A nice overview of the tools and technologies related to Big Data applications. Ricard truly showed his deep expertise in this field and delivered the session with his relaxed and extrovert character.
Thank you all for the feedback so far, it's really appreciated
@Alberto: would you mind pointing out some of the inaccuracies you mention? I'd really like to improve things if I can
I understand that some people may think that this kind of sessions are "too far from PHP". But it's important to be exposed to these advanced topics during conferences, because you don't have time to investigate them in your daily work.
Regarding the session contents, I found the ANN theory part extremely advanced. I guess that the topic itself is impossible to be explained in a more clear way given the short amount of time available. However, Ariel and Eduardo could think of simpler ways to explain these basic concepts, such as using more visual diagrams or showing some extremely simple example code.
Overall, I liked the session a lot because it's totally different from what you would expect in a PHP/Symfony conference and because it was really cool to watch Symfony Console component playing Tic-Tac-Toe against a human.