rewrote perceptron

1 files changed, 30 insertions, 0 deletions

diff --git a/perceptron-new-test.rb b/perceptron-new-test.rb
new file mode 100755
index 0000000..6566f68
--- /dev/null
+++ b/perceptron-new-test.rb
@@ -0,0 +1,30 @@
+#!/usr/bin/env ruby
+
+require 'zipf'
+
+STDERR.write "reading test data...\n"
+test = []
+test_f = ReadFile.new ARGV[0]
+n = 0
+while i = test_f.gets
+  test << SparseVector.from_kv(i.strip, '=', ' ')
+  n += 1
+  STDERR.write "#{n}\n" if n%1000==0
+end
+STDERR.write " test set size = #{test.size}\n"
+
+errors = 0
+w = SparseVector.from_kv ReadFile.new(ARGV[1]).read, "\t", "\n"
+
+test.each { |x|
+  m = w.dot(x)
+  if m <= 0.0
+    errors += 1
+    puts -1
+  else
+    puts 1
+  end
+}
+
+STDERR.write "accuracy = #{(test.size-errors)/test.size.to_f}\n"
+