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Yudi Zhang

14 accepted papers

2026

DSSA: Dense-Sparse Switchable Attention for Seamless Short-to-Long Adaptation

ICLR 2026poster

Long-sequence processing is a critical capability for modern large language models. However, the self-attention mechanism in the standard Transformer architecture faces severe computational and memory bottlenecks when processing long sequences. While trainable sparse attention methods offer a promis…

Cited by 0SourceScholar
2026

PERSONAAGENT WITH GRAPHRAG: COMMUNITY-AWARE KNOWLEDGE GRAPHS FOR PERSONALIZED LLM

ICASSP 2026poster

We propose a novel framework for persona-based language model system, motivated by the need for personalized AI agents that adapt to individual user preferences. In our approach, the agent embodies the user's "persona" (e.g. user profile or taste) and is powered by a large language model (LLM). To e…

Cited by 3SourcePDFScholar
2025

Asclepius: A Spectrum Evaluation Benchmark for Medical Multi-Modal Large Language Models

ACL 2025long

The significant breakthroughs of Medical Multi-Modal Large Language Models (Med-MLLMs) renovate modern healthcare with robust information synthesis and medical decision support. However, these models are often evaluated on benchmarks that are unsuitable for the Med-MLLMs due to the intricate nature…

2025

Benchmarking Foundation Models with Retrieval-Augmented Generation in Olympic-Level Physics Problem Solving

EMNLP 2025

Retrieval-augmented generation (RAG) with foundation models has achieved strong performance across diverse tasks, but their capacity for expert-level reasoning—such as solving Olympiad-level physics problems—remains largely unexplored. Inspired by the way students prepare for competitions by reviewi

Cited by 0SourcePDFScholar
2025

Causality Meets Locality: Provably Generalizable and Scalable Policy Learning for Networked Systems

NeurIPS 2025spotlight

Large‑scale networked systems, such as traffic, power, and wireless grids, challenge reinforcement‑learning agents with both scale and environment shifts. To address these challenges, we propose \texttt{GSAC} (\textbf{G}eneralizable and \textbf{S}calable \textbf{A}ctor‑\textbf{C}ritic), a framework…

Cited by 0SourceScholar
2025

FR-Spec: Accelerating Large-Vocabulary Language Models via Frequency-Ranked Speculative Sampling

ACL 2025long

Speculative sampling has emerged as an important technique for accelerating the auto-regressive generation process of large language models (LLMs) by utilizing a draft-then-verify mechanism to produce multiple tokens per forward pass. While state-of-the-art speculative sampling methods use only a si…

2025

RuAG: Learned-rule-augmented Generation for Large Language Models

ICLR 2025poster

In-context learning (ICL) and Retrieval-Augmented Generation (RAG) have gained attention for their ability to enhance LLMs' reasoning by incorporating external knowledge but suffer from limited contextual window size, leading to insufficient information injection. To this end, we propose a novel fra…

Cited by 2SourcePDFScholar
2024

Large Language Models Are Neurosymbolic Reasoners

AAAI 2024technical

A wide range of real-world applications is characterized by their symbolic nature, necessitating a strong capability for symbolic reasoning. This paper investigates the potential application of Large Language Models (LLMs) as symbolic reasoners. We focus on text-based games, significant benchmarks f…

2024

Multimodal Molecular Pretraining via Modality Blending

ICLR 2024poster

Self-supervised learning has recently gained growing interest in molecular modeling for scientific tasks such as AI-assisted drug discovery. Current studies consider leveraging both 2D and 3D molecular structures for representation learning. However, relying on straightforward alignment strategies t…

Cited by 18SourcePDFScholar
2023

COOM: A Game Benchmark for Continual Reinforcement Learning

NeurIPS 2023poster

The advancement of continual reinforcement learning (RL) has been facing various obstacles, including standardized metrics and evaluation protocols, demanding computational requirements, and a lack of widely accepted standard benchmarks. In response to these challenges, we present COOM ($\textbf{C}$…

2023

Interpretable Reward Redistribution in Reinforcement Learning: A Causal Approach

NeurIPS 2023poster

A major challenge in reinforcement learning is to determine which state-action pairs are responsible for future rewards that are delayed. Reward redistribution serves as a solution to re-assign credits for each time step from observed sequences. While the majority of current approaches construct th…

2023

MMSD2.0: Towards a Reliable Multi-modal Sarcasm Detection System

ACL 2023findings

Multi-modal sarcasm detection has attracted much recent attention. Nevertheless, the existing benchmark (MMSD) has some shortcomings that hinder the development of reliable multi-modal sarcasm detection system: (1) There are some spurious cues in MMSD, leading to the model bias learning; (2) The neg…

2023

RSPT: Reconstruct Surroundings and Predict Trajectory for Generalizable Active Object Tracking

AAAI 2023technical

Active Object Tracking (AOT) aims to maintain a specific relation between the tracker and object(s) by autonomously controlling the motion system of a tracker given observations. It is widely used in various applications such as mobile robots and autonomous driving. However, Building a generalizable…