Because when you do the method what you end up with is cos(Θ) where Θ is the angle between both of the sets in some m dimensional space. Look up dot product you'll know what I'm talking about. The dot product generalizes to higher dimension so you can use it on anything that looks like a vector and people do, a lot. lol
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Why is it called cosine method?
Can anyone explained
Because when you do the method what you end up with is cos(Θ) where Θ is the angle between both of the sets in some m dimensional space. Look up dot product you'll know what I'm talking about. The dot product generalizes to higher dimension so you can use it on anything that looks like a vector and people do, a lot. lol