tok.item()].replace(
'</w>', ' ').replace('\n', '') for tok in beam
if tok != self.end_token
]).split()))
sampling_result = {
"sequence": beams[0],
"beams": beams,
"beam_losses": losses.squeeze().tolist(),
"loss": losses[0].item(),
"beam_lengths": counts.long().squeeze().tolist(),
"length": counts[0].long().item()
}
return sampling_result
