Is it worth going to a conference [IEEE UEMCON] to get my undergraduate thesis published?
If you see yourself in an academic setting in the future, this could help you. It's no guarantee, but it is very likely. This is a merit in the academic world. If you are coming from computer science and going into industry right away, and are done with academia, the published paper will not matter. CS people get jobs anyway without much trouble. 

You'd need to try and see this as an investment into your future career IF you want to work in academia. Otherwise it's a cool item on ones resumé, but it won't nessecarily add much after you've gained some work experience which I'd like to guess will carry heavier weight than the paper.