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author | Christoph Helma <helma@in-silico.ch> | 2010-08-24 17:52:33 +0200 |
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committer | Christoph Helma <helma@in-silico.ch> | 2010-08-24 17:52:33 +0200 |
commit | 7cbb2402a4d01abcbfd3850650f9687b46804723 (patch) | |
tree | cc1a277081a38d553e7833a493bdf0c1b24be9fe /lib/algorithm.rb | |
parent | 8634a68f2eb77a9e73917bb2097d97eb207a544c (diff) |
initial lazar version for quantitative descriptors
Diffstat (limited to 'lib/algorithm.rb')
-rw-r--r-- | lib/algorithm.rb | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/algorithm.rb b/lib/algorithm.rb index 2fde0eb..d7b57af 100644 --- a/lib/algorithm.rb +++ b/lib/algorithm.rb @@ -64,6 +64,18 @@ module OpenTox 0.0 end end + def self.euclidean(prop_a,prop_b) + common_properties = prop_a.keys & prop_b.keys + if common_properties.size > 1 + dist_sum = 0 + common_properties.each do |p| + dist_sum += (prop_a[p] - prop_b[p])**2 + end + 1/(1+Math.sqrt(dist_sum)) + else + nil + end + end end end |