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a guest Apr 23rd, 2019 54 Never
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  1. let cosine = (tfIdf1,tfIdf2)=>tfIdf1.reduce((acc,curr,index)=>acc+curr*tfIdf2[index],0) / (Math.sqrt(tfIdf1.reduce((acc,curr)=>acc+curr*curr,0))*Math.sqrt(tfIdf2.reduce((acc,curr)=>acc+curr*curr,0)))
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