mirror of
https://github.com/explosion/spaCy.git
synced 2024-11-11 12:18:04 +03:00
102 lines
3.4 KiB
Cython
102 lines
3.4 KiB
Cython
from cymem.cymem cimport Pool
|
|
from thinc.typedefs cimport weight_t
|
|
from collections import defaultdict
|
|
|
|
from ..structs cimport TokenC
|
|
from .stateclass cimport StateClass
|
|
from ..attrs cimport TAG, HEAD, DEP, ENT_TYPE, ENT_IOB
|
|
|
|
|
|
cdef weight_t MIN_SCORE = -90000
|
|
|
|
|
|
class OracleError(Exception):
|
|
pass
|
|
|
|
|
|
cdef class TransitionSystem:
|
|
def __init__(self, StringStore string_table, dict labels_by_action, _freqs=None):
|
|
self.mem = Pool()
|
|
self.strings = string_table
|
|
self.n_moves = 0
|
|
self._size = 100
|
|
|
|
self.c = <Transition*>self.mem.alloc(self._size, sizeof(Transition))
|
|
|
|
for action, label_strs in sorted(labels_by_action.items()):
|
|
for label_str in sorted(label_strs):
|
|
self.add_action(int(action), label_str)
|
|
|
|
self.root_label = self.strings['ROOT']
|
|
self.freqs = {} if _freqs is None else _freqs
|
|
for attr in (TAG, HEAD, DEP, ENT_TYPE, ENT_IOB):
|
|
self.freqs[attr] = defaultdict(int)
|
|
self.freqs[attr][0] = 1
|
|
# Ensure we've seen heads. Need an official dependency length limit...
|
|
for i in range(10024):
|
|
self.freqs[HEAD][i] = 1
|
|
self.freqs[HEAD][-i] = 1
|
|
|
|
def __reduce__(self):
|
|
labels_by_action = {}
|
|
cdef Transition t
|
|
for trans in self.c[:self.n_moves]:
|
|
label_str = self.strings[trans.label]
|
|
labels_by_action.setdefault(trans.move, []).append(label_str)
|
|
return (self.__class__,
|
|
(self.strings, labels_by_action, self.freqs),
|
|
None, None)
|
|
|
|
cdef int initialize_state(self, StateC* state) nogil:
|
|
pass
|
|
|
|
cdef int finalize_state(self, StateC* state) nogil:
|
|
pass
|
|
|
|
def finalize_doc(self, doc):
|
|
pass
|
|
|
|
cdef int preprocess_gold(self, GoldParse gold) except -1:
|
|
raise NotImplementedError
|
|
|
|
cdef Transition lookup_transition(self, object name) except *:
|
|
raise NotImplementedError
|
|
|
|
cdef Transition init_transition(self, int clas, int move, int label) except *:
|
|
raise NotImplementedError
|
|
|
|
def is_valid(self, StateClass stcls, move_name):
|
|
action = self.lookup_transition(move_name)
|
|
return action.is_valid(stcls.c, action.label)
|
|
|
|
cdef int set_valid(self, int* is_valid, const StateC* st) nogil:
|
|
cdef int i
|
|
for i in range(self.n_moves):
|
|
is_valid[i] = self.c[i].is_valid(st, self.c[i].label)
|
|
|
|
cdef int set_costs(self, int* is_valid, weight_t* costs,
|
|
StateClass stcls, GoldParse gold) except -1:
|
|
cdef int i
|
|
self.set_valid(is_valid, stcls.c)
|
|
for i in range(self.n_moves):
|
|
if is_valid[i]:
|
|
costs[i] = self.c[i].get_cost(stcls, &gold.c, self.c[i].label)
|
|
else:
|
|
costs[i] = 9000
|
|
|
|
def add_action(self, int action, label):
|
|
if not isinstance(label, int):
|
|
label = self.strings[label]
|
|
# Check we're not creating a move we already have, so that this is
|
|
# idempotent
|
|
for trans in self.c[:self.n_moves]:
|
|
if trans.move == action and trans.label == label:
|
|
return 0
|
|
if self.n_moves >= self._size:
|
|
self._size *= 2
|
|
self.c = <Transition*>self.mem.realloc(self.c, self._size * sizeof(self.c[0]))
|
|
|
|
self.c[self.n_moves] = self.init_transition(self.n_moves, action, label)
|
|
self.n_moves += 1
|
|
return 1
|