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• W2400719195 abstract "Artificial intelligence is commonly defined as the ability to achieve goals in the world. In the reinforcement learning framework, goals are encoded as reward functions that guide agent behaviour, and the sum of observed rewards provide a notion of progress. However, some domains have no such reward signal, or have a reward signal so sparse as to appear absent. Without reward feedback, agent behaviour is typically random, often dithering aimlessly and lacking intentionality. In this paper we present an algorithm capable of learning purposeful behaviour in the absence of rewards. The algorithm proceeds by constructing temporally extended actions (options), through the identification of purposes that are just out of reach of the agent's current behaviour. These purposes establish intrinsic goals for the agent to learn, ultimately resulting in a suite of behaviours that encourage the agent to visit different parts of the state space. Moreover, the approach is particularly suited for settings where rewards are very sparse, and such behaviours can help in the exploration of the environment until reward is observed." @default.
• W2400719195 created "2016-06-24" @default.
• W2400719195 creator A5081163135 @default.
• W2400719195 creator A5085413987 @default.
• W2400719195 date "2016-05-25" @default.
• W2400719195 modified "2023-09-27" @default.
• W2400719195 title "Learning Purposeful Behaviour in the Absence of Rewards." @default.
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• W2400719195 hasPublicationYear "2016" @default.
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