fake_svm_light: invert data in svm light format

1 files changed, 14 insertions, 0 deletions

diff --git a/fake_svm_light b/fake_svm_light
new file mode 100755
index 0000000..eb074c1
--- /dev/null
+++ b/fake_svm_light
@@ -0,0 +1,14 @@
+#!/usr/bin/env ruby
+
+while line = STDIN.gets
+  a = line.split
+  label = a.shift.to_f
+  label *= -1
+  a.map! { |i|
+    k,v = i.split ":"
+    v = v.to_f*-1
+    "#{k}:#{v}"
+  }
+  puts "#{label} #{a.join ' '}"
+end
+