The now famous Flying Machine Arena from Swiss Federal Institute of Technology in Zurich (ETHZ) uploaded another video. This time they demonstrate the ability of the system to learn through practice. By using data from past experiments the quad is able to follow the exact trajectory given as a target, even if there are changes to the environment like the demonstration with the wind gust from the fan. For more information visit the website of Control of Distributed, Autonomous Systems lab.

(via http://www.robotspodcast.com/news/