Dianbo Liu
2 indexed papers
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2With code
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226
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AI×2Vision×1ML×1
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Research Timeline
2026
Quotient DAGs for Off-Policy Evaluation:Forward-Flow Importance Sampling and Exact Slate Propensities
The paper introduces a quotient-DAG view to accurately estimate unordered slate propensities for off-policy evaluation, solving the nuisance variance and computational gap inherent in standard importance sampling for autoregressive recommenders.
Initialization is Half the Battle: Generating Diverse Images from a Guidance Potential Posterior
The paper introduces Diversity-inducing Initialization (DivIn), a novel method that improves image diversity by re-weighting the initial noise selection based on the guidance potential, thereby mitigating mode collapse.
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Papers
cs.CVcs.AIRecentJun 1, 2026
Initialization is Half the Battle: Generating Diverse Images from a Guidance Potential Posterior
The paper introduces Diversity-inducing Initialization (DivIn), a novel method that improves image diversity by re-weighting the initial noise selection based on the guidance potential, thereby mitiga…
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cs.LGcs.AIRecentMay 28, 2026