across tasks whereas the w defines the task all right so the the goal here is that if you have learned many many things um during your tasks what you want to do is you want to learn this feature representation that is the same across all tasks and then you want to simply have the w specify how to mix these features to get the reward now of course this is a very strict very very definition not not a lot of things will fall into this unless you make the features like exponentially big of course um however they do