activity
20192026
most citedIs Vertical Logistic Regression Privacy-Preserving? A Comprehensive Privacy Analysis and Beyond

7 citations · 16 across the 15 of their papers we have counts for

collaborators

16 papers

cs.AI2026

Goedel-Architect: Streamlining Formal Theorem Proving with Blueprint Generation and Refinement

Jui-Hui Chung, Ziyang Cai, Zihao Li +14

We introduce Goedel-Architect, an agentic framework for formal theorem proving in Lean 4 centered on blueprint generation and refinement. A blueprint is a dependency graph of defin…

cs.LG2026

MLS-Bench: A Holistic and Rigorous Assessment of AI Systems on Building Better AI

Bohan Lyu, Yucheng Yang, Siqiao Huang +25

Modern AI progress has been driven by ML methods that are generalizable across settings and scalable to larger regimes. As large language models demonstrate advanced capabilities i…

cs.AI2026

Awakening the Sleeping Agent: Lean-Specific Agentic Data Reactivates General Tool Use in Goedel Prover

Jui-Hui Chung, Hongzhou Lin, Lai Jiang +2

Heavy supervised fine-tuning on a target domain can strongly suppress capabilities that were present in the base model. We study this phenomenon in formal mathematics using Goedel-…

cs.SE2026

Goedel-Code-Prover: Hierarchical Proof Search for Open State-of-the-Art Code Verification

Zenan Li, Ziran Yang, Deyuan He +7

Large language models (LLMs) can generate plausible code but offer limited guarantees of correctness. Formally verifying that implementations satisfy specifications requires constr…

cs.LG2025

Goedel-Prover-V2: Scaling Formal Theorem Proving with Scaffolded Data Synthesis and Self-Correction

Yong Lin, Shange Tang, Bohan Lyu +17

We introduce Goedel-Prover-V2, a series of open-source language models that set a new state-of-the-art in automated theorem proving. Built on the standard expert iteration and rein…

stat.ML2025

Principled Out-of-Distribution Generalization via Simplicity

Jiawei Ge, Amanda Wang, Shange Tang +1

Modern foundation models exhibit remarkable out-of-distribution (OOD) generalization, solving tasks far beyond the support of their training data. However, the theoretical principl…

cs.AI2025

Ineq-Comp: Benchmarking Human-Intuitive Compositional Reasoning in Automated Theorem Proving on Inequalities

Haoyu Zhao, Yihan Geng, Shange Tang +5

LLM-based formal proof assistants (e.g., in Lean) hold great promise for automating mathematical discovery. But beyond syntactic correctness, do these systems truly understand math…

cs.LG2025★ 1 cited

Is Elo Rating Reliable? A Study Under Model Misspecification

Shange Tang, Yuanhao Wang, Chi Jin

Elo rating, widely used for skill assessment across diverse domains ranging from competitive games to large language models, is often understood as an incremental update algorithm…

cs.LG2025★ 1 cited

MATH-Perturb: Benchmarking LLMs' Math Reasoning Abilities against Hard Perturbations

Kaixuan Huang, Jiacheng Guo, Zihao Li +15

Large language models have demonstrated impressive performance on challenging mathematical reasoning tasks, which has triggered the discussion of whether the performance is achieve…

cs.LG2025★ 2 cited

Goedel-Prover: A Frontier Model for Open-Source Automated Theorem Proving

Yong Lin, Shange Tang, Bohan Lyu +8

We introduce Goedel-Prover, an open-source language model that achieves state-of-the-art (as of April 5 2025) performance in automated formal proof generation for mathematical prob…

cs.LG2024

Benign Overfitting in Out-of-Distribution Generalization of Linear Models

Shange Tang, Jiayun Wu, Jianqing Fan +1

Benign overfitting refers to the phenomenon where an over-parameterized model fits the training data perfectly, including noise in the data, but still generalizes well to the unsee…

math.ST2024

Factor Adjusted Spectral Clustering for Mixture Models

Shange Tang, Soham Jana, Jianqing Fan

This paper studies a factor modeling-based approach for clustering high-dimensional data generated from a mixture of strongly correlated variables. Statistical modeling with correl…

stat.ML2023★ 1 cited

Maximum Likelihood Estimation is All You Need for Well-Specified Covariate Shift

Jiawei Ge, Shange Tang, Jianqing Fan +2

A key challenge of modern machine learning systems is to achieve Out-of-Distribution (OOD) generalization -- generalizing to target data whose distribution differs from that of sou…

stat.ML2023★ 3 cited

On the Provable Advantage of Unsupervised Pretraining

Jiawei Ge, Shange Tang, Jianqing Fan +1

Unsupervised pretraining, which learns a useful representation using a large amount of unlabeled data to facilitate the learning of downstream tasks, is a critical component of mod…

cs.CR2022★ 7 cited

Is Vertical Logistic Regression Privacy-Preserving? A Comprehensive Privacy Analysis and Beyond

Yuzheng Hu, Tianle Cai, Jinyong Shan +5

We consider vertical logistic regression (VLR) trained with mini-batch gradient descent -- a setting which has attracted growing interest among industries and proven to be useful i…

cs.LG2019★ 1 cited

Second-order Information in First-order Optimization Methods

Yuzheng Hu, Licong Lin, Shange Tang

In this paper, we try to uncover the second-order essence of several first-order optimization methods. For Nesterov Accelerated Gradient, we rigorously prove that the algorithm mak…