Created
January 21, 2015 06:52
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| function jaccardIndex(s1, s2) { | |
| // Jaccard index: http://en.wikipedia.org/wiki/Jaccard_index | |
| // size of the intersection divided by the size of the union of the sample sets | |
| s1 = _.isArray(s1) ? s1 : _.keys(s1); | |
| s2 = _.isArray(s2) ? s2 : _.keys(s2); | |
| return _.intersection(s1, s2).length / _.union(s1, s2).length | |
| } |
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