Before revision:  A user's request at a time slot is satisfied if the requested file is already hosted on at least one of the caches connected to the user at that time slot. Our objective is to design an efficient online caching policy with minimal regret.
After revision:  A user's request at a time slot is satisfied if the requested file is already hosted on at least one of the caches connected to the user . The objective is to design an efficient online caching policy with minimal regret.