diff options
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 |