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cs.LG2026

PerturbCellRL: Verifier-Guided Reinforcement Learning for Single-Cell Perturbation Prediction

Dongxia Wu, Mingyu Li, Yuhui Zhang +4

Single-cell perturbation models can reduce costly wet-lab screening by predicting how cells respond transcriptionally to interventions. While recent generative models improve popul…

cs.LG2026

CellFluxRL: Biologically-Constrained Virtual Cell Modeling via Reinforcement Learning

Dongxia Wu, Shiye Su, Yuhui Zhang +4

Building virtual cells with generative models to simulate cellular behavior in silico is emerging as a promising paradigm for accelerating drug discovery. However, prior image-base…

cs.LG2026

Uncertainty-Aware Distribution-to-Distribution Flow Matching for Scientific Imaging

Dongxia Wu, Yuhui Zhang, Serena Yeung-Levy +2

Distribution-to-distribution generative models support scientific imaging tasks ranging from modeling cellular perturbation responses to translating medical images across condition…

cs.LG2026

Functional-level Uncertainty Quantification for Calibrated Fine-tuning on LLMs

Ruijia Niu, Dongxia Wu, Rose Yu +1

Accurate uncertainty quantification in large language models (LLMs) is essential for reliable confidence estimation, yet fine-tuned LLMs often become overconfident under limited ad…

cs.LG2026

Divide and Learn: Multi-Objective Combinatorial Optimization at Scale

Esha Singh, Dongxia Wu, Chien-Yi Yang +3

Multi-objective combinatorial optimization seeks Pareto-optimal solutions over exponentially large discrete spaces, yet existing methods sacrifice generality, scalability, or theor…

cs.LG2025

Diffusion Models as Constrained Samplers for Optimization with Unknown Constraints

Lingkai Kong, Yuanqi Du, Wenhao Mu +8

Addressing real-world optimization problems becomes particularly challenging when analytic objective functions or constraints are unavailable. While numerous studies have addressed…