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Chang Gao

19 accepted papers

2026

Learning Neural Operators from Partial Observations via Latent Autoregressive Modeling

AAAI 2026technical

Real-world scientific applications frequently encounter incomplete observational data due to sensor limitations, geographic constraints, or measurement costs. Although neural operators significantly advanced PDE solving in terms of computational efficiency and accuracy, their underlying assumption o

Cited by 0SourcePDFScholar
2026

MANZANO: A Simple and Scalable Unified Multimodal Model with a Hybrid Vision Tokenizer

ICLR 2026poster

Unified multimodal Large Language Models (LLMs) that can both understand and generate visual content hold immense potential. However, existing open-source models often suffer from a performance trade-off between these capabilities. We present Manzano, a simple and scalable unified framework that sub…

Cited by 0SourceScholar
2026

Revealing Behavioral Plasticity in Large Language Models: A Token-Conditional Perspective

ICML 2026poster

In this work, we reveal that Large Language Models (LLMs) possess intrinsic behavioral plasticity—akin to chameleons adapting their coloration to environmental cues—that can be *exposed* through token-conditional generation and *stabilized* via reinforcement learning. Specifically, by conditioning g…

Cited by 0SourceScholar
2025

Beyond the 80/20 Rule: High-Entropy Minority Tokens Drive Effective Reinforcement Learning for LLM Reasoning

NeurIPS 2025poster

Reinforcement Learning with Verifiable Rewards (RLVR) has emerged as a powerful approach to enhancing the reasoning capabilities of Large Language Models (LLMs), yet its underlying mechanisms remain insufficiently understood. In this work, we undertake a pioneering exploration of RLVR through the no…

Cited by 0SourceScholar
2025

FACET: Fast and Accurate Event-Based Eye Tracking Using Ellipse Modeling for Extended Reality

ICRA 2025

Eye tracking is a key technology for gaze-based interactions in Extended Reality (XR), but traditional frame-based systems struggle to meet XR's demands for high accuracy, low latency, and power efficiency. Event cameras offer a promising alternative due to their high temporal resolution and low pow

Cited by 9SourcecodeScholar
2025

FPGA Hardware Neural Control of CartPole and F1TENTH Race Car

IROS 2025

Latency and computational cost often limit the use of Nonlinear Model Predictive Control (NMPC) in real-time robotics. To address this limitation, our work investigates FPGA-implemented Neural Controllers (NC) trained through supervised learning, mimicking NMPC. We show that inexpensive embedded FPG

Cited by 0SourcecodeScholar
2025

JsonTuning: Towards Generalizable, Robust, and Controllable Instruction Tuning

ACL 2025finding

Instruction tuning is vital for enhancing the performance of large language models (LLMs), but existing text-to-text methods, referred to as TextTuning, struggle with issues such as generalization, robustness, and controllability due to their lack of explicit task structures. We introduce JsonTuning…

2025

SWE-Fixer: Training Open-Source LLMs for Effective and Efficient GitHub Issue Resolution

ACL 2025finding

Large Language Models (LLMs) have demonstrated remarkable proficiency across a variety of complex tasks. One significant application of LLMs is in tackling software engineering challenges, particularly in resolving real-world tasks on GitHub by fixing code based on the issues reported by the users.…

2024

CodeAttack: Revealing Safety Generalization Challenges of Large Language Models via Code Completion

ACL 2024findings

The rapid advancement of Large Language Models (LLMs) has brought about remarkable generative capabilities but also raised concerns about their potential misuse. While strategies like supervised fine-tuning and reinforcement learning from human feedback have enhanced their safety, these methods prim…

2024

Exploiting Symmetric Temporally Sparse BPTT for Efficient RNN Training

AAAI 2024technical

Recurrent Neural Networks (RNNs) are useful in temporal sequence tasks. However, training RNNs involves dense matrix multiplications which require hardware that can support a large number of arithmetic operations and memory accesses. Implementing online training of RNNs on the edge calls for optimiz…

Cited by 2SourcePDFScholar
2024

FreeEval: A Modular Framework for Trustworthy and Efficient Evaluation of Large Language Models

EMNLP 2024system demonstrations

The rapid growth of evaluation methodologies and datasets for large language models (LLMs) has created a pressing need for their unified integration. Meanwhile, concerns about data contamination and bias compromise the trustworthiness of evaluation findings, while the efficiency of evaluation proces…

2024

KIEval: A Knowledge-grounded Interactive Evaluation Framework for Large Language Models

ACL 2024long

Automatic evaluation methods for large language models (LLMs) are hindered by data contamination, leading to inflated assessments of their effectiveness. Existing strategies, which aim to detect contaminated texts, focus on quantifying contamination status instead of accurately gauging model perform…

Cited by 28SourcePDFScholar
2024

StrategyLLM: Large Language Models as Strategy Generators, Executors, Optimizers, and Evaluators for Problem Solving

NeurIPS 2024poster

Most existing prompting methods suffer from the issues of generalizability and consistency, as they often rely on instance-specific solutions that may not be applicable to other instances and lack task-level consistency across the selected few-shot examples. To address these limitations, we propose…

2023

M3Exam: A Multilingual, Multimodal, Multilevel Benchmark for Examining Large Language Models

NeurIPS 2023poster

Despite the existence of various benchmarks for evaluating natural language processing models, we argue that human exams are a more suitable means of evaluating general intelligence for large language models (LLMs), as they inherently demand a much wider range of abilities such as language understan…

2022

Prompt Conditioned VAE: Enhancing Generative Replay for Lifelong Learning in Task-Oriented Dialogue

EMNLP 2022main

Lifelong learning (LL) is vital for advanced task-oriented dialogue (ToD) systems. To address the catastrophic forgetting issue of LL, generative replay methods are widely employed to consolidate past knowledge with generated pseudo samples. However, most existing generative replay methods use only…

2022

Towards Generalizable and Robust Text-to-SQL Parsing

EMNLP 2022finding

Text-to-SQL parsing tackles the problem of mapping natural language questions to executable SQL queries. In practice, text-to-SQL parsers often encounter various challenging scenarios, requiring them to be generalizable and robust. While most existing work addresses a particular generalization or ro…

2022

UniGDD: A Unified Generative Framework for Goal-Oriented Document-Grounded Dialogue

ACL 2022short

The goal-oriented document-grounded dialogue aims at responding to the user query based on the dialogue context and supporting document. Existing studies tackle this problem by decomposing it into two sub-tasks: knowledge identification and response generation. However, such pipeline methods would u…

2020

Recurrent Neural Network Control of a Hybrid Dynamical Transfemoral Prosthesis with EdgeDRNN Accelerator

ICRA 2020poster

Lower leg prostheses could improve the life quality of amputees by increasing comfort and reducing energy to locomote, but currently control methods are limited in modulating behaviors based upon the human's experience. This paper describes the first steps toward learning complex controllers for dyn…

Cited by 20SourceScholar