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Jerry Zhijian Yang

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Aug 2026

Offline Deep Q* Estimation with Diffusion Models

A novel framework is proposed that decouples operator estimation from value function learning and establishes the smoothness of $Q^*$ through the Bellman equation using the the Holder assumptions on the conditional reward and transition densities.

Xiao-Hong Chen, Yu-Ling Jiao, Li-Can Kang et al. · 0 citations
#machine learning Preprint Oct 2026

Conditional Flow Models for Offline Maximum Entropy Reinforcement Learning

Offline maximum entropy reinforcement learning seeks to estimate the optimal soft action-value function \(Q^*\) from a fixed dataset without further interaction with the environment. Although \(Q^*\) is characterized by the soft optimal Bellman equation, the corresponding Bellman operator cannot be evaluated directly b...

Hao Cheng, Yu-Ling Jiao, Li-Can Kang et al. · 0 citations
#machine learning Preprint Oct 2026

Annealed L\'{e}vy Diffusion via Gaussian Surrogate Reverse Dynamics

Gaussian diffusion models offer a practical framework for generative modeling. Denoising L\'{e}vy Probabilistic Models (DLPM) introduce heavy-tailed perturbations with a fixed tail index throughout denoising. We introduce Annealed L\'{e}vy Diffusion (ALD). ALD varies the stability index $\alpha(t)$ to combine heavy-tai...

Yu-Ling Jiao, Li-Can Kang, Jerry Zhijian Yang et al. · 0 citations
#machine learning Preprint Oct 2026

Joint Contrastive-Adversarial Representation Learning for Unsupervised Domain Adaptation

Effective unsupervised domain adaptation (UDA) requires a representation that captures transferable structure from both the labeled source domain and the unlabeled target domain. We introduce Joint Contrastive-Adversarial Representation Learning (JCAR), a two-stage framework that learns a common representation from the...

Yu-Ling Jiao, Li-Can Kang, Jerry Zhijian Yang et al. · 0 citations
#machine learning Preprint Oct 2026

Latent-Space Importance Weighting under Covariate Shift

In this work, we propose a transfer learning algorithm for covariate shift, integrating sample reweighting with representation learning. A key feature of our approach is the use of a lower-dimensional latent space for modeling, in contrast to conventional methods that operate directly in the high-dimensional ambient sp...

Yu-Ling Jiao, Li-Can Kang, Yang Xiang et al. · 0 citations
#machine learning Preprint Sep 2026

Deep Weighted Bellman Residual Minimization for $Q^*$ Estimation

A weighted Bellman residual minimization framework that incorporates density ratio weighting by effectively integrating expert demonstrations with behavioral data is introduced, providing specific guidance for the rational utilization of expert demonstrations.

Li-Can Kang, Jerry Zhijian Yang, Cheng Yuan et al. · 0 citations
Preprint Aug 2026

Offline Deep Q* Estimation with Diffusion Models

In offline RL, estimating the optimal action-value function $Q^*$ can be formulated as solving the optimal Bellman equation based solely on offline observations. A fundamental challenge is that the reward function and transition kernel are unknown, so the optimal Bellman operator is not directly observable from data. T...

Xiao-Hong Chen, Yu-Ling Jiao, Li-Can Kang et al. · 0 citations

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