Wegiveanoverviewofrecentexcitingachievementsofdeepreinforcementlearning(RL).Wediscusssixcoreelements,siximportantmechanisms,andtwelveapplications.Westartwithbackgroundofmachinelearning,deeplearningandreinforcementlearning.NextwediscusscoreRLelements,includingvaluefunction,inparticular,D