/
revision.py
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/
revision.py
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import numpy as np
columns = ["ins_tokens", "del_tokens",
"ins_tokens_str", "del_tokens_str",
"left_neigh_slice", "right_neigh_slice",
"left_token", "right_token",
"left_token_str", "right_token_str"]
class Revision:
def __init__(self, id, timestamp, editor):
self.id = id
self.timestamp = timestamp
self.editor = editor
self.added = list()
self.removed = list()
def inserted_continuous_pos(self):
added = np.isin(self.tokens, self.added,
assume_unique=True).astype(np.int)
ediff = np.ediff1d(
np.pad(added, (1, 1), mode="constant", constant_values=0))
self.ins_start_pos = np.nonzero(ediff == 1)[0]
self.ins_end_pos = np.nonzero(ediff == -1)[0] - 1
self.start_token_id = self.tokens[self.ins_start_pos - 1]
self.end_token_id = self.tokens[self.ins_end_pos + 1]
def iter_chobs(self, page_id, to_rev, epsilon_size):
removed = np.isin(self.tokens,
to_rev.removed, assume_unique=True).astype(np.int)
ediff = np.ediff1d(
np.pad(removed, (1, 1), mode="constant", constant_values=0))
del_start_pos = np.nonzero(ediff == 1)[0]
del_end_pos = np.nonzero(ediff == -1)[0] - 1
del_left_neigh = del_start_pos - 1
del_right_neigh = del_end_pos + 1
ins_left_neigh = np.nonzero(
np.isin(self.tokens, to_rev.start_token_id, assume_unique=True))[0]
ins_right_neigh = np.nonzero(
np.isin(self.tokens, to_rev.end_token_id, assume_unique=True))[0]
did = 0
iid = 0
chdata = []
while iid < len(ins_left_neigh) and did < len(del_left_neigh):
if (ins_left_neigh[iid] == del_left_neigh[did] and
ins_right_neigh[iid] == del_right_neigh[did]):
isp = to_rev.ins_start_pos[iid]
iep = to_rev.ins_end_pos[iid]
ln = ins_left_neigh[iid]
rn = ins_right_neigh[iid]
dsp = del_start_pos[did]
dep = del_end_pos[did]
ins_slice = slice(isp, iep + 1)
del_slice = slice(dsp, dep + 1)
ln_slice = slice(max(0, ln - epsilon_size), ln + 1)
rn_slice = slice(
rn, min(rn + epsilon_size + 1, self.tokens.size - 1))
yield {
'page_id': page_id,
'from_rev': self.id,
'to_rev': to_rev.id,
'from_timestamp': to_rev.timestamp,
'to_timestamp': self.timestamp,
'editor': to_rev.editor,
'ins_start_pos': isp,
'ins_end_pos': iep,
'left_neigh': ln,
'right_neigh': rn,
'del_start_pos': dsp,
'del_end_pos': dep,
'ins_tokens_str': tuple(to_rev.values[ins_slice]),
'del_tokens_str': tuple(self.values[del_slice]),
'left_token_str': tuple(self.values[ln_slice]),
'right_token_str': tuple(self.values[rn_slice]),
'ins_tokens': to_rev.tokens[ins_slice].tolist(),
'del_tokens': self.tokens[del_slice].tolist(),
'left_token': self.tokens[ln_slice].tolist(),
'right_token': self.tokens[rn_slice].tolist(),
'text': (tuple(self.values[ln_slice]),
tuple(to_rev.values[ins_slice]),
tuple(self.values[del_slice]),
tuple(self.values[rn_slice])),
}
did += 1
iid += 1
elif (ins_left_neigh[iid] <= del_left_neigh[did]):
isp = to_rev.ins_start_pos[iid]
iep = to_rev.ins_end_pos[iid]
ln = ins_left_neigh[iid]
rn = ins_right_neigh[iid]
dsp = -1
dep = -1
ins_slice = slice(isp, iep + 1)
ln_slice = slice(max(0, ln - epsilon_size), ln + 1)
rn_slice = slice(
rn, min(rn + epsilon_size + 1, self.tokens.size - 1))
yield {
'page_id': page_id,
'from_rev': self.id,
'to_rev': to_rev.id,
'from_timestamp': to_rev.timestamp,
'to_timestamp': self.timestamp,
'editor': to_rev.editor,
'ins_start_pos': isp,
'ins_end_pos': iep,
'left_neigh': ln,
'right_neigh': rn,
'del_start_pos': dsp,
'del_end_pos': dep,
'ins_tokens_str': tuple(to_rev.values[ins_slice]),
'del_tokens_str': tuple(),
'left_token_str': tuple(self.values[ln_slice]),
'right_token_str': tuple(self.values[rn_slice]),
'ins_tokens': to_rev.tokens[ins_slice].tolist(),
'del_tokens': [],
'left_token': self.tokens[ln_slice].tolist(),
'right_token': self.tokens[rn_slice].tolist(),
'text': (tuple(self.values[ln_slice]),
tuple(to_rev.values[ins_slice]),
tuple(),
tuple(self.values[rn_slice])),
}
iid += 1
elif (ins_left_neigh[iid] > del_left_neigh[did]):
isp = -1
iep = -1
ln = del_left_neigh[did]
rn = del_right_neigh[did]
dsp = del_start_pos[did]
dep = del_end_pos[did]
del_slice = slice(dsp, dep + 1)
ln_slice = slice(max(0, ln - epsilon_size), ln + 1)
rn_slice = slice(
rn, min(rn + epsilon_size + 1, self.tokens.size - 1))
yield {
'page_id': page_id,
'from_rev': self.id,
'to_rev': to_rev.id,
'from_timestamp': to_rev.timestamp,
'to_timestamp': self.timestamp,
'editor': to_rev.editor,
'ins_start_pos': isp,
'ins_end_pos': iep,
'left_neigh': ln,
'right_neigh': rn,
'del_start_pos': dsp,
'del_end_pos': dep,
'ins_tokens_str': tuple(),
'del_tokens_str': tuple(self.values[del_slice]),
'left_token_str': tuple(self.values[ln_slice]),
'right_token_str': tuple(self.values[rn_slice]),
'ins_tokens': [],
'del_tokens': self.tokens[del_slice].tolist(),
'left_token': self.tokens[ln_slice].tolist(),
'right_token': self.tokens[rn_slice].tolist(),
'text': (tuple(self.values[ln_slice]),
tuple(),
tuple(self.values[del_slice]),
tuple(self.values[rn_slice])),
}
did += 1
# if there is left over inserted tokens
while iid < len(ins_left_neigh):
isp = to_rev.ins_start_pos[iid]
iep = to_rev.ins_end_pos[iid]
ln = ins_left_neigh[iid]
rn = ins_right_neigh[iid]
dsp = -1
dep = -1
ins_slice = slice(isp, iep + 1)
ln_slice = slice(max(0, ln - epsilon_size), ln + 1)
rn_slice = slice(
rn, min(rn + epsilon_size + 1, self.tokens.size - 1))
yield {
'page_id': page_id,
'from_rev': self.id,
'to_rev': to_rev.id,
'from_timestamp': to_rev.timestamp,
'to_timestamp': self.timestamp,
'editor': to_rev.editor,
'ins_start_pos': isp,
'ins_end_pos': iep,
'left_neigh': ln,
'right_neigh': rn,
'del_start_pos': dsp,
'del_end_pos': dep,
'ins_tokens_str': tuple(to_rev.values[ins_slice]),
'del_tokens_str': tuple(),
'left_token_str': tuple(self.values[ln_slice]),
'right_token_str': tuple(self.values[rn_slice]),
'ins_tokens': to_rev.tokens[ins_slice].tolist(),
'del_tokens': [],
'left_token': self.tokens[ln_slice].tolist(),
'right_token': self.tokens[rn_slice].tolist(),
'text': (tuple(self.values[ln_slice]),
tuple(to_rev.values[ins_slice]),
tuple(),
tuple(self.values[rn_slice])),
}
iid += 1
# if there is left over deleted tokens
while did < len(del_left_neigh):
isp = -1
iep = -1
ln = del_left_neigh[did]
rn = del_right_neigh[did]
dsp = del_start_pos[did]
dep = del_end_pos[did]
del_slice = slice(dsp, dep + 1)
ln_slice = slice(max(0, ln - epsilon_size), ln + 1)
rn_slice = slice(
rn, min(rn + epsilon_size + 1, self.tokens.size - 1))
yield {
'page_id': page_id,
'from_rev': self.id,
'to_rev': to_rev.id,
'from_timestamp': to_rev.timestamp,
'to_timestamp': self.timestamp,
'editor': to_rev.editor,
'ins_start_pos': isp,
'ins_end_pos': iep,
'left_neigh': ln,
'right_neigh': rn,
'del_start_pos': dsp,
'del_end_pos': dep,
'ins_tokens_str': tuple(),
'del_tokens_str': tuple(self.values[del_slice]),
'left_token_str': tuple(self.values[ln_slice]),
'right_token_str': tuple(self.values[rn_slice]),
'ins_tokens': [],
'del_tokens': self.tokens[del_slice].tolist(),
'left_token': self.tokens[ln_slice].tolist(),
'right_token': self.tokens[rn_slice].tolist(),
'text': (tuple(self.values[ln_slice]),
tuple(),
tuple(self.values[del_slice]),
tuple(self.values[rn_slice])),
}
did += 1