latest stuffHEADmaster

1 files changed, 67 insertions, 0 deletions

diff --git a/voted_rerank.rb b/voted_rerank.rb
new file mode 100755
index 0000000..684825d
--- /dev/null
+++ b/voted_rerank.rb
@@ -0,0 +1,67 @@
+#!/usr/bin/env ruby
+
+require 'zipf'
+
+class KbestItem
+  attr_accessor :rank, :model, :rr, :gold, :f
+  def initialize s
+    a = s.split "\t"
+    @rank = a[0].to_i
+    @gold = a[1].to_f
+    @model = a[2].to_f
+    @rr    = -1.0
+    @f = SparseVector.from_kv a[3], "=", " "
+  end
+
+  def to_s
+    return "#{@model}\t#{@gold}"
+  end
+end
+
+ws = []
+cs = []
+ReadFile.readlines_strip(ARGV[0]).each { |l|
+  c, s = l.split "\t"
+  cs << c.to_i
+  next if !s||s.strip==""
+  ws << SparseVector.from_kv(s, "=", " ")
+}
+
+def sign(x)
+  if x <= 0
+    return -1.0
+  else
+    return 1.0
+  end
+end
+
+def o kl
+  scores = []
+  scores << kl.first.gold
+  kl.sort! { |i,j| j.model <=> i.model }
+  scores << kl.first.gold
+  kl.sort! { |i,j| j.rr <=> i.rr }
+  scores << kl.first.gold
+
+  puts scores.join "\t"
+end
+
+STDERR.write "reranking..\n"
+cur = []
+k_sum = 0
+j = 0
+while line = STDIN.gets
+  item = KbestItem.new line.strip
+  item.rr = 0
+  ws.each_with_index{ |w,j|
+    item.rr += sign(w.dot(x))*cs[j]
+  }
+  if item.rank == 0 && cur.size > 0
+    o cur
+    cur = []
+    j += 1
+  end
+  cur << item
+end
+o cur
+