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Chenghui Zhou

4 accepted papers

2025

Chemistry-Inspired Diffusion with Non-Differentiable Guidance

ICLR 2025poster

Recent advances in diffusion models have shown remarkable potential in the conditional generation of novel molecules. These models can be guided in two ways: (i) explicitly, through additional features representing the condition, or (ii) implicitly, using a property predictor. However, training prop…

2022

Variational autoencoders in the presence of low-dimensional data: landscape and implicit bias

ICLR 2022poster

Variational Autoencoders (VAEs) are one of the most commonly used generative models, particularly for image data. A prominent difficulty in training VAEs is data that is supported on a lower dimensional manifold. Recent work by Dai and Wipf (2020) proposes a two-stage training algorithm for VAEs, ba…

2021

Unsupervised program synthesis for images by sampling without replacement

UAI 2021poster

Program synthesis has emerged as a successful approach to the image parsing task. Most prior works rely on a two-step scheme involving supervised pretraining of a Seq2Seq model with synthetic programs followed by reinforcement learning (RL) for fine-tuning with real reference images. Fully unsupervi…

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