1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
#!/usr/bin/env python2
import cdec
import sys, argparse
def hg2json(hg, weights):
"""
output a JSON representation of a cdec hypegraph
(see http://aclweb.org/aclwiki/index.php?title=Hypergraph_Format )
"""
res = ''
res += "{\n"
res += '"weights":{'+"\n"
a = []
for i in weights:
a.append( '"%s":%s'%(i[0], i[1]) )
res += ", ".join(a)+"\n"
res += "},\n"
res += '"nodes":'+"\n"
res += "[\n"
a = []
a.append( '{ "label":"root", "cat":"root" }' )
for i in hg.nodes:
a.append( '{ "label":"%s", "cat":"%s", "left":%d, "right":%d }'%(i.id, i.cat, i.span[0], i.span[1]) )
res += ",\n".join(a)+"\n"
res += "],\n"
res += '"edges":'+"\n"
res += "[\n"
a = []
for i in hg.edges:
s = "{"
s += '"head":"%s"'%(i.head_node.id)
s += ', "rule":"%s"'%(i.trule)
s += ', "left":%d'%(i.span[0])
s += ', "right":%d'%(i.span[1])
#s += ', "leftx":%d'%(i.src_span[0])
#s += ', "rightx":%d'%(i.src_span[1])
s += ', "spans":"'
q = 0
for z in i.tail_nodes:
s+= "%s|||%d|||(%d,%d);"%(z.cat, q, z.span[0], z.span[1])
q += 1
s += '"'
xs = ' "f":{'
b = []
for j in i.feature_values:
b.append( '"%s":%s'%(j[0], j[1]) )
xs += ", ".join(b)
xs += "},"
c = []
for j in i.tail_nodes:
c.append( '"'+str(j.id)+'"' )
if len(c) > 0:
s += ', "tails":[ %s ],'%(",".join(c))
else:
s += ', "tails":[ "root" ],'
s += xs
s += ' "weight":%s }'%(i.prob)
a.append(s)
res += ",\n".join(a)+"\n"
res += "]\n"
res += "}\n"
return res
def main():
parser = argparse.ArgumentParser(description='get a proper json representation of cdec hypergraphs')
parser.add_argument('-c', '--config', required=True, help='decoder configuration')
parser.add_argument('-w', '--weights', required=True, help='feature weights')
args = parser.parse_args()
with open(args.config) as config:
config = config.read()
decoder = cdec.Decoder(config)
decoder.read_weights(args.weights)
ins = sys.stdin.readline().strip()
hg = decoder.translate(ins)
sys.stderr.write( "input:\n '%s'\n"%(ins) )
sys.stderr.write( "viterbi translation:\n '%s'\n"%(hg.viterbi()) )
num_nodes = 0
for i in hg.nodes: num_nodes+=1
sys.stderr.write( "# nodes = %s\n"%(num_nodes) )
num_edges = 0
for i in hg.edges: num_edges+=1
sys.stderr.write( "# edges = %s\n"%(num_edges) )
sys.stderr.write( "viterbi score = %s\n"%(round(hg.viterbi_features().dot(decoder.weights), 2)) )
print hg2json(hg, decoder.weights)
if __name__=="__main__":
main()
|
