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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
#!/usr/bin/env ruby
require 'zipf'
def conv_cdec_show_deriv s
s.gsub! /\(/, "\n"
s.gsub! /[{}]/, ""
a = s.split "\n"
a.map! { |i|
i.strip.gsub /(\s*\))+$/, ""
}
a.reject! { |i| i.strip=="" }
return a
end
class RuleAndSpan
attr_accessor :span, :symbol, :source, :target, :subspans, :done, :id
def initialize s, id
spans, srcs, tgts = splitpipe s.strip
_,@symbol = spans.split
@span = _.split(",", 2).map { |i| i.gsub(/[<>]/, "").to_i}
@source = srcs.strip.split
j = 0
@source.map! { |i| if i.match(/\[X\]/) then "[#{j+=1}]" else i end }
@target = tgts.strip.split
@subspans = []
@done = false
@id = id
end
def to_s
return "#{@id}\t<#{@span.first},#{@span[1]}> [X] ||| #{@source.join " "} ||| #{@target.join " "}"
end
def is_terminal_rule?
@source.each { |w|
return true if !w.match(/\[S|(\d+)\]/)
}
return false
end
end
def proc_deriv s
a = conv_cdec_show_deriv s
by_span = {}
spans = []
id = 0
a.each { |line|
rs = RuleAndSpan.new line, id
id += 1
by_span[rs.span] = rs
if rs.is_terminal_rule?
spans << rs.span
end
}
spans.reverse.each_with_index { |s,k|
(spans.size-(k+2)).downto(0) { |l|
t = spans[l]
if s[0] >= t[0] and s[1] <= t[1]
by_span[t].subspans << s
break
end
}
}
# fix order
spans.each { |s|
by_span[s].subspans.reverse!
}
def derive span, spans, by_span, o, groups, source
if groups.size==0 || groups.last.size>0
groups << []
end
a = nil
if source
a = span.source
else
a = span.target
end
a.each_with_index { |w,k|
nt = w.match /\[(\d+)\]/
if nt
idx = nt.captures.first.to_i-1
_ = derive by_span[span.subspans[idx]], spans, by_span, o, groups, source
(k+1).upto(a.size-1) { |i|
if !a[i].match(/\[(\d+)\]/) && groups.last.size>0
groups << []
end
}
else
groups.last << ["#{w}", span.id]
o << w
end
}
span.done = true
end
so = []
source_groups = []
spans.each { |span|
next if by_span[span].done
derive by_span[span], spans, by_span, so, source_groups, true
}
#puts "SOURCE"
#puts so.join " "
#puts source_groups.to_s
#puts "##{source_groups.size}"
spans.each { |s| by_span[s].done = false }
o = []
groups = []
spans.each { |span|
next if by_span[span].done
derive by_span[span], spans, by_span, o, groups, false
}
#puts "TARGET"
#puts o.join " "
#puts groups.to_s
#puts "##{groups.size}"
source_rgroups = []
rgroups = []
source_groups.each { |i| source_rgroups << i.first[1] }
groups.each { |i| rgroups << i.first[1] }
phrase_align = []
source_rgroups.each { |i|
phrase_align << []
rgroups.each_with_index { |j,k|
if i==j
phrase_align.last << k
end
}
}
h = {}
h[:phrase_alignment] = phrase_align
h[:source_groups] = source_groups.map { |a| a.map { |i| i.first }.join " " }
h[:target_groups] = groups.map { |a| a.map { |i| i.first }.join " " }
return h.to_json
end
puts proc_deriv STDIN.gets.strip
|
