Test-time scaling in Diffusion Models

A review of researches that explore test-time scaling for diffusion models.

Overview

This post reviews three papers related to test-time scaling which enable optimization with restpect to diverse condtions without fine-tuning diffusion models nor training external models.

• Derivative-Free Guidance in Continuous and Discrete Diffusion Models with Soft Value-Based Decoding
• Test-Time Alignment of Diffusion Models without Reward Over-Optimization
• Inference-Time Scaling for Flow Models via Stochastic Generation and Rollover Budget Forcing

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