Reading time ~5 minutes Warning this post contains some math. Even more, it shows how to use it for solving real life problems. This post describes how I calculate similarity between recipes in my pet project cookit.pl. For those of you that don’t know, cookit is a search engine for recipes. It crawls websites extracting recipe texts, then it parses it and tries to create a precise ingredient list with amounts and units. 182 184 recipes2936 ingredients This scale may not seem huge, but tr...