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Reinforcement learning (RL) differs fundamentally from supervised learning (SL) in its focus and methodology. RL is designed to handle sequential decision-making problems, where an agent interacts with an environment and learns by maximizing cumulative rewards over time. Key distinctions include: 1. Sequential Decision-Making: RL considers the state of an environment at each step and takes actions that impact future states. For example, in a robot navigating a maze, each action influences the subsequent positions, making the process dynamic and sequential. 2. Absence of Labeled Data: Unlike SL, RL does not rely on labeled input-output pairs. Instead, it uses reward signals as feedback to adjust its actions. 3. Cumulative Reward Optimization: RL aims to maximize long-term benefits, taking into account delayed rewards. This approach is essential in tasks like game-playing or resource allocation. In contrast, SL operates on fixed datasets where inputs and corresponding outputs are predefined, making it effective for tasks like classification and regression but unsuitable for dynamic environments. Why Other Options Are Incorrect: • A) RL requires labeled data: RL does not use labeled datasets; it relies on interaction and feedback from the environment. • B) SL optimizes based on immediate feedback: SL does not work with feedback; it uses labeled data to minimize loss. RL focuses on cumulative rewards, not immediate feedback. • C) RL operates without feedback: RL explicitly depends on feedback in the form of rewards or penalties. • D) SL is used for exploration: SL predicts based on historical data, whereas RL uses exploration to improve decision-making policies.
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