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73 lines
2.5 KiB
Cython
73 lines
2.5 KiB
Cython
from cymem.cymem cimport Pool
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from ..structs cimport TokenC
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from thinc.typedefs cimport weight_t
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from .stateclass cimport StateClass
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cdef weight_t MIN_SCORE = -90000
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class OracleError(Exception):
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pass
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cdef class TransitionSystem:
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def __init__(self, StringStore string_table, dict labels_by_action):
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self.mem = Pool()
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self.n_moves = sum(len(labels) for labels in labels_by_action.values())
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self._is_valid = <bint*>self.mem.alloc(self.n_moves, sizeof(bint))
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moves = <Transition*>self.mem.alloc(self.n_moves, sizeof(Transition))
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cdef int i = 0
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cdef int label_id
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self.strings = string_table
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for action, label_strs in sorted(labels_by_action.items()):
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for label_str in sorted(label_strs):
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label_id = self.strings[unicode(label_str)] if label_str else 0
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moves[i] = self.init_transition(i, int(action), label_id)
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i += 1
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self.c = moves
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cdef int initialize_state(self, StateClass state) except -1:
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pass
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cdef int finalize_state(self, StateClass state) except -1:
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pass
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cdef int preprocess_gold(self, GoldParse gold) except -1:
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raise NotImplementedError
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cdef Transition lookup_transition(self, object name) except *:
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raise NotImplementedError
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cdef Transition init_transition(self, int clas, int move, int label) except *:
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raise NotImplementedError
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cdef Transition best_valid(self, const weight_t* scores, StateClass s) except *:
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raise NotImplementedError
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cdef int set_valid(self, bint* output, StateClass state) except -1:
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raise NotImplementedError
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cdef int set_costs(self, int* output, StateClass stcls, GoldParse gold) except -1:
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cdef int i
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for i in range(self.n_moves):
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if self.c[i].is_valid(stcls, self.c[i].label):
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output[i] = self.c[i].get_cost(stcls, &gold.c, self.c[i].label)
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else:
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output[i] = 9000
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cdef Transition best_gold(self, const weight_t* scores, StateClass stcls,
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GoldParse gold) except *:
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cdef Transition best
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cdef weight_t score = MIN_SCORE
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cdef int i
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for i in range(self.n_moves):
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if self.c[i].is_valid(stcls, self.c[i].label):
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cost = self.c[i].get_cost(stcls, &gold.c, self.c[i].label)
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if scores[i] > score and cost == 0:
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best = self.c[i]
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score = scores[i]
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assert score > MIN_SCORE
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return best
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