def updateNEdirs(prev_laf_dir, temp_laf_dir, new_laf_dir):
changeinNEs = False
for fn in prev_laf_dir:
if fn.endswith('laf.xml'):
prev_laf = os.path.join(prev_laf_dir, fn)
temp_laf = os.path.join(temp_laf_dir, fn)
try:
assert os.path.exists(temp_laf)
except AssertionError:
logging.warn("{} processed last iteration but not this one".format(fn))
for fn in temp_laf_dir:
if fn.endswith('laf.xml'):
prev_laf = os.path.join(prev_laf_dir, fn)
temp_laf = os.path.join(temp_laf_dir, fn)
try:
assert os.path.exists(prev_laf)
except AssertionError:
logging.warn("{} processed this iteration but not the last. Skipping...".format(fn))
continue
prev_laf_doc = load_doc(prev_laf, LAFDocument, logger)
temp_laf_doc = load_doc(temp_laf, LAFDocument, logger)
doc_id = prev_laf_doc.doc_id
prev_mentions = [[tag, extent, start_char, end_char] for [entity_id, tag, extent, start_char, end_char] in prev_laf_doc.mentions()]
prev_spans = [(start_char, end_char) for [tag, extent, start_char, end_char] in prev_mentions]
temp_mentions = [[tag, extent, start_char, end_char] for [entity_id, tag, extent, start_char, end_char] in temp_laf_doc.mentions()]
mentions = []
for m in prev_mentions:
mentions.append(m)
for m in temp_mentions:
if (m[2], m[3]) not in prev_spans:
mentions.append(m)
changeinNEs == True
# Sort new mentions list by start_char then end_char
mentions = sorted(mentions, key = lambda x: (int(x[2]), int(x[3])))
n=1
for tag, extent, start_char, end_char in mentions:
entity_id = '{}-NE{}'.format(doc_id, n)
mentions.append([entity_id, tag, extent, start_char, end_char])
n+=1
laf = os.path.join(new_laf_dir, fn)
laf_doc = LAFDocument(mentions=mentions, lang=ltf_doc.lang, doc_id=doc_id)
laf_doc.write_to_file(laf)
return new_laf_dir, changeinNEs
def tag_file(ltf, aligner, enc, chunker, modelf, tagged_dir, tagged_ext):
"""Extract features for tokenization in LTF file and tag named entities.
Inputs
------
ltf : str
LTF file.
aligner : align.Aligner
Aligner instance used to obtain character onsets/offsets of discovered
mentions.
enc : features.Encoder
Encoder instance for feature extraction.
chunker : chunk.ChunkEncoder
ChunkEncoder instance for obtaining token onsets/offsets of discovered
mentions from tag sequences.
modelf : str
CRFSuite model file.
tagged_dir : str
Directory to which to output2 LAF files.
tagged_ext : str
Extension to used for output2 LAF files.
"""
# Create working directory.
temp_dir = tempfile.mkdtemp()
# Load LTF.
#print ltf # todo
ltf_doc = load_doc(ltf, LTFDocument, logger)
if ltf_doc is None:
shutil.rmtree(temp_dir)
return
# Attempt tagging.
try:
# Extract tokens.
tokens, token_ids, token_onsets, token_offsets = ltf_doc.tokenized()
txt = ltf_doc.text()
spans = aligner.align(txt, tokens)
# Extract features
featsf = os.path.join(temp_dir, 'feats.txt')
feats = enc.get_feats(tokens)
write_crfsuite_file(featsf, feats)
# Tag.
# print "tmep_dir"+temp_dir
tagsf = os.path.join(temp_dir, 'tags.txt')
#probf = os.path.join(temp_dir, 'probs.txt')
cmd = [
'/home/wangtianlu/local/bin/crfsuite', 'tag', '-m', modelf, featsf
]
with open(tagsf, 'w') as f:
subprocess.call(cmd, stdout=f)
# Load tagged output2.
probf1 = ltf.replace('ltf', 'probs')
probf = probf1.replace('test', 'probs')
# print probf
cmd_ = [
'/home/wangtianlu/local/bin/crfsuite', 'tag', '-m', modelf, '-i',
featsf
]
with open(probf, 'w') as f:
subprocess.call(cmd_, stdout=f)
# maxprobf = ltf.replace('ltf', 'maxprobs')
#
# cmd_ = ['/Users/koala/Documents/lab/Blender/LORELEI/active_learning/ne-tagger/lib/crf/bin/crfsuite','tag',
# '-m', modelf, '-i',
# featsf]
# with open(maxprobf, 'w') as f:
# subprocess.call(cmd_, stdout=f)
with open(tagsf, 'r') as f:
tags = [line.strip() for line in f]
# print len(tags) # todo
tags = tags[:len(tokens)]
# print len(tags) # todo
# print 'this is tags'
# print tags # todo
# Chunk tags.
chunks = chunker.tags_to_chunks(tags) # todo:bughere
# Construct mentions.
doc_id = ltf_doc.doc_id
mentions = []
n = 1
for token_bi, token_ei, tag in chunks:
if tag == 'O':
continue
# Assign entity id.
entity_id = '%s-NE%d' % (doc_id, n)
# Determine char onsets/offset for mention extent.
start_char = token_onsets[token_bi]
end_char = token_offsets[token_ei]
# Finally, determine text of extent and append.
extent_bi = spans[token_bi][0]
extent_ei = spans[token_ei][1]
extent = txt[extent_bi:extent_ei + 1]
mentions.append([
entity_id, # entity id
tag, # NE type
extent, # extent text
start_char, # extent char onset
end_char, # extent char offset
])
n += 1
# Write detected mentions to LAF file.
bn = os.path.basename(ltf)
laf = os.path.join(tagged_dir, bn.replace('.ltf.xml', tagged_ext))
laf_doc = LAFDocument(mentions=mentions,
lang=ltf_doc.lang,
doc_id=doc_id)
laf_doc.write_to_file(laf)
except KeyError:
logger.warn('Problem with %s. Skipping.' % ltf)
# Clean up.
shutil.rmtree(temp_dir)
def tag_file(ltf, aligner, enc, chunker, modelf, tagged_dir, tagged_ext):
"""Extract features for tokenization in LTF file and tag named entities.
Inputs
------
ltf : str
LTF file.
aligner : align.Aligner
Aligner instance used to obtain character onsets/offsets of discovered
mentions.
enc : features.Encoder
Encoder instance for feature extraction.
chunker : chunk.ChunkEncoder
ChunkEncoder instance for obtaining token onsets/offsets of discovered
mentions from tag sequences.
modelf : str
CRFSuite model file.
tagged_dir : str
Directory to which to output LAF files.
tagged_ext : str
Extension to used for output LAF files.
"""
# Create working directory.
temp_dir = tempfile.mkdtemp();
# Load LTF.
ltf_doc = load_doc(ltf, LTFDocument, logger);
if ltf_doc is None:
shutil.rmtree(temp_dir);
return;
# Attempt tagging.
try:
# Extract tokens.
tokens, token_ids, token_onsets, token_offsets = ltf_doc.tokenized();
txt = ltf_doc.text();
spans = aligner.align(txt, tokens);
# Extract features
featsf = os.path.join(temp_dir, 'feats.txt');
feats = enc.get_feats(tokens);
write_crfsuite_file(featsf, feats);
# Tag.
tagsf = os.path.join(temp_dir, 'tags.txt');
cmd = ['crfsuite', 'tag',
'-m', modelf,
featsf];
with open(tagsf, 'w') as f:
subprocess.call(' '.join(cmd), shell=True, stdout=f);
subprocess.call(' '.join(cmd), shell=True, stdout=f, env={'CRFSUITE': '/usr/local/bin'});
# Load tagged output.
with open(tagsf, 'r') as f:
tags = [line.strip() for line in f];
tags = tags[:len(tokens)];
# Chunk tags.
chunks = chunker.tags_to_chunks(tags);
# Construct mentions.
doc_id = ltf_doc.doc_id;
mentions = [];
n = 1;
for token_bi, token_ei, tag in chunks:
if tag == 'O':
continue;
# Assign entity id.
entity_id = '%s-NE%d' % (doc_id, n);
# Determine char onsets/offset for mention extent.
start_char = token_onsets[token_bi];
end_char = token_offsets[token_ei];
# Finally, determine text of extent and append.
extent_bi = spans[token_bi][0];
extent_ei = spans[token_ei][1];
extent = txt[extent_bi:extent_ei+1];
mentions.append([entity_id, # entity id
tag, # NE type
extent, # extent text
start_char, # extent char onset
end_char, # extent char offset
]);
n += 1;
# Write detected mentions to LAF file.
bn = os.path.basename(ltf);
laf = os.path.join(tagged_dir, bn.replace('.ltf.xml', tagged_ext));
laf_doc = LAFDocument(mentions=mentions, lang=ltf_doc.lang, doc_id=doc_id);
laf_doc.write_to_file(laf);
except KeyError:
logger.warn('Problem with %s. Skipping.' % ltf);
except ValueError:
logger.warn('Problem with %s. Skipping.' % ltf);
# Clean up.
shutil.rmtree(temp_dir);
def tag_file(ltf, aligner, enc, chunker, modelf, tagged_dir, tagged_ext,
threshold, A_vals, B_vals, G_vals):
"""Extract features for tokenization in LTF file and tag named entities.
Inputs
------
ltf : str
LTF file.
aligner : align.Aligner
Aligner instance used to obtain character onsets/offsets of discovered
mentions.
enc : features.Encoder
Encoder instance for feature extraction.
chunker : chunk.ChunkEncoder
ChunkEncoder instance for obtaining token onsets/offsets of discovered
mentions from tag sequences.
modelf : str
CRFSuite model file.
tagged_dir : str
Directory to which to output LAF files.
tagged_ext : str
Extension to used for output LAF files.
"""
# Create working directory.
temp_dir = tempfile.mkdtemp()
# Load LTF.
ltf_doc = load_doc(ltf, LTFDocument, logger)
if ltf_doc is None:
shutil.rmtree(temp_dir)
return
# Attempt tagging.
try:
# Extract tokens.
try:
tokens, token_ids, token_onsets, token_offsets, token_nums, token_As, token_Bs, token_Gs, token_Fs, token_Js = ltf_doc.tokenizedWithABG(
)
except:
tokens, token_ids, token_onsets, token_offsets, token_nums = ltf_doc.tokenized(
)
token_As = token_Bs = token_Gs = token_Fs = token_Js = None
txt = ltf_doc.text()
spans = aligner.align(txt, tokens)
# Extract features
featsf = os.path.join(temp_dir, 'feats.txt')
# feats = enc.get_feats(tokens, token_As, token_Bs, token_Gs);
feats = enc.get_feats(tokens, token_nums, token_As, token_Bs, token_Gs,
token_Fs, token_Js, A_vals, B_vals, G_vals)
write_crfsuite_file(featsf, feats)
shutil.copy(featsf, "featuresfile") #DEBUG
# Tag.
tagsf = os.path.join(temp_dir, 'tags.txt')
cmd = [
'crfsuite',
'tag',
'--marginal', # outputs probability of each tag as extra field in tagsfile
# '--probability', # outputs probability of tag sequence at top of tagsfile
'-m',
modelf,
featsf
]
with open(tagsf, 'w') as f:
subprocess.call(cmd, stdout=f)
shutil.copy(tagsf, "taggingprobs") #DEBUG
# Look for NEs in the tagfile with marginal probs.
# If the tag is 'O', keep it.
# If the tag is anything else, keep if marginal prob is above threshold.
tagsf2 = os.path.join(temp_dir, 'tags2.txt')
"""
Helper method for checking the tag sequence output in the section below.
Checks for full BI*L sequence, returning that seqeunce if mean logprob exceeds
threshold logprob - returns sequence of O's of equal length otherwise.
If the seqeuence contains only one tag, that tag is returned as a U tag.
"""
def _check_BIL_sequence(tags, probs, threshold):
nextpart = ''
if len(tags) < 1:
logging.warn("Empty tag sequence submitted as BI*L sequence.")
elif len(tags) == 1:
logging.warn(
"Tag sequence of length 1 submitted as BI*L sequence.")
if probs[0] >= threshold: # compare probs, not abs vals of logprobs, hence >= and not <=
nextpart = 'U{}'.format(tags[0][1:])
else:
nextpart = 'O\n'
else:
try:
assert tags[0][0] == 'B' and tags[-1][0] == 'L'
except AssertionError:
logging.warn('Incomplete BI*L sequence submitted.')
tags[0] = 'B{}'.format(tags[0][1:])
tags[-1] = 'L{}'.format(tags[-1][1:])
# NElogProb = reduce(lambda x, y: (log(x) * -1) + (log(y) * -1), probs)/len(probs)
# if NElogProb <= (log(threshold) * -1): # compare abs vals of logprobs, hence <= and not >=
count = 0
for prob in probs:
if prob >= threshold:
count += 1
if count >= len(probs) / 2.0:
nextpart = ''.join(tags)
else:
nextpart = 'O\n' * len(NEtags)
return nextpart
""" Retain or reject NE hypotheses based on probs and write new tags file """
with open(tagsf2, 'w') as f_out:
with open(tagsf, 'r') as f_in:
NEtags = None
NEprobs = None
for line in f_in.read().split('\n'):
try:
assert ':' in line
tag, prob = line.strip().split(':')
if tag[0] == 'O':
# if seq in play, check seq
# write tag
if NEtags:
f_out.write(
_check_BIL_sequence(
NEtags, NEprobs, threshold))
NEtags = None
NEprobs = None
f_out.write(tag + '\n')
elif tag[0] == 'U':
# if seq in play, check seq
# if prob >= threshold, write tag
# else, write tag = O
if NEtags:
f_out.write(
_check_BIL_sequence(
NEtags, NEprobs, threshold))
NEtags = None
NEprobs = None
if float(
prob
) >= threshold: # compare probs, not abs vals of logprobs, hence >= and not <=
f_out.write(tag + '\n')
else:
f_out.write('O\n')
elif tag[0] == 'B':
# if seq in play, check seq
# start new seq with tag
if NEtags:
f_out.write(
_check_BIL_sequence(
NEtags, NEprobs, threshold))
NEtags = [tag + '\n']
NEprobs = [float(prob)]
elif tag[0] == 'I':
# if seq in play, add tag to seq
# else, start new seq with tag = B
if NEtags:
NEtags.append(tag + '\n')
NEprobs.append(float(prob))
else:
logging.warn("Found an out of sequence I tag.")
tag = 'B{}'.format(tag[1:])
NEtags = [tag + '\n']
NEprobs = [float(prob)]
elif tag[0] == 'L':
# if seq in play, add tag to seq and check seq
# else, start new seq with tag = B
if NEtags:
NEtags.append(tag + '\n')
NEprobs.append(float(prob))
f_out.write(
_check_BIL_sequence(
NEtags, NEprobs, threshold))
NEtags = None
NEprobs = None
else:
logging.warn("Found an out of sequence L tag.")
tag = 'B{}'.format(tag[1:])
NEtags = [tag + '\n']
NEprobs = [float(prob)]
except AssertionError:
pass
# logging.warn('No ":" in line {}'.format(line)) #DEBUG
if NEtags: # Necessary if tagsf ends with an incomplete BI*L sequence
f_out.write(_check_BIL_sequence(NEtags, NEprobs,
threshold))
NEtags = None
NEprobs = None
tagsf = tagsf2 # Set the checked tag file as the new tag file
# Continue
shutil.copy(tagsf, "tagsfile") #DEBUG
# Load tagged output.
with open(tagsf, 'r') as f:
tags = [line.strip() for line in f]
tags = tags[:len(tokens)]
# Chunk tags.
chunks = chunker.tags_to_chunks(tags)
# Construct mentions.
doc_id = ltf_doc.doc_id
mentions = []
n = 1
for token_bi, token_ei, tag in chunks:
if tag == 'O':
continue
# Assign entity id.
entity_id = '%s-NE%d' % (doc_id, n)
# Determine char onsets/offset for mention extent.
start_char = token_onsets[token_bi]
end_char = token_offsets[token_ei]
# Finally, determine text of extent and append.
extent_bi = spans[token_bi][0]
extent_ei = spans[token_ei][1]
extent = txt[extent_bi:extent_ei + 1]
mentions.append([
entity_id, # entity id
tag, # NE type
extent, # extent text
start_char, # extent char onset
end_char, # extent char offset
])
n += 1
# Write detected mentions to LAF file.
bn = os.path.basename(ltf)
laf = os.path.join(tagged_dir, bn.replace('.ltf.xml', tagged_ext))
laf_doc = LAFDocument(mentions=mentions,
lang=ltf_doc.lang,
doc_id=doc_id)
laf_doc.write_to_file(laf)
except:
logger.warn('Problem with %s. Skipping.' % ltf)
# Clean up.
shutil.rmtree(temp_dir)
def tag_file(ltf, aligner, enc, chunker, modelf, tagged_dir, tagged_ext):
"""Extract features for tokenization in LTF file and tag named entities.
Inputs
------
ltf : str
LTF file.
aligner : align.Aligner
Aligner instance used to obtain character onsets/offsets of discovered
mentions.
enc : features.Encoder
Encoder instance for feature extraction.
chunker : chunk.ChunkEncoder
ChunkEncoder instance for obtaining token onsets/offsets of discovered
mentions from tag sequences.
modelf : str
CRFSuite model file.
tagged_dir : str
Directory to which to output2 LAF files.
tagged_ext : str
Extension to used for output2 LAF files.
"""
# Create working directory.
temp_dir = tempfile.mkdtemp()
# Load LTF.
#print ltf # todo
ltf_doc = load_doc(ltf, LTFDocument, logger)
if ltf_doc is None:
shutil.rmtree(temp_dir)
return
# Attempt tagging.
try:
# Extract tokens.
tokens, token_ids, token_onsets, token_offsets = ltf_doc.tokenized()
txt = ltf_doc.text()
spans = aligner.align(txt, tokens)
# Extract features
featsf = os.path.join(temp_dir, 'feats.txt')
feats = enc.get_feats(tokens)
write_crfsuite_file(featsf, feats)
# Tag.
# print "tmep_dir"+temp_dir
tagsf = os.path.join(temp_dir, 'tags.txt')
#probf = os.path.join(temp_dir, 'probs.txt')
cmd = ['/home/wangtianlu/local/bin/crfsuite', 'tag',
'-m', modelf,
featsf]
with open(tagsf, 'w') as f:
subprocess.call(cmd, stdout=f)
# Load tagged output2.
probf1 = ltf.replace('ltf', 'probs')
probf = probf1.replace('test', 'probs')
# print probf
cmd_ = ['/home/wangtianlu/local/bin/crfsuite', 'tag',
'-m', modelf, '-i',
featsf]
with open(probf, 'w') as f:
subprocess.call(cmd_, stdout=f)
# maxprobf = ltf.replace('ltf', 'maxprobs')
#
# cmd_ = ['/Users/koala/Documents/lab/Blender/LORELEI/active_learning/ne-tagger/lib/crf/bin/crfsuite','tag',
# '-m', modelf, '-i',
# featsf]
# with open(maxprobf, 'w') as f:
# subprocess.call(cmd_, stdout=f)
with open(tagsf, 'r') as f:
tags = [line.strip() for line in f]
# print len(tags) # todo
tags = tags[:len(tokens)]
# print len(tags) # todo
# print 'this is tags'
# print tags # todo
# Chunk tags.
chunks = chunker.tags_to_chunks(tags) # todo:bughere
# Construct mentions.
doc_id = ltf_doc.doc_id
mentions = []
n = 1
for token_bi, token_ei, tag in chunks:
if tag == 'O':
continue
# Assign entity id.
entity_id = '%s-NE%d' % (doc_id, n)
# Determine char onsets/offset for mention extent.
start_char = token_onsets[token_bi]
end_char = token_offsets[token_ei]
# Finally, determine text of extent and append.
extent_bi = spans[token_bi][0]
extent_ei = spans[token_ei][1]
extent = txt[extent_bi:extent_ei+1]
mentions.append([entity_id, # entity id
tag, # NE type
extent, # extent text
start_char, # extent char onset
end_char, # extent char offset
])
n += 1
# Write detected mentions to LAF file.
bn = os.path.basename(ltf)
laf = os.path.join(tagged_dir, bn.replace('.ltf.xml', tagged_ext))
laf_doc = LAFDocument(mentions=mentions, lang=ltf_doc.lang, doc_id=doc_id)
laf_doc.write_to_file(laf)
except KeyError:
logger.warn('Problem with %s. Skipping.' % ltf)
# Clean up.
shutil.rmtree(temp_dir)