Note: The live demo site <a href="http://yass.ai" rel="nofollow noreferrer">http://yass.ai</a> can't handle simultaneous users, so if you want to try YASS, you are best off running it locally. If you know how to fix the simultaneous user issue (session handling) then please make a PR and help us improve YASS! Code was written in a weekend for a hackathon, so go easy.