as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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state the main contribution of the paper "reinforcement learning: an introduction".
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the main contribution of the paper "reinforcement learning: an introduction" is to provide a comprehensive introduction to reinforcement learning topics, ranging from problem formulation to the latest advances in the field. it also covers algorithms and implementations, as well as the connections between reinforcement learning and other fields. furthermore, the paper presents a unified view of the field by considering its theoretical foundations and applications.
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