Presentation with audio: https://www.youtube.com/watch?v=heYj8sCmWCo
Finding the names in tweets is difficult. However, with a few simple modifications to handle the noise and variety in tweets, and a automatic post-editor to fix errors made by the automatic systems, it becomes easier.
Full paper: http://derczynski.com/sheffield/papers/person_tweets.pdf
Clipping is a handy way to collect important slides you want to go back to later.