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author | Christoph Helma <helma@in-silico.ch> | 2015-10-08 10:32:31 +0200 |
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committer | Christoph Helma <helma@in-silico.ch> | 2015-10-08 10:32:31 +0200 |
commit | 6bde559981fa11ffd265af708956f9d4ee6c9a89 (patch) | |
tree | 0fdeff56c476bb2eb0e6a2af895a1e9306645904 /lib/overwrite.rb | |
parent | c974ddec27b8e505a8dc22a7c99f2e4b8682aa48 (diff) |
crossvalidation plots, original classification confidence
Diffstat (limited to 'lib/overwrite.rb')
-rw-r--r-- | lib/overwrite.rb | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/overwrite.rb b/lib/overwrite.rb index be90c56..c92ad2b 100644 --- a/lib/overwrite.rb +++ b/lib/overwrite.rb @@ -96,6 +96,16 @@ class Array self.inject{ |sum, el| sum + el }.to_f / self.size end + def sample_variance + m = self.mean + sum = self.inject(0){|accum, i| accum +(i-m)**2 } + sum/(self.length - 1).to_f + end + + def standard_deviation + Math.sqrt(self.sample_variance) + end + end module URI |