activity
20202026
most citedOnline Covariance Matrix Estimation in Stochastic Gradient Descent

4 citations · 5 across the 17 of their papers we have counts for

collaborators

19 papers

cs.CV2026

Thinking with Anchors: Grounded and Efficient Document Reasoning

Sichen Zhu, Yuchen Zhu, Wenzhuo Xu +13

Existing document understanding benchmarks have largely focused on locating page elements, yet real-world document intelligence requires models to reason jointly about region seman…

cs.CL2026

Spinning Straw into Gold: Relabeling LLM Agent Trajectories in Hindsight for Successful Demonstrations

Zichao Li, Gang Wu, Zichao Wang +5

Large language model agents operate in partially observable, long-horizon settings where obtaining supervision remains a major bottleneck. We address this by utilizing a source of…

cs.LG2026

FLARE: Diffusion for Hybrid Language Model

Yuchen Zhu, Jing Shi, Chongjian Ge +9

Autoregressive (AR) large language models (LLMs) have achieved broad practical success, but sequential decoding remains a key bottleneck for low-latency deployment. Recent efficien…

stat.ML2026

Conformalized Percentile Interval: Finite Sample Validity and Improved Conditional Performance

Ran Zou, Wanrong Zhu, Bin Nan

Conformal prediction provides distribution-free predictive intervals with finite-sample marginal coverage. However, achieving conditional validity and interval efficiency (in terms…

stat.ML2026

Refining Covariance Matrix Estimation in Stochastic Gradient Descent Through Bias Reduction

Ziyang Wei, Wanrong Zhu, Jingyang Lyu +1

We study online inference and asymptotic covariance estimation for the stochastic gradient descent (SGD) algorithm. While classical methods (such as plug-in and batch-means estimat…

cs.CV2026

AnyDoc: Enhancing Document Generation via Large-Scale HTML/CSS Data Synthesis and Height-Aware Reinforcement Optimization

Jiawei Lin, Wanrong Zhu, Vlad I Morariu +1

Document generation has gained growing attention in the field of AI-driven content creation. In this work, we push its boundaries by introducing AnyDoc, a framework capable of hand…

cs.CV2026

MiLDEdit: Reasoning-Based Multi-Layer Design Document Editing

Zihao Lin, Wanrong Zhu, Jiuxiang Gu +8

Real-world design documents (e.g., posters) are inherently multi-layered, combining decoration, text, and images. Editing them from natural-language instructions requires fine-grai…

stat.ML2026

A Flexible Empirical Bayes Approach to Generalized Linear Models, with Applications to Sparse Logistic Regression

Dongyue Xie, Matthew Stephens

We introduce a flexible empirical Bayes approach for fitting Bayesian generalized linear models. Specifically, we adopt a novel mean-field variational inference (VI) method and the…

cs.CV2025

Text-Conditioned Background Generation for Editable Multi-Layer Documents

Taewon Kang, Joseph K J, Chris Tensmeyer +4

We present a framework for document-centric background generation with multi-page editing and thematic continuity. To ensure text regions remain readable, we employ a latent maskin…

cs.AI2025

OIDA-QA: A Multimodal Benchmark for Analyzing the Opioid Industry Documents Archive

Xuan Shen, Brian Wingenroth, Zichao Wang +12

The opioid crisis represents a significant moment in public health that reveals systemic shortcomings across regulatory systems, healthcare practices, corporate governance, and pub…

cs.CV2025

GUI-AIMA: Aligning Intrinsic Multimodal Attention with a Context Anchor for GUI Grounding

Shijie Zhou, Viet Dac Lai, Hao Tan +4

Graphical user interface (GUI) grounding is a key capability for computer-use agents, mapping natural-language instructions to actionable regions on the screen. Existing Multimodal…

stat.ML2025

Online Statistical Inference of Constrained Stochastic Optimization via Random Scaling

Xinchen Du, Wanrong Zhu, Wei Biao Wu +1

Constrained stochastic nonlinear optimization problems have attracted significant attention for their ability to model complex real-world scenarios in physics, economics, and biolo…

cs.CV2025

Towards Visual Text Grounding of Multimodal Large Language Model

Ming Li, Ruiyi Zhang, Jian Chen +7

Despite the existing evolution of Multimodal Large Language Models (MLLMs), a non-neglectable limitation remains in their struggle with visual text grounding, especially in text-ri…

stat.ME2024

Conformal prediction after data-dependent model selection

Ruiting Liang, Wanrong Zhu, Rina Foygel Barber

Given a family of pretrained models and a hold-out set, how can we construct a valid conformal prediction set while selecting a model that minimizes the width of the set? If we use…

cs.CV2024

GenEARL: A Training-Free Generative Framework for Multimodal Event Argument Role Labeling

Hritik Bansal, Po-Nien Kung, P. Jeffrey Brantingham +2

Multimodal event argument role labeling (EARL), a task that assigns a role for each event participant (object) in an image is a complex challenge. It requires reasoning over the en…

stat.ML2024

High Confidence Level Inference is Almost Free using Parallel Stochastic Optimization

Wanrong Zhu, Zhipeng Lou, Ziyang Wei +1

Uncertainty quantification for estimation through stochastic optimization solutions in an online setting has gained popularity recently. This paper introduces a novel inference met…

stat.ME2023

Approximate co-sufficient sampling with regularization

Wanrong Zhu, Rina Foygel Barber

In this work, we consider the problem of goodness-of-fit (GoF) testing for parametric models. This testing problem involves a composite null hypothesis, due to the unknown values o…

stat.ML2023★ 1 cited

Weighted Averaged Stochastic Gradient Descent: Asymptotic Normality and Optimality

Ziyang Wei, Wanrong Zhu, Wei Biao Wu

Stochastic Gradient Descent (SGD) is one of the most popular algorithms in statistical and machine learning due to its computational and memory efficiency. Various averaging scheme…

stat.ML2020★ 4 cited

Online Covariance Matrix Estimation in Stochastic Gradient Descent

Wanrong Zhu, Xi Chen, Wei Biao Wu

The stochastic gradient descent (SGD) algorithm is widely used for parameter estimation, especially for huge data sets and online learning. While this recursive algorithm is popula…