mirror of https://github.com/explosion/spaCy.git
809 lines
27 KiB
Cython
809 lines
27 KiB
Cython
# cython: profile=True, cdivision=True, infer_types=True
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from cymem.cymem cimport Pool, Address
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from libc.stdint cimport int32_t
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from collections import defaultdict, Counter
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from ...typedefs cimport hash_t, attr_t
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from ...strings cimport hash_string
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from ...structs cimport TokenC
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from ...tokens.doc cimport Doc, set_children_from_heads
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from ...gold.example cimport Example
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from ...errors import Errors
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from .stateclass cimport StateClass
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from ._state cimport StateC
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# Calculate cost as gold/not gold. We don't use scalar value anyway.
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cdef int BINARY_COSTS = 1
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cdef weight_t MIN_SCORE = -90000
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cdef attr_t SUBTOK_LABEL = hash_string(u'subtok')
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DEF NON_MONOTONIC = True
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DEF USE_BREAK = True
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# Break transition from here
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# http://www.aclweb.org/anthology/P13-1074
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cdef enum:
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SHIFT
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REDUCE
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LEFT
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RIGHT
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BREAK
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N_MOVES
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MOVE_NAMES = [None] * N_MOVES
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MOVE_NAMES[SHIFT] = 'S'
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MOVE_NAMES[REDUCE] = 'D'
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MOVE_NAMES[LEFT] = 'L'
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MOVE_NAMES[RIGHT] = 'R'
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MOVE_NAMES[BREAK] = 'B'
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cdef enum:
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HEAD_IN_STACK = 0
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HEAD_IN_BUFFER
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HEAD_UNKNOWN
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IS_SENT_START
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SENT_START_UNKNOWN
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cdef struct GoldParseStateC:
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char* state_bits
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int32_t* n_kids_in_buffer
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int32_t* n_kids_in_stack
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int32_t* heads
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attr_t* labels
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int32_t** kids
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int32_t* n_kids
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int32_t length
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int32_t stride
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cdef GoldParseStateC create_gold_state(Pool mem, StateClass stcls,
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heads, labels, sent_starts) except *:
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cdef GoldParseStateC gs
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gs.length = len(heads)
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gs.stride = 1
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gs.labels = <attr_t*>mem.alloc(gs.length, sizeof(gs.labels[0]))
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gs.heads = <int32_t*>mem.alloc(gs.length, sizeof(gs.heads[0]))
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gs.n_kids = <int32_t*>mem.alloc(gs.length, sizeof(gs.n_kids[0]))
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gs.state_bits = <char*>mem.alloc(gs.length, sizeof(gs.state_bits[0]))
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gs.n_kids_in_buffer = <int32_t*>mem.alloc(gs.length, sizeof(gs.n_kids_in_buffer[0]))
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gs.n_kids_in_stack = <int32_t*>mem.alloc(gs.length, sizeof(gs.n_kids_in_stack[0]))
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for i, is_sent_start in enumerate(sent_starts):
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if is_sent_start == True:
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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IS_SENT_START,
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1
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)
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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SENT_START_UNKNOWN,
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0
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)
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elif is_sent_start is None:
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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SENT_START_UNKNOWN,
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1
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)
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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IS_SENT_START,
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0
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)
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else:
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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SENT_START_UNKNOWN,
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0
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)
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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IS_SENT_START,
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0
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)
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for i, (head, label) in enumerate(zip(heads, labels)):
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if head is not None:
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gs.heads[i] = head
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gs.labels[i] = label
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if i != head:
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gs.n_kids[head] += 1
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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HEAD_UNKNOWN,
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0
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)
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else:
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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HEAD_UNKNOWN,
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1
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)
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# Make an array of pointers, pointing into the gs_kids_flat array.
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gs.kids = <int32_t**>mem.alloc(gs.length, sizeof(int32_t*))
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for i in range(gs.length):
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if gs.n_kids[i] != 0:
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gs.kids[i] = <int32_t*>mem.alloc(gs.n_kids[i], sizeof(int32_t))
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# This is a temporary buffer
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js_addr = Address(gs.length, sizeof(int32_t))
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js = <int32_t*>js_addr.ptr
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for i in range(gs.length):
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if not is_head_unknown(&gs, i):
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head = gs.heads[i]
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if head != i:
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gs.kids[head][js[head]] = i
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js[head] += 1
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return gs
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cdef void update_gold_state(GoldParseStateC* gs, StateClass stcls) nogil:
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for i in range(gs.length):
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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HEAD_IN_BUFFER,
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0
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)
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gs.state_bits[i] = set_state_flag(
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gs.state_bits[i],
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HEAD_IN_STACK,
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0
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)
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gs.n_kids_in_stack[i] = 0
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gs.n_kids_in_buffer[i] = 0
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for i in range(stcls.stack_depth()):
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s_i = stcls.S(i)
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if not is_head_unknown(gs, s_i):
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gs.n_kids_in_stack[gs.heads[s_i]] += 1
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for kid in gs.kids[s_i][:gs.n_kids[s_i]]:
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gs.state_bits[kid] = set_state_flag(
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gs.state_bits[kid],
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HEAD_IN_STACK,
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1
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)
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for i in range(stcls.buffer_length()):
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b_i = stcls.B(i)
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if not is_head_unknown(gs, b_i):
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gs.n_kids_in_buffer[gs.heads[b_i]] += 1
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for kid in gs.kids[b_i][:gs.n_kids[b_i]]:
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gs.state_bits[kid] = set_state_flag(
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gs.state_bits[kid],
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HEAD_IN_BUFFER,
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1
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)
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cdef class ArcEagerGold:
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cdef GoldParseStateC c
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cdef Pool mem
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def __init__(self, ArcEager moves, StateClass stcls, Example example):
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self.mem = Pool()
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heads, labels = example.get_aligned_parse(projectivize=True)
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labels = [label if label is not None else "" for label in labels]
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labels = [example.x.vocab.strings.add(label) for label in labels]
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sent_starts = example.get_aligned("SENT_START")
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assert len(heads) == len(labels) == len(sent_starts)
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self.c = create_gold_state(self.mem, stcls, heads, labels, sent_starts)
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def update(self, StateClass stcls):
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update_gold_state(&self.c, stcls)
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cdef int check_state_gold(char state_bits, char flag) nogil:
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cdef char one = 1
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return state_bits & (one << flag)
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cdef int set_state_flag(char state_bits, char flag, int value) nogil:
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cdef char one = 1
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if value:
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return state_bits | (one << flag)
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else:
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return state_bits & ~(one << flag)
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cdef int is_head_in_stack(const GoldParseStateC* gold, int i) nogil:
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return check_state_gold(gold.state_bits[i], HEAD_IN_STACK)
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cdef int is_head_in_buffer(const GoldParseStateC* gold, int i) nogil:
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return check_state_gold(gold.state_bits[i], HEAD_IN_BUFFER)
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cdef int is_head_unknown(const GoldParseStateC* gold, int i) nogil:
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return check_state_gold(gold.state_bits[i], HEAD_UNKNOWN)
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cdef int is_sent_start(const GoldParseStateC* gold, int i) nogil:
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return check_state_gold(gold.state_bits[i], IS_SENT_START)
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cdef int is_sent_start_unknown(const GoldParseStateC* gold, int i) nogil:
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return check_state_gold(gold.state_bits[i], SENT_START_UNKNOWN)
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# Helper functions for the arc-eager oracle
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cdef weight_t push_cost(StateClass stcls, const void* _gold, int target) nogil:
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gold = <const GoldParseStateC*>_gold
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cdef weight_t cost = 0
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if is_head_in_stack(gold, target):
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cost += 1
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cost += gold.n_kids_in_stack[target]
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if Break.is_valid(stcls.c, 0) and Break.move_cost(stcls, gold) == 0:
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cost += 1
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return cost
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cdef weight_t pop_cost(StateClass stcls, const void* _gold, int target) nogil:
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gold = <const GoldParseStateC*>_gold
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cdef weight_t cost = 0
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if is_head_in_buffer(gold, target):
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cost += 1
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cost += gold[0].n_kids_in_buffer[target]
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if Break.is_valid(stcls.c, 0) and Break.move_cost(stcls, gold) == 0:
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cost += 1
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return cost
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cdef weight_t arc_cost(StateClass stcls, const void* _gold, int head, int child) nogil:
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gold = <const GoldParseStateC*>_gold
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if arc_is_gold(gold, head, child):
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return 0
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elif stcls.H(child) == gold.heads[child]:
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return 1
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# Head in buffer
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elif is_head_in_buffer(gold, child):
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return 1
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else:
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return 0
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cdef bint arc_is_gold(const GoldParseStateC* gold, int head, int child) nogil:
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if is_head_unknown(gold, child):
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return True
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elif gold.heads[child] == head:
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return True
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else:
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return False
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cdef bint label_is_gold(const GoldParseStateC* gold, int head, int child, attr_t label) nogil:
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if is_head_unknown(gold, child):
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return True
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elif label == 0:
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return True
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elif gold.labels[child] == label:
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return True
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else:
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return False
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cdef bint _is_gold_root(const GoldParseStateC* gold, int word) nogil:
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return gold.heads[word] == word or is_head_unknown(gold, word)
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cdef class Shift:
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@staticmethod
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cdef bint is_valid(const StateC* st, attr_t label) nogil:
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sent_start = st._sent[st.B_(0).l_edge].sent_start
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return st.buffer_length() >= 2 and not st.shifted[st.B(0)] and sent_start != 1
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@staticmethod
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cdef int transition(StateC* st, attr_t label) nogil:
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st.push()
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st.fast_forward()
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@staticmethod
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cdef weight_t cost(StateClass st, const void* _gold, attr_t label) nogil:
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gold = <const GoldParseStateC*>_gold
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return Shift.move_cost(st, gold) + Shift.label_cost(st, gold, label)
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@staticmethod
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cdef inline weight_t move_cost(StateClass s, const void* _gold) nogil:
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gold = <const GoldParseStateC*>_gold
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return push_cost(s, gold, s.B(0))
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@staticmethod
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cdef inline weight_t label_cost(StateClass s, const void* _gold, attr_t label) nogil:
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return 0
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cdef class Reduce:
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@staticmethod
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cdef bint is_valid(const StateC* st, attr_t label) nogil:
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return st.stack_depth() >= 2
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@staticmethod
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cdef int transition(StateC* st, attr_t label) nogil:
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if st.has_head(st.S(0)):
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st.pop()
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else:
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st.unshift()
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st.fast_forward()
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@staticmethod
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cdef weight_t cost(StateClass s, const void* _gold, attr_t label) nogil:
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gold = <const GoldParseStateC*>_gold
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return Reduce.move_cost(s, gold) + Reduce.label_cost(s, gold, label)
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@staticmethod
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cdef inline weight_t move_cost(StateClass st, const void* _gold) nogil:
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gold = <const GoldParseStateC*>_gold
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s0 = st.S(0)
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cost = pop_cost(st, gold, s0)
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return_to_buffer = not st.has_head(s0)
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if return_to_buffer:
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# Decrement cost for the arcs we save, as we'll be putting this
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# back to the buffer
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if is_head_in_stack(gold, s0):
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cost -= 1
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cost -= gold.n_kids_in_stack[s0]
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if Break.is_valid(st.c, 0) and Break.move_cost(st, gold) == 0:
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cost -= 1
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return cost
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@staticmethod
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cdef inline weight_t label_cost(StateClass s, const void* gold, attr_t label) nogil:
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return 0
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cdef class LeftArc:
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@staticmethod
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cdef bint is_valid(const StateC* st, attr_t label) nogil:
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if label == SUBTOK_LABEL and st.S(0) != (st.B(0)-1):
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return 0
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sent_start = st._sent[st.B_(0).l_edge].sent_start
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return sent_start != 1
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@staticmethod
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cdef int transition(StateC* st, attr_t label) nogil:
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st.add_arc(st.B(0), st.S(0), label)
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st.pop()
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st.fast_forward()
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@staticmethod
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cdef inline weight_t cost(StateClass s, const void* _gold, attr_t label) nogil:
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gold = <const GoldParseStateC*>_gold
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return LeftArc.move_cost(s, gold) + LeftArc.label_cost(s, gold, label)
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@staticmethod
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cdef inline weight_t move_cost(StateClass s, const GoldParseStateC* gold) nogil:
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cdef weight_t cost = 0
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s0 = s.S(0)
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b0 = s.B(0)
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if arc_is_gold(gold, b0, s0):
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# Have a negative cost if we 'recover' from the wrong dependency
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return 0 if not s.has_head(s0) else -1
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else:
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# Account for deps we might lose between S0 and stack
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if not s.has_head(s0):
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cost += gold.n_kids_in_stack[s0]
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if is_head_in_buffer(gold, s0):
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cost += 1
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return cost + pop_cost(s, gold, s.S(0)) + arc_cost(s, gold, s.B(0), s.S(0))
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@staticmethod
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cdef inline weight_t label_cost(StateClass s, const GoldParseStateC* gold, attr_t label) nogil:
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return arc_is_gold(gold, s.B(0), s.S(0)) and not label_is_gold(gold, s.B(0), s.S(0), label)
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cdef class RightArc:
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@staticmethod
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cdef bint is_valid(const StateC* st, attr_t label) nogil:
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# If there's (perhaps partial) parse pre-set, don't allow cycle.
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if label == SUBTOK_LABEL and st.S(0) != (st.B(0)-1):
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return 0
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sent_start = st._sent[st.B_(0).l_edge].sent_start
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return sent_start != 1 and st.H(st.S(0)) != st.B(0)
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@staticmethod
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cdef int transition(StateC* st, attr_t label) nogil:
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st.add_arc(st.S(0), st.B(0), label)
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st.push()
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st.fast_forward()
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@staticmethod
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cdef inline weight_t cost(StateClass s, const void* _gold, attr_t label) nogil:
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gold = <const GoldParseStateC*>_gold
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return RightArc.move_cost(s, gold) + RightArc.label_cost(s, gold, label)
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@staticmethod
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cdef inline weight_t move_cost(StateClass s, const void* _gold) nogil:
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gold = <const GoldParseStateC*>_gold
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if arc_is_gold(gold, s.S(0), s.B(0)):
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return 0
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elif s.c.shifted[s.B(0)]:
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return push_cost(s, gold, s.B(0))
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else:
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return push_cost(s, gold, s.B(0)) + arc_cost(s, gold, s.S(0), s.B(0))
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@staticmethod
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cdef weight_t label_cost(StateClass s, const void* _gold, attr_t label) nogil:
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gold = <const GoldParseStateC*>_gold
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return arc_is_gold(gold, s.S(0), s.B(0)) and not label_is_gold(gold, s.S(0), s.B(0), label)
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cdef class Break:
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@staticmethod
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cdef bint is_valid(const StateC* st, attr_t label) nogil:
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cdef int i
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if not USE_BREAK:
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return False
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elif st.at_break():
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return False
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elif st.stack_depth() < 1:
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return False
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elif st.B_(0).l_edge < 0:
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return False
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elif st._sent[st.B_(0).l_edge].sent_start < 0:
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return False
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else:
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return True
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@staticmethod
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cdef int transition(StateC* st, attr_t label) nogil:
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st.set_break(st.B_(0).l_edge)
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st.fast_forward()
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@staticmethod
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cdef weight_t cost(StateClass s, const void* _gold, attr_t label) nogil:
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gold = <const GoldParseStateC*>_gold
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return Break.move_cost(s, gold) + Break.label_cost(s, gold, label)
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@staticmethod
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cdef inline weight_t move_cost(StateClass s, const void* _gold) nogil:
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gold = <const GoldParseStateC*>_gold
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cost = 0
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for i in range(s.stack_depth()):
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S_i = s.S(i)
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cost += gold.n_kids_in_buffer[S_i]
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if is_head_in_buffer(gold, S_i):
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cost += 1
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# It's weird not to check the gold sentence boundaries but if we do,
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# we can't account for "sunk costs", i.e. situations where we're already
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# wrong.
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s0_root = _get_root(s.S(0), gold)
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b0_root = _get_root(s.B(0), gold)
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if s0_root != b0_root or s0_root == -1 or b0_root == -1:
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return cost
|
|
else:
|
|
return cost + 1
|
|
|
|
@staticmethod
|
|
cdef inline weight_t label_cost(StateClass s, const void* gold, attr_t label) nogil:
|
|
return 0
|
|
|
|
cdef int _get_root(int word, const GoldParseStateC* gold) nogil:
|
|
if is_head_unknown(gold, word):
|
|
return -1
|
|
while gold.heads[word] != word and word >= 0:
|
|
word = gold.heads[word]
|
|
if is_head_unknown(gold, word):
|
|
return -1
|
|
else:
|
|
return word
|
|
|
|
|
|
cdef void* _init_state(Pool mem, int length, void* tokens) except NULL:
|
|
st = new StateC(<const TokenC*>tokens, length)
|
|
for i in range(st.length):
|
|
if st._sent[i].dep == 0:
|
|
st._sent[i].l_edge = i
|
|
st._sent[i].r_edge = i
|
|
st._sent[i].head = 0
|
|
st._sent[i].dep = 0
|
|
st._sent[i].l_kids = 0
|
|
st._sent[i].r_kids = 0
|
|
st.fast_forward()
|
|
return <void*>st
|
|
|
|
|
|
cdef int _del_state(Pool mem, void* state, void* x) except -1:
|
|
cdef StateC* st = <StateC*>state
|
|
del st
|
|
|
|
|
|
cdef class ArcEager(TransitionSystem):
|
|
def __init__(self, *args, **kwargs):
|
|
TransitionSystem.__init__(self, *args, **kwargs)
|
|
|
|
@classmethod
|
|
def get_actions(cls, **kwargs):
|
|
min_freq = kwargs.get('min_freq', None)
|
|
actions = defaultdict(lambda: Counter())
|
|
actions[SHIFT][''] = 1
|
|
actions[REDUCE][''] = 1
|
|
for label in kwargs.get('left_labels', []):
|
|
actions[LEFT][label] = 1
|
|
actions[SHIFT][label] = 1
|
|
for label in kwargs.get('right_labels', []):
|
|
actions[RIGHT][label] = 1
|
|
actions[REDUCE][label] = 1
|
|
for example in kwargs.get('examples', []):
|
|
heads, labels = example.get_aligned_parse(projectivize=True)
|
|
for child, (head, label) in enumerate(zip(heads, labels)):
|
|
if head is None or label is None:
|
|
continue
|
|
if label.upper() == 'ROOT' :
|
|
label = 'ROOT'
|
|
if head == child:
|
|
actions[BREAK][label] += 1
|
|
elif head < child:
|
|
actions[RIGHT][label] += 1
|
|
actions[REDUCE][''] += 1
|
|
elif head > child:
|
|
actions[LEFT][label] += 1
|
|
actions[SHIFT][''] += 1
|
|
if min_freq is not None:
|
|
for action, label_freqs in actions.items():
|
|
for label, freq in list(label_freqs.items()):
|
|
if freq < min_freq:
|
|
label_freqs.pop(label)
|
|
# Ensure these actions are present
|
|
actions[BREAK].setdefault('ROOT', 0)
|
|
if kwargs.get("learn_tokens") is True:
|
|
actions[RIGHT].setdefault('subtok', 0)
|
|
actions[LEFT].setdefault('subtok', 0)
|
|
# Used for backoff
|
|
actions[RIGHT].setdefault('dep', 0)
|
|
actions[LEFT].setdefault('dep', 0)
|
|
return actions
|
|
|
|
@property
|
|
def action_types(self):
|
|
return (SHIFT, REDUCE, LEFT, RIGHT, BREAK)
|
|
|
|
def transition(self, StateClass state, action):
|
|
cdef Transition t = self.lookup_transition(action)
|
|
t.do(state.c, t.label)
|
|
return state
|
|
|
|
def is_gold_parse(self, StateClass state, gold):
|
|
raise NotImplementedError
|
|
|
|
def init_gold(self, StateClass state, Example example):
|
|
gold = ArcEagerGold(self, state, example)
|
|
self._replace_unseen_labels(gold)
|
|
return gold
|
|
|
|
def init_gold_batch(self, examples):
|
|
all_states = self.init_batch([eg.predicted for eg in examples])
|
|
golds = []
|
|
states = []
|
|
for state, eg in zip(all_states, examples):
|
|
if self.has_gold(eg) and not state.is_final():
|
|
golds.append(self.init_gold(state, eg))
|
|
states.append(state)
|
|
n_steps = sum([len(s.queue) for s in states])
|
|
return states, golds, n_steps
|
|
|
|
def _replace_unseen_labels(self, ArcEagerGold gold):
|
|
backoff_label = self.strings["dep"]
|
|
root_label = self.strings["ROOT"]
|
|
left_labels = self.labels[LEFT]
|
|
right_labels = self.labels[RIGHT]
|
|
break_labels = self.labels[BREAK]
|
|
for i in range(gold.c.length):
|
|
if not is_head_unknown(&gold.c, i):
|
|
head = gold.c.heads[i]
|
|
label = self.strings[gold.c.labels[i]]
|
|
if head > i and label not in left_labels:
|
|
gold.c.labels[i] = backoff_label
|
|
elif head < i and label not in right_labels:
|
|
gold.c.labels[i] = backoff_label
|
|
elif head == i and label not in break_labels:
|
|
gold.c.labels[i] = root_label
|
|
return gold
|
|
|
|
cdef Transition lookup_transition(self, object name_or_id) except *:
|
|
if isinstance(name_or_id, int):
|
|
return self.c[name_or_id]
|
|
name = name_or_id
|
|
if '-' in name:
|
|
move_str, label_str = name.split('-', 1)
|
|
label = self.strings[label_str]
|
|
else:
|
|
move_str = name
|
|
label = 0
|
|
move = MOVE_NAMES.index(move_str)
|
|
for i in range(self.n_moves):
|
|
if self.c[i].move == move and self.c[i].label == label:
|
|
return self.c[i]
|
|
raise KeyError(f"Unknown transition: {name}")
|
|
|
|
def move_name(self, int move, attr_t label):
|
|
label_str = self.strings[label]
|
|
if label_str:
|
|
return MOVE_NAMES[move] + '-' + label_str
|
|
else:
|
|
return MOVE_NAMES[move]
|
|
|
|
def class_name(self, int i):
|
|
return self.move_name(self.c[i].move, self.c[i].label)
|
|
|
|
cdef Transition init_transition(self, int clas, int move, attr_t label) except *:
|
|
# TODO: Apparent Cython bug here when we try to use the Transition()
|
|
# constructor with the function pointers
|
|
cdef Transition t
|
|
t.score = 0
|
|
t.clas = clas
|
|
t.move = move
|
|
t.label = label
|
|
if move == SHIFT:
|
|
t.is_valid = Shift.is_valid
|
|
t.do = Shift.transition
|
|
t.get_cost = Shift.cost
|
|
elif move == REDUCE:
|
|
t.is_valid = Reduce.is_valid
|
|
t.do = Reduce.transition
|
|
t.get_cost = Reduce.cost
|
|
elif move == LEFT:
|
|
t.is_valid = LeftArc.is_valid
|
|
t.do = LeftArc.transition
|
|
t.get_cost = LeftArc.cost
|
|
elif move == RIGHT:
|
|
t.is_valid = RightArc.is_valid
|
|
t.do = RightArc.transition
|
|
t.get_cost = RightArc.cost
|
|
elif move == BREAK:
|
|
t.is_valid = Break.is_valid
|
|
t.do = Break.transition
|
|
t.get_cost = Break.cost
|
|
else:
|
|
raise ValueError(Errors.E019.format(action=move, src='arc_eager'))
|
|
return t
|
|
|
|
cdef int initialize_state(self, StateC* st) nogil:
|
|
for i in range(st.length):
|
|
if st._sent[i].dep == 0:
|
|
st._sent[i].l_edge = i
|
|
st._sent[i].r_edge = i
|
|
st._sent[i].head = 0
|
|
st._sent[i].dep = 0
|
|
st._sent[i].l_kids = 0
|
|
st._sent[i].r_kids = 0
|
|
st.fast_forward()
|
|
|
|
cdef int finalize_state(self, StateC* st) nogil:
|
|
cdef int i
|
|
for i in range(st.length):
|
|
if st._sent[i].head == 0:
|
|
st._sent[i].dep = self.root_label
|
|
|
|
def finalize_doc(self, Doc doc):
|
|
doc.is_parsed = True
|
|
set_children_from_heads(doc.c, doc.length)
|
|
|
|
def has_gold(self, Example eg, start=0, end=None):
|
|
for word in eg.y[start:end]:
|
|
if word.dep != 0:
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
cdef int set_valid(self, int* output, const StateC* st) nogil:
|
|
cdef bint[N_MOVES] is_valid
|
|
is_valid[SHIFT] = Shift.is_valid(st, 0)
|
|
is_valid[REDUCE] = Reduce.is_valid(st, 0)
|
|
is_valid[LEFT] = LeftArc.is_valid(st, 0)
|
|
is_valid[RIGHT] = RightArc.is_valid(st, 0)
|
|
is_valid[BREAK] = Break.is_valid(st, 0)
|
|
cdef int i
|
|
for i in range(self.n_moves):
|
|
if self.c[i].label == SUBTOK_LABEL:
|
|
output[i] = self.c[i].is_valid(st, self.c[i].label)
|
|
else:
|
|
output[i] = is_valid[self.c[i].move]
|
|
|
|
def get_cost(self, StateClass stcls, gold, int i):
|
|
if not isinstance(gold, ArcEagerGold):
|
|
raise TypeError("Expected ArcEagerGold")
|
|
cdef ArcEagerGold gold_ = gold
|
|
gold_state = gold_.c
|
|
n_gold = 0
|
|
if self.c[i].is_valid(stcls.c, self.c[i].label):
|
|
cost = self.c[i].get_cost(stcls, &gold_state, self.c[i].label)
|
|
else:
|
|
cost = 9000
|
|
return cost
|
|
|
|
cdef int set_costs(self, int* is_valid, weight_t* costs,
|
|
StateClass stcls, gold) except -1:
|
|
if not isinstance(gold, ArcEagerGold):
|
|
raise TypeError("Expected ArcEagerGold")
|
|
cdef ArcEagerGold gold_ = gold
|
|
gold_.update(stcls)
|
|
gold_state = gold_.c
|
|
cdef int n_gold = 0
|
|
for i in range(self.n_moves):
|
|
if self.c[i].is_valid(stcls.c, self.c[i].label):
|
|
is_valid[i] = True
|
|
costs[i] = self.c[i].get_cost(stcls, &gold_state, self.c[i].label)
|
|
if costs[i] <= 0:
|
|
n_gold += 1
|
|
else:
|
|
is_valid[i] = False
|
|
costs[i] = 9000
|
|
if n_gold < 1:
|
|
raise ValueError
|
|
|
|
def get_oracle_sequence_from_state(self, StateClass state, ArcEagerGold gold, _debug=None):
|
|
cdef int i
|
|
cdef Pool mem = Pool()
|
|
# n_moves should not be zero at this point, but make sure to avoid zero-length mem alloc
|
|
assert self.n_moves > 0
|
|
costs = <float*>mem.alloc(self.n_moves, sizeof(float))
|
|
is_valid = <int*>mem.alloc(self.n_moves, sizeof(int))
|
|
|
|
history = []
|
|
debug_log = []
|
|
failed = False
|
|
while not state.is_final():
|
|
try:
|
|
self.set_costs(is_valid, costs, state, gold)
|
|
except ValueError:
|
|
failed = True
|
|
break
|
|
for i in range(self.n_moves):
|
|
if is_valid[i] and costs[i] <= 0:
|
|
action = self.c[i]
|
|
history.append(i)
|
|
s0 = state.S(0)
|
|
b0 = state.B(0)
|
|
if _debug:
|
|
example = _debug
|
|
debug_log.append(" ".join((
|
|
self.get_class_name(i),
|
|
"S0=", (example.x[s0].text if s0 >= 0 else "__"),
|
|
"B0=", (example.x[b0].text if b0 >= 0 else "__"),
|
|
"S0 head?", str(state.has_head(state.S(0))),
|
|
)))
|
|
action.do(state.c, action.label)
|
|
break
|
|
else:
|
|
failed = False
|
|
break
|
|
if failed:
|
|
example = _debug
|
|
print("Actions")
|
|
for i in range(self.n_moves):
|
|
print(self.get_class_name(i))
|
|
print("Gold")
|
|
for token in example.y:
|
|
print(token.i, token.text, token.dep_, token.head.text)
|
|
aligned_heads, aligned_labels = example.get_aligned_parse()
|
|
print("Aligned heads")
|
|
for i, head in enumerate(aligned_heads):
|
|
print(example.x[i], example.x[head] if head is not None else "__")
|
|
|
|
print("Predicted tokens")
|
|
print([(w.i, w.text) for w in example.x])
|
|
s0 = state.S(0)
|
|
b0 = state.B(0)
|
|
debug_log.append(" ".join((
|
|
"?",
|
|
"S0=", (example.x[s0].text if s0 >= 0 else "-"),
|
|
"B0=", (example.x[b0].text if b0 >= 0 else "-"),
|
|
"S0 head?", str(state.has_head(state.S(0))),
|
|
)))
|
|
s0 = state.S(0)
|
|
b0 = state.B(0)
|
|
print("\n".join(debug_log))
|
|
print("Arc is gold B0, S0?", arc_is_gold(&gold.c, b0, s0))
|
|
print("Arc is gold S0, B0?", arc_is_gold(&gold.c, s0, b0))
|
|
print("is_head_unknown(s0)", is_head_unknown(&gold.c, s0))
|
|
print("is_head_unknown(b0)", is_head_unknown(&gold.c, b0))
|
|
print("b0", b0, "gold.heads[s0]", gold.c.heads[s0])
|
|
print("Stack", [example.x[i] for i in state.stack])
|
|
print("Buffer", [example.x[i] for i in state.queue])
|
|
raise ValueError(Errors.E024)
|
|
return history
|