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Improve dynamic oracle when values are missing in parse

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This commit is contained in:
Matthew Honnibal 2018-05-07 15:53:18 +02:00
parent eddc0e0c74
commit f56bd4736b
1 changed files with 25 additions and 16 deletions
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25
spacy/syntax/arc_eager.pyx
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@ -58,9 +58,9 @@ cdef weight_t push_cost(StateClass stcls, const GoldParseC* gold, int target) no
cdef int i, S_i
for i in range(stcls.stack_depth()):
S_i = stcls.S(i)
if gold.heads[target] == S_i:
if gold.has_dep[target] and gold.heads[target] == S_i:
cost += 1
if gold.heads[S_i] == target and (NON_MONOTONIC or not stcls.has_head(S_i)):
if gold.has_dep[S_i] and gold.heads[S_i] == target and (NON_MONOTONIC or not stcls.has_head(S_i)):
cost += 1
if BINARY_COSTS and cost >= 1:
return cost
@ -73,10 +73,12 @@ cdef weight_t pop_cost(StateClass stcls, const GoldParseC* gold, int target) nog
cdef int i, B_i
for i in range(stcls.buffer_length()):
B_i = stcls.B(i)
if gold.has_dep[B_i]:
cost += gold.heads[B_i] == target
cost += gold.heads[target] == B_i
if gold.heads[B_i] == B_i or gold.heads[B_i] < target:
break
if gold.has_dep[target]:
cost += gold.heads[target] == B_i
if BINARY_COSTS and cost >= 1:
return cost
if Break.is_valid(stcls.c, 0) and Break.move_cost(stcls, gold) == 0:
@ -107,6 +109,9 @@ cdef bint arc_is_gold(const GoldParseC* gold, int head, int child) nogil:
cdef bint label_is_gold(const GoldParseC* gold, int head, int child, attr_t label) nogil:
if not gold.has_dep[child]:
if label == SUBTOK_LABEL:
return False
else:
return True
elif label == 0:
return True
@ -167,7 +172,7 @@ cdef class Reduce:
# Decrement cost for the arcs e save
for i in range(1, st.stack_depth()):
S_i = st.S(i)
if gold.heads[st.S(0)] == S_i:
if gold.has_dep[st.S(0)] and gold.heads[st.S(0)] == S_i:
cost -= 1
if gold.heads[S_i] == st.S(0):
cost -= 1
@ -208,7 +213,9 @@ cdef class LeftArc:
# Account for deps we might lose between S0 and stack
if not s.has_head(s.S(0)):
for i in range(1, s.stack_depth()):
if gold.has_dep[s.S(i)]:
cost += gold.heads[s.S(i)] == s.S(0)
if gold.has_dep[s.S(0)]:
cost += gold.heads[s.S(0)] == s.S(i)
return cost + pop_cost(s, gold, s.S(0)) + arc_cost(s, gold, s.B(0), s.S(0))
@ -284,18 +291,20 @@ cdef class Break:
S_i = s.S(i)
for j in range(s.buffer_length()):
B_i = s.B(j)
if gold.has_dep[S_i]:
cost += gold.heads[S_i] == B_i
if gold.has_dep[B_i]:
cost += gold.heads[B_i] == S_i
if cost != 0:
return cost
# Check for sentence boundary --- if it's here, we can't have any deps
# between stack and buffer, so rest of action is irrelevant.
s0_root = _get_root(s.S(0), gold)
b0_root = _get_root(s.B(0), gold)
if s0_root != b0_root or s0_root == -1 or b0_root == -1:
if not gold.has_dep[s.S(0)] or not gold.has_dep[s.B(0)]:
return cost
else:
if gold.sent_start[s.B_(0).l_edge] == -1:
return cost+1
else:
return cost
@staticmethod
cdef inline weight_t label_cost(StateClass s, const GoldParseC* gold, attr_t label) nogil: