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Ho and Salimans: classifier-free diffusion guidance

Contribution grade

Conditional generative-model sampling · Human-designed research method or resource

Reference score170,000Provisional editorial estimate of this exact contribution; its grade is assessed separately.

What changed

Combined conditional and unconditional diffusion score estimates to adjust the tradeoff between sample fidelity and diversity without a separate classifier.

Scientific scope

Combined conditional and unconditional diffusion score estimates to adjust the tradeoff between sample fidelity and diversity without a separate classifier. Year follows the 2021 workshop precursor identified in the expanded 2022 paper. Stronger guidance changes sample coverage; it is not a universal improvement or the original diffusion model.

Evidence

The linked original sources describe the stated contribution and its evidence limits. WRS has not independently rerun the experiments or certified a proof. Year follows the 2021 workshop precursor identified in the expanded 2022 paper. Stronger guidance changes sample coverage; it is not a universal improvement or the original diffusion model.

Contributors

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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