Cryptoforestry: Food pairing / gastronomy with a telescope
The number of foodpairs a recipe generates increases exponentially with the number of ingredients. A typical cookbook (and the ones we use here are all modest one) yields anywhere between 700 and 2500 pairs, the number of connections when comparing three books is large and a really meaningful way to visualize a foodpair comparison we have not yet found. Instead we have turned to using the Jaccard Index, a simple formula for comparing similarity in datasets. If two book are absolutely similar (a book compared with itself) the index is 1, if the books are completely dissimilar the index is 0. So how higher the number how greater the similarity.
http://cryptoforest.blogspot.nl/2014/07/food-pairing-gastronomy-with-telescope.html