Users are invited to supply old photos of their loved ones, and the program uses deep learning to apply predetermined ... to a long-dead historical icon – knock on a mysterious emotional wall ...

Deep learning is a topic that is making big waves at the moment. It is basically a branch of machine learning (another hot topic) that uses algorithms to e.g. recognize objects and understand ...

No underlying principle has guided the design of these learning systems, other than vague inspiration drawn from the architecture of the brain (and no one really understands how that operates either).