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Answers for “为什么接受-拒绝采样对复杂分布效率低下?”

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The key insight is that instead of treating each sample independently, dependent sampling uses the information from the previous sample to determine the next one. This creates a chain of information that flows from sample to sample, allowing the sampler to intelligently explore high-probability regions.

Conditions: Each new sample is drawn from a probability distribution conditioned on the previous sample.; The formula is Xn+1∼P(⋅∣Xn)X_{n+1} \sim P(\cdot|X_n).; Applies to complex probability distributions with multiple peaks and weird shapes.