def predictKTactics(self, context: TacticContext,
k: int) -> List[Prediction]:
assert self.training_args
assert self._model
num_stem_poss = get_num_tokens(self._metadata)
stem_width = min(self.training_args.max_beam_width, num_stem_poss,
k**2)
tokenized_premises, hyp_features, \
nhyps_batch, tokenized_goal, \
goal_mask, \
word_features, vec_features = \
sample_fpa(extract_dataloader_args(self.training_args),
self._metadata,
context.relevant_lemmas,
context.prev_tactics,
context.hypotheses,
context.goal)
num_hyps = nhyps_batch[0]
stem_distribution = self._model.stem_classifier(
LongTensor(word_features), FloatTensor(vec_features))
stem_certainties, stem_idxs = stem_distribution.topk(stem_width)
goals_batch = LongTensor(tokenized_goal)
goal_arg_values = self._model.goal_args_model(
stem_idxs.view(1 * stem_width),
goals_batch.view(1, 1, self.training_args.max_length)
.expand(-1, stem_width, -1).contiguous()
.view(1 * stem_width,
self.training_args.max_length))\
.view(1, stem_width,
self.training_args.max_length + 1)
goal_arg_values = torch.where(
torch.ByteTensor(goal_mask).view(1, 1,
self.training_args.max_length +
1).expand(-1, stem_width, -1),
goal_arg_values, torch.full_like(goal_arg_values, -float("Inf")))
assert goal_arg_values.size() == torch.Size([1, stem_width,
self.training_args.max_length + 1]),\
"goal_arg_values.size(): {}; stem_width: {}".format(goal_arg_values.size(),
stem_width)
num_probs = 1 + num_hyps + self.training_args.max_length
goal_symbols = get_fpa_words(context.goal)
num_valid_probs = (1 + num_hyps + len(goal_symbols)) * stem_width
if num_hyps > 0:
encoded_goals = self._model.goal_encoder(goals_batch)\
.view(1, 1, self.training_args.hidden_size)
hyps_batch = LongTensor(tokenized_premises)
assert hyps_batch.size() == torch.Size([1, num_hyps,
self.training_args.max_length]), \
(hyps_batch.size(),
num_hyps,
self.training_args.max_length)
hypfeatures_batch = FloatTensor(hyp_features)
assert hypfeatures_batch.size() == \
torch.Size([1, num_hyps, hypFeaturesSize()]), \
(hypfeatures_batch.size(), num_hyps, hypFeaturesSize())
hyp_arg_values = self.runHypModel(stem_idxs, encoded_goals,
hyps_batch, hypfeatures_batch)
assert hyp_arg_values.size() == \
torch.Size([1, stem_width, num_hyps])
total_values = torch.cat((goal_arg_values, hyp_arg_values), dim=2)
else:
total_values = goal_arg_values
all_prob_batches = self._softmax((total_values +
stem_certainties.view(1, stem_width, 1)
.expand(-1, -1, num_probs))
.contiguous()
.view(1, stem_width * num_probs))\
.view(stem_width * num_probs)
final_probs, final_idxs = all_prob_batches.topk(k)
assert not torch.isnan(final_probs).any()
assert final_probs.size() == torch.Size([k])
row_length = self.training_args.max_length + num_hyps + 1
stem_keys = final_idxs // row_length
assert stem_keys.size() == torch.Size([k])
assert stem_idxs.size() == torch.Size([1,
stem_width]), stem_idxs.size()
prediction_stem_idxs = stem_idxs.view(stem_width).index_select(
0, stem_keys)
assert prediction_stem_idxs.size() == torch.Size([k]), \
prediction_stem_idxs.size()
arg_idxs = final_idxs % row_length
assert arg_idxs.size() == torch.Size([k])
if self.training_args.lemma_args:
all_hyps = context.hypotheses + context.relevant_lemmas
else:
all_hyps = context.hypotheses
return [
Prediction(
decode_fpa_result(extract_dataloader_args(self.training_args),
self._metadata, all_hyps, context.goal,
stem_idx.item(), arg_idx.item()),
math.exp(prob)) for stem_idx, arg_idx, prob in islice(
zip(prediction_stem_idxs, arg_idxs, final_probs),
min(k, num_valid_probs))
]
def predictKTactics_batch(self, context_batch: List[TacticContext],
k: int) \
-> List[List[Prediction]]:
assert self.training_args
assert self._model
num_stem_poss = get_num_tokens(self._metadata)
stem_width = min(self.training_args.max_beam_width, num_stem_poss,
k**2)
batch_size = len(context_batch)
tprems_batch, pfeat_batch, \
nhyps_batch, tgoals_batch, \
goal_masks_batch, \
wfeats_batch, vfeats_batch = \
sample_fpa_batch(extract_dataloader_args(self.training_args),
self._metadata,
[context_py2r(context)
for context in context_batch])
for tprem, pfeat, nhyp, tgoal, masks, wfeat, vfeat, context \
in zip(tprems_batch, pfeat_batch,
nhyps_batch, tgoals_batch,
goal_masks_batch, wfeats_batch,
vfeats_batch, context_batch):
s_tprem, s_pfeat, s_nhyp, s_tgoal, s_masks, s_wfeat, s_vfeat = \
sample_fpa(extract_dataloader_args(self.training_args),
self._metadata,
context.relevant_lemmas,
context.prev_tactics,
context.hypotheses,
context.goal)
assert len(s_tprem) == 1
assert len(tprem) == len(s_tprem[0])
for p1, p2 in zip(tprem, s_tprem[0]):
assert p1 == p2, (p1, p2)
assert len(s_pfeat) == 1
assert len(pfeat) == len(s_pfeat[0])
for f1, f2 in zip(pfeat, s_pfeat[0]):
assert f1 == f2, (f1, f2)
assert s_nhyp[0] == nhyp, (s_nhyp[0], nhyp)
assert s_tgoal[0] == tgoal, (s_tgoal[0], tgoal)
assert s_masks[0] == masks, (s_masks[0], masks)
assert s_wfeat[0] == wfeat, (s_wfeat[0], wfeat)
assert s_vfeat[0] == vfeat, (s_vfeat[0], vfeat)
stem_distribution = self._model.stem_classifier(
LongTensor(wfeats_batch), FloatTensor(vfeats_batch))
stem_certainties_batch, stem_idxs_batch = stem_distribution.topk(
stem_width)
goals_batch = LongTensor(tgoals_batch)
goal_arg_values = self._model.goal_args_model(
stem_idxs_batch.view(batch_size * stem_width),
goals_batch.view(batch_size, 1, self.training_args.max_length)
.expand(-1, stem_width, -1).contiguous()
.view(batch_size * stem_width,
self.training_args.max_length))\
.view(batch_size, stem_width,
self.training_args.max_length + 1)
goal_arg_values = torch.where(
torch.ByteTensor(goal_masks_batch).view(
batch_size, 1,
self.training_args.max_length + 1).expand(-1, stem_width, -1),
goal_arg_values, torch.full_like(goal_arg_values, -float("Inf")))
encoded_goals_batch = self._model.goal_encoder(goals_batch)
stems_expanded_batch = torch.cat([
stem_idxs.view(1, stem_width).expand(
num_hyps, stem_width).contiguous().view(num_hyps * stem_width)
for stem_idxs, num_hyps, in zip(stem_idxs_batch, nhyps_batch)
])
egoals_expanded_batch = torch.cat([
encoded_goal.view(1, self.training_args.hidden_size).expand(
num_hyps * stem_width, -1).contiguous()
for encoded_goal, num_hyps in zip(encoded_goals_batch, nhyps_batch)
])
tprems_expanded_batch = torch.cat([
LongTensor(tpremises).view(
1, -1, self.training_args.max_length).expand(
stem_width, -1,
-1).contiguous().view(-1, self.training_args.max_length)
for tpremises in tprems_batch
])
pfeat_expanded_batch = torch.cat([
FloatTensor(premise_features).view(1, num_hyps, 2).expand(
stem_width, -1, -1).contiguous().view(num_hyps * stem_width, 2)
for premise_features, num_hyps in zip(pfeat_batch, nhyps_batch)
])
prem_arg_values = self._model.hyp_model(stems_expanded_batch,
egoals_expanded_batch,
tprems_expanded_batch,
pfeat_expanded_batch)
prem_arg_values_split = prem_arg_values.split(
[num_hyps * stem_width for num_hyps in nhyps_batch])
total_values_list = [
torch.cat((goal_values, prem_values.view(stem_width, -1)),
dim=1) for goal_values, prem_values in zip(
goal_arg_values, prem_arg_values_split)
]
all_probs_list = [
self._softmax((total_values + stem_certainties.view(
stem_width, 1).expand_as(total_values)).contiguous().view(
1, -1)).view(-1) for total_values, stem_certainties in zip(
total_values_list, stem_certainties_batch)
]
final_probs_list, final_idxs_list = zip(
*[probs.topk(k) for probs in all_probs_list])
stem_keys_list = [
final_idxs // (self.training_args.max_length + num_hyps + 1)
for final_idxs, num_hyps in zip(final_idxs_list, nhyps_batch)
]
stem_idxs_list = [
stem_idxs.view(stem_width).index_select(0, stem_keys)
for stem_idxs, stem_keys in zip(stem_idxs_batch, stem_keys_list)
]
arg_idxs_list = [
final_idxs % (self.training_args.max_length + num_hyps + 1)
for final_idxs, num_hyps in zip(final_idxs_list, nhyps_batch)
]
predictions = [[
Prediction(
decode_fpa_result(extract_dataloader_args(self.training_args),
self._metadata,
context.hypotheses + context.relevant_lemmas,
context.goal,
stem_idx.item(), arg_idx.item()),
math.exp(prob)) for stem_idx, arg_idx, prob in islice(
zip(stem_idxs, arg_idxs, final_probs),
min(k, 1 + num_hyps + len(get_fpa_words(context.goal))))
] for stem_idxs, arg_idxs, final_probs, context, num_hyps in zip(
stem_idxs_list, arg_idxs_list, final_probs_list, context_batch,
nhyps_batch)]
for context, pred_list in zip(context_batch, predictions):
for batch_pred, single_pred in zip(
pred_list, self.predictKTactics(context, k)):
assert batch_pred.prediction == single_pred.prediction, \
(batch_pred, single_pred)
return predictions
