class EntitySymbolTest(unittest.TestCase):
def setUp(self):
entity_dump_dir = "test/data/entity_loader/entity_data/entity_mappings"
self.entity_symbols = EntitySymbols(load_dir=entity_dump_dir,
alias_cand_map_file="alias2qids.json")
def test_load_entites_keep_noncandidate(self):
truealias2qids = {
'alias1': [["Q1", 10.0], ["Q4", 6]],
'multi word alias2': [["Q2", 5.0], ["Q1", 3], ["Q4", 2]],
'alias3': [["Q1", 30.0]],
'alias4': [["Q4", 20], ["Q3", 15.0], ["Q2", 1]]
}
trueqid2title = {
'Q1': "alias1",
'Q2': "multi alias2",
'Q3': "word alias3",
'Q4': "nonalias4"
}
# the non-candidate class is included in entity_dump
trueqid2eid = {
'Q1': 1,
'Q2': 2,
'Q3': 3,
'Q4': 4
}
self.assertEqual(self.entity_symbols.max_candidates, 3)
self.assertEqual(self.entity_symbols.max_alias_len, 3)
self.assertDictEqual(self.entity_symbols._alias2qids, truealias2qids)
self.assertDictEqual(self.entity_symbols._qid2title, trueqid2title)
self.assertDictEqual(self.entity_symbols._qid2eid, trueqid2eid)
def test_getters(self):
self.assertEqual(self.entity_symbols.get_qid(1), 'Q1')
self.assertSetEqual(set(self.entity_symbols.get_all_aliases()),
{'alias1', 'multi word alias2', 'alias3', 'alias4'})
self.assertEqual(self.entity_symbols.get_eid('Q3'), 3)
self.assertListEqual(self.entity_symbols.get_qid_cands('alias1'), ['Q1', 'Q4'])
self.assertListEqual(self.entity_symbols.get_qid_cands('alias1', max_cand_pad=True), ['Q1', 'Q4', '-1'])
self.assertListEqual(self.entity_symbols.get_eid_cands('alias1', max_cand_pad=True), [1, 4, -1])
self.assertEqual(self.entity_symbols.get_title('Q1'), 'alias1')
def test_getters(self):
truealias2qids = {
"alias1": [["Q1", 10.0], ["Q4", 6]],
"multi word alias2": [["Q2", 5.0], ["Q1", 3], ["Q4", 2]],
"alias3": [["Q1", 30.0]],
"alias4": [["Q4", 20], ["Q3", 15.0], ["Q2", 1]],
}
trueqid2title = {
"Q1": "alias1",
"Q2": "multi alias2",
"Q3": "word alias3",
"Q4": "nonalias4",
}
entity_symbols = EntitySymbols(
max_candidates=3,
alias2qids=truealias2qids,
qid2title=trueqid2title,
)
self.assertEqual(entity_symbols.get_qid(1), "Q1")
self.assertSetEqual(
set(entity_symbols.get_all_aliases()),
{"alias1", "multi word alias2", "alias3", "alias4"},
)
self.assertEqual(entity_symbols.get_eid("Q3"), 3)
self.assertListEqual(entity_symbols.get_qid_cands("alias1"), ["Q1", "Q4"])
self.assertListEqual(
entity_symbols.get_qid_cands("alias1", max_cand_pad=True),
["Q1", "Q4", "-1"],
)
self.assertListEqual(
entity_symbols.get_eid_cands("alias1", max_cand_pad=True), [1, 4, -1]
)
self.assertEqual(entity_symbols.get_title("Q1"), "alias1")
self.assertEqual(entity_symbols.get_alias_idx("alias1"), 0)
self.assertEqual(entity_symbols.get_alias_from_idx(1), "alias3")
self.assertEqual(entity_symbols.alias_exists("alias3"), True)
self.assertEqual(entity_symbols.alias_exists("alias5"), False)
class Annotator():
"""
Annotator class: convenient wrapper of preprocessing and model eval to allow for
annotating single sentences at a time for quick experimentation, e.g. in notebooks.
"""
def __init__(self, config_args, device='cuda', max_alias_len=6,
cand_map=None, threshold=0.0):
self.args = config_args
self.device = device
logger.info("Reading entity database")
self.entity_db = EntitySymbols(os.path.join(self.args.data_config.entity_dir,
self.args.data_config.entity_map_dir),
alias_cand_map_file=self.args.data_config.alias_cand_map)
logger.info("Reading word tokenizers")
self.word_db = data_utils.load_wordsymbols(self.args.data_config, is_writer=True, distributed=False)
logger.info("Loading model")
self.model = self._load_model()
self.max_alias_len = max_alias_len
if cand_map is None:
alias_map = self.entity_db._alias2qids
else:
logger.info(f"Loading candidate map")
alias_map = ujson.load(open(cand_map))
self.all_aliases_trie = get_all_aliases(alias_map, logger=logging.getLogger())
logger.info("Reading in alias table")
self.alias_table = AliasEntityTable(args=self.args, entity_symbols=self.entity_db)
# minimum probability of prediction to return mention
self.threshold = threshold
# get batch_on_the_fly embeddings _and_ the batch_prep embeddings
self.batch_on_the_fly_embs = {}
for i, emb in enumerate(self.args.data_config.ent_embeddings):
if 'batch_prep' in emb and emb['batch_prep'] is True:
self.args.data_config.ent_embeddings[i]['batch_on_the_fly'] = True
del self.args.data_config.ent_embeddings[i]['batch_prep']
if 'batch_on_the_fly' in emb and emb['batch_on_the_fly'] is True:
mod, load_class = import_class("bootleg.embeddings", emb.load_class)
try:
self.batch_on_the_fly_embs[emb.key] = getattr(mod, load_class)(main_args=self.args,
emb_args=emb['args'],
entity_symbols=self.entity_db,
model_device=None, word_symbols=None)
except AttributeError as e:
print(f'No prep method found for {emb.load_class} with error {e}')
except Exception as e:
print("ERROR", e)
def _load_model(self):
model_state_dict = torch.load(self.args.run_config.init_checkpoint,
map_location=lambda storage, loc: storage)['model']
model = Model(args=self.args, model_device=self.device,
entity_symbols=self.entity_db, word_symbols=self.word_db).to(self.device)
# remove distributed naming if it exists
if not self.args.run_config.distributed:
new_state_dict = OrderedDict()
for k, v in model_state_dict.items():
if 'module.' in k and k[:len('module.')] == 'module.':
name = k[len('module.'):]
new_state_dict[name] = v
# we renamed all layers due to distributed naming
if len(new_state_dict) == len(model_state_dict):
model_state_dict = new_state_dict
else:
assert len(new_state_dict) == 0
model.load_state_dict(model_state_dict, strict=True)
# must set model in eval mode
model.eval()
return model
def extract_mentions(self, text):
found_aliases, found_spans = find_aliases_in_sentence_tag(text, self.all_aliases_trie, self.max_alias_len)
return {'sentence': text,
'aliases': found_aliases,
'spans': found_spans,
# we don't know the true QID
'qids': ['Q-1' for i in range(len(found_aliases))],
'gold': [True for i in range(len(found_aliases))]}
def set_threshold(self, value):
self.threshold = value
def label_mentions(self, text_list):
if type(text_list) is str:
text_list = [text_list]
else:
assert type(text_list) is list and len(text_list) > 0 and type(
text_list[0]) is str, f"We only accept inputs of strings and lists of strings"
ebs = self.args.run_config.eval_batch_size
total_start_exs = 0
total_final_exs = 0
dropped_by_thresh = 0
final_char_spans = []
batch_example_aliases = []
batch_example_aliases_locs_start = []
batch_example_aliases_locs_end = []
batch_example_alias_list_pos = []
batch_example_true_entities = []
batch_word_indices = []
batch_spans_arr = []
batch_aliases_arr = []
batch_idx_unq = []
batch_subsplit_idx = []
for idx_unq, text in tqdm(enumerate(text_list), desc="Prepping data", total=len(text_list)):
sample = self.extract_mentions(text)
total_start_exs += len(sample['aliases'])
char_spans = self.get_char_spans(sample['spans'], text)
final_char_spans.append(char_spans)
idxs_arr, aliases_to_predict_per_split, spans_arr, phrase_tokens_arr, pos_idxs = sentence_utils.split_sentence(
max_aliases=self.args.data_config.max_aliases,
phrase=sample['sentence'],
spans=sample['spans'],
aliases=sample['aliases'],
aliases_seen_by_model=[i for i in range(len(sample['aliases']))],
seq_len=self.args.data_config.max_word_token_len,
word_symbols=self.word_db)
aliases_arr = [[sample['aliases'][idx] for idx in idxs] for idxs in idxs_arr]
old_spans_arr = [[sample['spans'][idx] for idx in idxs] for idxs in idxs_arr]
qids_arr = [[sample['qids'][idx] for idx in idxs] for idxs in idxs_arr]
word_indices_arr = [self.word_db.convert_tokens_to_ids(pt) for pt in phrase_tokens_arr]
# iterate over each sample in the split
for sub_idx in range(len(idxs_arr)):
# ====================================================
# GENERATE MODEL INPUTS
# ====================================================
aliases_to_predict_arr = aliases_to_predict_per_split[sub_idx]
assert len(aliases_to_predict_arr) >= 0, f'There are no aliases to predict for an example. This should not happen at this point.'
assert len(aliases_arr[
sub_idx]) <= self.args.data_config.max_aliases, f'Each example should have no more that {self.args.data_config.max_aliases} max aliases. {sample} does.'
example_aliases = np.ones(self.args.data_config.max_aliases) * PAD_ID
example_aliases_locs_start = np.ones(self.args.data_config.max_aliases) * PAD_ID
example_aliases_locs_end = np.ones(self.args.data_config.max_aliases) * PAD_ID
example_alias_list_pos = np.ones(self.args.data_config.max_aliases) * PAD_ID
example_true_entities = np.ones(self.args.data_config.max_aliases) * PAD_ID
for mention_idx, alias in enumerate(aliases_arr[sub_idx]):
span_start_idx, span_end_idx = spans_arr[sub_idx][mention_idx]
# generate indexes into alias table.
alias_trie_idx = self.entity_db.get_alias_idx(alias)
alias_qids = np.array(self.entity_db.get_qid_cands(alias))
if not qids_arr[sub_idx][mention_idx] in alias_qids:
# assert not data_args.train_in_candidates
if not self.args.data_config.train_in_candidates:
# set class label to be "not in candidate set"
true_entity_idx = 0
else:
true_entity_idx = -2
else:
# Here we are getting the correct class label for training.
# Our training is "which of the max_entities entity candidates is the right one (class labels 1 to max_entities) or is it none of these (class label 0)".
# + (not discard_noncandidate_entities) is to ensure label 0 is reserved for "not in candidate set" class
true_entity_idx = np.nonzero(alias_qids == qids_arr[sub_idx][mention_idx])[0][0] + (
not self.args.data_config.train_in_candidates)
example_aliases[mention_idx] = alias_trie_idx
example_aliases_locs_start[mention_idx] = span_start_idx
# The span_idxs are [start, end). We want [start, end]. So subtract 1 from end idx.
example_aliases_locs_end[mention_idx] = span_end_idx - 1
example_alias_list_pos[mention_idx] = idxs_arr[sub_idx][mention_idx]
# leave as -1 if it's not an alias we want to predict; we get these if we split a sentence and need to only predict subsets
if mention_idx in aliases_to_predict_arr:
example_true_entities[mention_idx] = true_entity_idx
# get word indices
word_indices = word_indices_arr[sub_idx]
batch_example_aliases.append(example_aliases)
batch_example_aliases_locs_start.append(example_aliases_locs_start)
batch_example_aliases_locs_end.append(example_aliases_locs_end)
batch_example_alias_list_pos.append(example_alias_list_pos)
batch_example_true_entities.append(example_true_entities)
batch_word_indices.append(word_indices)
batch_aliases_arr.append(aliases_arr[sub_idx])
# Add the orginal sample spans because spans_arr is w.r.t BERT subword token
batch_spans_arr.append(old_spans_arr[sub_idx])
batch_idx_unq.append(idx_unq)
batch_subsplit_idx.append(sub_idx)
batch_example_aliases = torch.tensor(batch_example_aliases).long()
batch_example_aliases_locs_start = torch.tensor(batch_example_aliases_locs_start, device=self.device)
batch_example_aliases_locs_end = torch.tensor(batch_example_aliases_locs_end, device=self.device)
batch_example_true_entities = torch.tensor(batch_example_true_entities, device=self.device)
batch_word_indices = torch.tensor(batch_word_indices, device=self.device)
final_pred_cands = [[] for _ in range(len(text_list))]
final_all_cands = [[] for _ in range(len(text_list))]
final_cand_probs = [[] for _ in range(len(text_list))]
final_pred_probs = [[] for _ in range(len(text_list))]
final_titles = [[] for _ in range(len(text_list))]
final_spans = [[] for _ in range(len(text_list))]
final_aliases = [[] for _ in range(len(text_list))]
for b_i in tqdm(range(0, batch_example_aliases.shape[0], ebs), desc="Evaluating model"):
# entity indices from alias table (these are the candidates)
batch_entity_indices = self.alias_table(batch_example_aliases[b_i:b_i + ebs])
# all CPU embs have to retrieved on the fly
batch_on_the_fly_data = {}
for emb_name, emb in self.batch_on_the_fly_embs.items():
batch_prep = []
for j in range(b_i, min(b_i + ebs, batch_example_aliases.shape[0])):
batch_prep.append(emb.batch_prep(batch_example_aliases[j], batch_entity_indices[j - b_i]))
batch_on_the_fly_data[emb_name] = torch.tensor(batch_prep, device=self.device)
alias_idx_pair_sent = [batch_example_aliases_locs_start[b_i:b_i + ebs], batch_example_aliases_locs_end[b_i:b_i + ebs]]
word_indices = batch_word_indices[b_i:b_i + ebs]
alias_indices = batch_example_aliases[b_i:b_i + ebs]
entity_indices = torch.tensor(batch_entity_indices, device=self.device)
outs, entity_pack, _ = self.model(
alias_idx_pair_sent=alias_idx_pair_sent,
word_indices=word_indices,
alias_indices=alias_indices,
entity_indices=entity_indices,
batch_prepped_data={},
batch_on_the_fly_data=batch_on_the_fly_data)
# ====================================================
# EVALUATE MODEL OUTPUTS
# ====================================================
final_loss_vals = outs[DISAMBIG][FINAL_LOSS]
# recover predictions
probs = torch.exp(eval_utils.masked_class_logsoftmax(pred=final_loss_vals,
mask=~entity_pack.mask, dim=2))
max_probs, max_probs_indices = probs.max(2)
for ex_i in range(final_loss_vals.shape[0]):
idx_unq = batch_idx_unq[b_i + ex_i]
subsplit_idx = batch_subsplit_idx[b_i + ex_i]
entity_cands = eval_utils.map_aliases_to_candidates(self.args.data_config.train_in_candidates,
self.entity_db,
batch_aliases_arr[b_i + ex_i])
# batch size is 1 so we can reshape
probs_ex = probs[ex_i].detach().cpu().numpy().reshape(self.args.data_config.max_aliases, probs.shape[2])
for alias_idx, true_entity_pos_idx in enumerate(batch_example_true_entities[b_i + ex_i]):
if true_entity_pos_idx != PAD_ID:
pred_idx = max_probs_indices[ex_i][alias_idx]
pred_prob = max_probs[ex_i][alias_idx].item()
all_cands = entity_cands[alias_idx]
pred_qid = all_cands[pred_idx]
if pred_prob > self.threshold:
final_all_cands[idx_unq].append(all_cands)
final_cand_probs[idx_unq].append(probs_ex[alias_idx])
final_pred_cands[idx_unq].append(pred_qid)
final_pred_probs[idx_unq].append(pred_prob)
final_aliases[idx_unq].append(batch_aliases_arr[b_i + ex_i][alias_idx])
final_spans[idx_unq].append(batch_spans_arr[b_i + ex_i][alias_idx])
final_titles[idx_unq].append(self.entity_db.get_title(pred_qid) if pred_qid != 'NC' else 'NC')
total_final_exs += 1
else:
dropped_by_thresh += 1
assert total_final_exs + dropped_by_thresh == total_start_exs, f"Something went wrong and we have predicted fewer mentions than extracted. Start {total_start_exs}, Out {total_final_exs}, No cand {dropped_by_thresh}"
return final_pred_cands, final_pred_probs, final_titles, final_all_cands, final_cand_probs, final_spans, final_aliases
def get_char_spans(self, spans, text):
query_toks = text.split()
char_spans = []
for span in spans:
space_btwn_toks = len(' '.join(query_toks[0:span[0] + 1])) - \
len(' '.join(query_toks[0:span[0]])) - \
len(
query_toks[span[0]])
char_b = len(' '.join(query_toks[0:span[0]])) + space_btwn_toks
char_e = char_b + len(' '.join(query_toks[span[0]:span[1]]))
char_spans.append([char_b, char_e])
return char_spans