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#!/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
w = SparseVector.from_kv ReadFile.new(ARGV[0]).read, /\s/, "\n"
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 = w.dot(item.f)
if item.rank == 0 && cur.size > 0
o cur
cur = []
j += 1
end
cur << item
end
o cur
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