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Cheng-Hao Liu

9 accepted papers

2026

OXtal: An All-Atom Diffusion Model for Organic Crystal Structure Prediction

ICLR 2026poster

Accurately predicting experimentally-realizable $3\textrm{D}$ molecular crystal structures from their $2\textrm{D}$ chemical graphs is a long-standing open challenge in computational chemistry called $\textit{crystal structure prediction}$ (CSP). Efficiently solving this problem has implications ran…

Cited by 0SourceScholar
2026

SynCoGen: Synthesizable 3D Molecule Generation via Joint Reaction and Coordinate Modeling

ICLR 2026poster

Ensuring synthesizability in generative small molecule design remains a major challenge. While recent developments in synthesizable molecule generation have demonstrated promising results, these efforts have been largely confined to 2D molecular graph representations, limiting the ability to perform…

Cited by 0SourcecodeScholar
2025

Flow Factorization for Efficient Generative Flow Networks

AAAI 2025technical

Generative Flow Networks (GFlowNets) is a new family of probabilistic samplers for generating objects under an unnormalized reward distribution. It has emerged as a promising framework for learning stochastic policies that generate high-quality and diverse discrete objects proportional to their rewa…

Cited by 0SourcePDFScholar
2025

Steering Masked Discrete Diffusion Models via Discrete Denoising Posterior Prediction

ICLR 2025poster

Generative modeling of discrete data underlies important applications spanning text-based agents like ChatGPT to the design of the very building blocks of life in protein sequences. However, application domains need to exert control over the generated data by steering the generative process—typicall…

Cited by 8SourcePDFScholar
2024

Diffusion Generative Flow Samplers: Improving learning signals through partial trajectory optimization

ICLR 2024poster

We tackle the problem of sampling from intractable high-dimensional density functions, a fundamental task that often appears in machine learning and statistics. We extend recent sampling-based approaches that leverage controlled stochastic processes to model approximate samples from these target de…

2024

Iterated Denoising Energy Matching for Sampling from Boltzmann Densities

ICML 2024poster

Efficiently generating statistically independent samples from an unnormalized probability distribution, such as equilibrium samples of many-body systems, is a foundational problem in science. In this paper, we propose Iterated Denoising Energy Matching (iDEM), an iterative algorithm that uses a nove…

2024

RGFN: Synthesizable Molecular Generation Using GFlowNets

NeurIPS 2024poster

Generative models hold great promise for small molecule discovery, significantly increasing the size of search space compared to traditional in silico screening libraries. However, most existing machine learning methods for small molecule generation suffer from poor synthesizability of candidate com…

2024

SE(3)-Stochastic Flow Matching for Protein Backbone Generation

ICLR 2024spotlight

The computational design of novel protein structures has the potential to impact numerous scientific disciplines greatly. Toward this goal, we introduce \foldflow, a series of novel generative models of increasing modeling power based on the flow-matching paradigm over $3\mathrm{D}$ rigid motions---…

2024

Sequence-Augmented SE(3)-Flow Matching For Conditional Protein Generation

NeurIPS 2024poster

Proteins are essential for almost all biological processes and derive their diverse functions from complex $3 \rm D$ structures, which are in turn determined by their amino acid sequences. In this paper, we exploit the rich biological inductive bias of amino acid sequences and introduce FoldFlow++,…

Cited by 31SourcePDFScholar