def dump_dep_rstdt(corpus_dir, out_dir, nary_enc):
"""Convert and dump the RST-DT corpus as dependency trees."""
# convert and dump RST trees from train
dir_train = os.path.join(corpus_dir, TRAIN_FOLDER)
if not os.path.isdir(dir_train):
raise ValueError('No such folder: {}'.format(dir_train))
reader_train = Reader(dir_train)
trees_train = reader_train.slurp()
dtrees_train = {doc_name: RstDepTree.from_rst_tree(rst_tree,
nary_enc=nary_enc)
for doc_name, rst_tree in trees_train.items()}
dump_disdep_files(dtrees_train.values(),
os.path.join(out_dir, os.path.basename(dir_train)))
# convert and dump RST trees from test
dir_test = os.path.join(corpus_dir, TEST_FOLDER)
if not os.path.isdir(dir_test):
raise ValueError('No such folder: {}'.format(dir_test))
reader_test = Reader(dir_test)
trees_test = reader_test.slurp()
dtrees_test = {doc_name: RstDepTree.from_rst_tree(rst_tree,
nary_enc=nary_enc)
for doc_name, rst_tree in trees_test.items()}
dump_disdep_files(dtrees_test.values(),
os.path.join(out_dir, os.path.basename(dir_test)))
def read_deps(corpus,
section='all',
nary_enc='chain',
rew_pseudo_rels=False,
mrg_same_units=False):
"""Collect dependencies from the corpus.
Parameters
----------
corpus : dict from str to dict from FileId to RSTTree
Corpus of RST c-trees indexed by {'train', 'test'} then FileId.
section : str, one of {'train', 'test', 'all'}
Section of interest in the RST-DT.
nary_enc : str, one of {'tree', 'chain'}
Encoding of n-ary relations used in the c-to-d conversion.
rew_pseudo_rels : boolean, defaults to False
If True, rewrite pseudo relations ; see
`educe.rst_dt.pseudo_relations`.
mrg_same_units : boolean, defaults to False
If True, merge fragmented EDUs ; see
`educe.rst_dt.pseudo_relations`.
Returns
-------
edu_df : pandas.DataFrame
Table of EDUs read from the corpus.
dep_df : pandas.DataFrame
Table of dependencies read from the corpus.
"""
# experimental: rewrite pseudo-relations
if rew_pseudo_rels:
for sec_name, sec_corpus in corpus.items():
corpus[sec_name] = {
doc_id: rewrite_pseudo_rels(doc_id, rst_ctree)
for doc_id, rst_ctree in sec_corpus.items()
}
if mrg_same_units:
for sec_name, sec_corpus in corpus.items():
corpus[sec_name] = {
doc_id: merge_same_units(doc_id, rst_ctree)
for doc_id, rst_ctree in sec_corpus.items()
}
# convert to d-trees, collect dependencies
edus = []
deps = []
for sec_name, sec_corpus in corpus.items():
for doc_id, rst_ctree in sorted(sec_corpus.items()):
doc_name = doc_id.doc
doc_text = rst_ctree.text()
# DIRTY infer (approximate) sentence and paragraph indices
# from newlines in the text (\n and \n\n)
sent_idx = 0
para_idx = 0
# end DIRTY
rst_dtree = RstDepTree.from_rst_tree(rst_ctree, nary_enc='chain')
for dep_idx, (edu, hd_idx, lbl, nuc, hd_order) in enumerate(
zip(rst_dtree.edus[1:], rst_dtree.heads[1:],
rst_dtree.labels[1:], rst_dtree.nucs[1:],
rst_dtree.ranks[1:]),
start=1):
char_beg = edu.span.char_start
char_end = edu.span.char_end
edus.append((sec_name, doc_name, dep_idx, char_beg, char_end,
sent_idx, para_idx))
deps.append((doc_name, dep_idx, hd_idx, lbl, nuc, hd_order))
# DIRTY search for paragraph or sentence breaks in the
# text of the EDU *plus the next three characters* (yerk)
edu_txt_plus = doc_text[char_beg:char_end + 3]
if '\n\n' in edu_txt_plus:
para_idx += 1
sent_idx += 1 # sometimes wrong ; to be fixed
elif '\n' in edu_txt_plus:
sent_idx += 1
# end DIRTY
# turn into DataFrame
edu_df = pd.DataFrame(edus,
columns=[
'section', 'doc_name', 'dep_idx', 'char_beg',
'char_end', 'sent_idx', 'para_idx'
])
dep_df = pd.DataFrame(
deps,
columns=['doc_name', 'dep_idx', 'hd_idx', 'rel', 'nuc', 'hd_order'])
# additional columns
# * attachment length in EDUs
dep_df['len_edu'] = dep_df['dep_idx'] - dep_df['hd_idx']
dep_df['len_edu_abs'] = abs(dep_df['len_edu'])
# * attachment length, in sentences and paragraphs
if False:
# TODO rewrite in a pandas-ic manner ; my previous attempts have
# failed but I think I got pretty close
# NB: the current implementation is *extremely* slow: 155 seconds
# on my laptop for the RST-DT, just for this (minor) computation
len_sent = []
len_para = []
for _, row in dep_df[['doc_name', 'dep_idx', 'hd_idx']].iterrows():
edu_dep = edu_df[(edu_df['doc_name'] == row['doc_name'])
& (edu_df['dep_idx'] == row['dep_idx'])]
if row['hd_idx'] == 0:
# {sent,para}_idx + 1 for dependents of the fake root
lsent = edu_dep['sent_idx'].values[0] + 1
lpara = edu_dep['para_idx'].values[0] + 1
else:
edu_hd = edu_df[(edu_df['doc_name'] == row['doc_name'])
& (edu_df['dep_idx'] == row['hd_idx'])]
lsent = (edu_dep['sent_idx'].values[0] -
edu_hd['sent_idx'].values[0])
lpara = (edu_dep['para_idx'].values[0] -
edu_hd['para_idx'].values[0])
len_sent.append(lsent)
len_para.append(lpara)
dep_df['len_sent'] = pd.Series(len_sent)
dep_df['len_sent_abs'] = abs(dep_df['len_sent'])
dep_df['len_para'] = pd.Series(len_para)
dep_df['len_para_abs'] = abs(dep_df['len_para'])
# * class of relation (FIXME we need to handle interaction with
# rewrite_pseudo_rels)
rel_conv = RstRelationConverter(RELMAP_112_18_FILE).convert_label
dep_df['rel_class'] = dep_df['rel'].apply(rel_conv)
# * boolean indicator for pseudo-relations ; NB: the 'Style-' prefix
# can only apply if rew_pseudo_rels (otherwise no occurrence)
dep_df['pseudo_rel'] = (
(dep_df['rel'].str.startswith('Style')) |
(dep_df['rel'].str.endswith('Same-Unit')) |
(dep_df['rel'].str.endswith('TextualOrganization')))
return edu_df, dep_df
doc_name + '.out.xml')
core_reader = PreprocessingSource()
core_reader.read(core_fname, suffix='')
corenlp_doc = read_corenlp_result(None, core_reader)
core_toks = corenlp_doc.tokens
core_toks_beg = [x.span.char_start for x in core_toks]
core_toks_end = [x.span.char_end for x in core_toks]
# PTB stuff
# * create DocumentPlus (adapted from educe.rst_dt.corpus)
rst_context = rst_tree.label().context
ptb_docp = DocumentPlus(key, doc_name, rst_context)
# * attach EDUs (yerk)
# FIXME we currently get them via an RstDepTree created from
# the original RSTTree, so as to get the left padding EDU
rst_dtree = RstDepTree.from_rst_tree(rst_tree)
ptb_docp.edus = rst_dtree.edus
# * setup a PtbParser (re-yerk)
ptb_parser = PtbParser(PTB_DIR)
ptb_parser.tokenize(ptb_docp)
# get PTB toks ; skip left padding token
ptb_toks = ptb_docp.tkd_tokens[1:]
ptb_toks_beg = ptb_docp.toks_beg[1:]
ptb_toks_end = ptb_docp.toks_end[1:]
# compare !
core2ptb_beg = np.searchsorted(ptb_toks_beg, core_toks_beg,
side='left')
core2ptb_end = np.searchsorted(ptb_toks_end, core_toks_end,
side='right') - 1
# TODO maybe use np.diff?
doc_name + '.out.xml')
core_reader = PreprocessingSource()
core_reader.read(core_fname, suffix='')
corenlp_doc = read_corenlp_result(None, core_reader)
core_toks = corenlp_doc.tokens
core_toks_beg = [x.span.char_start for x in core_toks]
core_toks_end = [x.span.char_end for x in core_toks]
# PTB stuff
# * create DocumentPlus (adapted from educe.rst_dt.corpus)
rst_context = rst_tree.label().context
ptb_docp = DocumentPlus(key, doc_name, rst_context)
# * attach EDUs (yerk)
# FIXME we currently get them via an RstDepTree created from
# the original RSTTree, so as to get the left padding EDU
rst_dtree = RstDepTree.from_rst_tree(rst_tree)
ptb_docp.edus = rst_dtree.edus
# * setup a PtbParser (re-yerk)
ptb_parser = PtbParser(PTB_DIR)
ptb_parser.tokenize(ptb_docp)
# get PTB toks ; skip left padding token
ptb_toks = ptb_docp.tkd_tokens[1:]
ptb_toks_beg = ptb_docp.toks_beg[1:]
ptb_toks_end = ptb_docp.toks_end[1:]
# compare !
core2ptb_beg = np.searchsorted(ptb_toks_beg,
core_toks_beg,
side='left')
core2ptb_end = np.searchsorted(
ptb_toks_end, core_toks_end, side='right') - 1
def read_deps(corpus, section='all', nary_enc='chain',
rew_pseudo_rels=False, mrg_same_units=False):
"""Collect dependencies from the corpus.
Parameters
----------
corpus : dict from str to dict from FileId to RSTTree
Corpus of RST c-trees indexed by {'train', 'test'} then FileId.
section : str, one of {'train', 'test', 'all'}
Section of interest in the RST-DT.
nary_enc : str, one of {'tree', 'chain'}
Encoding of n-ary relations used in the c-to-d conversion.
rew_pseudo_rels : boolean, defaults to False
If True, rewrite pseudo relations ; see
`educe.rst_dt.pseudo_relations`.
mrg_same_units : boolean, defaults to False
If True, merge fragmented EDUs ; see
`educe.rst_dt.pseudo_relations`.
Returns
-------
edu_df : pandas.DataFrame
Table of EDUs read from the corpus.
dep_df : pandas.DataFrame
Table of dependencies read from the corpus.
"""
# experimental: rewrite pseudo-relations
if rew_pseudo_rels:
for sec_name, sec_corpus in corpus.items():
corpus[sec_name] = {
doc_id: rewrite_pseudo_rels(doc_id, rst_ctree)
for doc_id, rst_ctree in sec_corpus.items()
}
if mrg_same_units:
for sec_name, sec_corpus in corpus.items():
corpus[sec_name] = {
doc_id: merge_same_units(doc_id, rst_ctree)
for doc_id, rst_ctree in sec_corpus.items()
}
# convert to d-trees, collect dependencies
edus = []
deps = []
for sec_name, sec_corpus in corpus.items():
for doc_id, rst_ctree in sorted(sec_corpus.items()):
doc_name = doc_id.doc
doc_text = rst_ctree.text()
# DIRTY infer (approximate) sentence and paragraph indices
# from newlines in the text (\n and \n\n)
sent_idx = 0
para_idx = 0
# end DIRTY
rst_dtree = RstDepTree.from_rst_tree(rst_ctree, nary_enc='chain')
for dep_idx, (edu, hd_idx, lbl, nuc, hd_order) in enumerate(
zip(rst_dtree.edus[1:],
rst_dtree.heads[1:], rst_dtree.labels[1:],
rst_dtree.nucs[1:], rst_dtree.ranks[1:]),
start=1):
char_beg = edu.span.char_start
char_end = edu.span.char_end
edus.append(
(sec_name, doc_name,
dep_idx, char_beg, char_end, sent_idx, para_idx)
)
deps.append(
(doc_name,
dep_idx, hd_idx, lbl, nuc, hd_order)
)
# DIRTY search for paragraph or sentence breaks in the
# text of the EDU *plus the next three characters* (yerk)
edu_txt_plus = doc_text[char_beg:char_end + 3]
if '\n\n' in edu_txt_plus:
para_idx += 1
sent_idx += 1 # sometimes wrong ; to be fixed
elif '\n' in edu_txt_plus:
sent_idx += 1
# end DIRTY
# turn into DataFrame
edu_df = pd.DataFrame(edus, columns=[
'section', 'doc_name', 'dep_idx', 'char_beg', 'char_end',
'sent_idx', 'para_idx']
)
dep_df = pd.DataFrame(deps, columns=[
'doc_name', 'dep_idx',
'hd_idx', 'rel', 'nuc', 'hd_order']
)
# additional columns
# * attachment length in EDUs
dep_df['len_edu'] = dep_df['dep_idx'] - dep_df['hd_idx']
dep_df['len_edu_abs'] = abs(dep_df['len_edu'])
# * attachment length, in sentences and paragraphs
if False:
# TODO rewrite in a pandas-ic manner ; my previous attempts have
# failed but I think I got pretty close
# NB: the current implementation is *extremely* slow: 155 seconds
# on my laptop for the RST-DT, just for this (minor) computation
len_sent = []
len_para = []
for _, row in dep_df[['doc_name', 'dep_idx', 'hd_idx']].iterrows():
edu_dep = edu_df[
(edu_df['doc_name'] == row['doc_name']) &
(edu_df['dep_idx'] == row['dep_idx'])
]
if row['hd_idx'] == 0:
# {sent,para}_idx + 1 for dependents of the fake root
lsent = edu_dep['sent_idx'].values[0] + 1
lpara = edu_dep['para_idx'].values[0] + 1
else:
edu_hd = edu_df[
(edu_df['doc_name'] == row['doc_name']) &
(edu_df['dep_idx'] == row['hd_idx'])
]
lsent = (edu_dep['sent_idx'].values[0] -
edu_hd['sent_idx'].values[0])
lpara = (edu_dep['para_idx'].values[0] -
edu_hd['para_idx'].values[0])
len_sent.append(lsent)
len_para.append(lpara)
dep_df['len_sent'] = pd.Series(len_sent)
dep_df['len_sent_abs'] = abs(dep_df['len_sent'])
dep_df['len_para'] = pd.Series(len_para)
dep_df['len_para_abs'] = abs(dep_df['len_para'])
# * class of relation (FIXME we need to handle interaction with
# rewrite_pseudo_rels)
rel_conv = RstRelationConverter(RELMAP_112_18_FILE).convert_label
dep_df['rel_class'] = dep_df['rel'].apply(rel_conv)
# * boolean indicator for pseudo-relations ; NB: the 'Style-' prefix
# can only apply if rew_pseudo_rels (otherwise no occurrence)
dep_df['pseudo_rel'] = (
(dep_df['rel'].str.startswith('Style')) |
(dep_df['rel'].str.endswith('Same-Unit')) |
(dep_df['rel'].str.endswith('TextualOrganization'))
)
return edu_df, dep_df
