I'm fairly new to WP, but it struck me that this page could do with some work. As I'm doing a lit review for something else on a very similar subject, I can put a bit of time into cleaning this up. It strikes me that the academic literature has demonstrably moved on a bit since this was written (Frechet-distance, hMMs etc all need mentioning) Frenchmartini (talk) 22:57, 12 January 2016 (UTC)