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Ziyi Zhou

18 accepted papers

2026

Attack the Messages, Not the Agents: A Multi-round Adaptive Stealthy Tampering Framework for LLM-MAS

AAAI 2026technical

Large language model-based multi-agent systems (LLM-MAS) effectively accomplish complex and dynamic tasks through inter-agent communication, but this reliance introduces substantial safety vulnerabilities. Existing attack methods targeting LLM-MAS either compromise agent internals or rely on direct

Cited by 10SourcePDFScholar
2026

GeWu: A Culturally-Grounded Chinese Benchmark for Multi-Stage Social Bias Evaluation in Large Language Models

AAAI 2026technical

With the rapid deployment of Chinese large language models (LLMs), culturally-grounded bias evaluation remains understudied due to the dominance of English benchmarks and simplistic Chinese scenarios. To address this, we propose GeWu, a comprehensive benchmark featuring a culturally-aware dataset of

Cited by 0SourcePDFScholar
2026

On the Feasibility of Using MultiModal LLMs to Execute AR Social Engineering Attacks

AAAI 2026technical

Augmented Reality (AR) and Multimodal Large Language Models (LLMs) are rapidly evolving, providing unprecedented capabilities for human-computer interaction. However, their integration introduces a new attack surface for Social Engineering (SE). In this paper, we systematically investigate the feasi

Cited by 0SourcePDFScholar
2026

Opt2Skill: Imitating Dynamically-Feasible Whole-Body Trajectories for Versatile Humanoid Loco-Manipulation

ICRA 2026poster

Humanoid robots are designed to perform diverse loco-manipulation tasks. However, they face challenges due to their high-dimensional and unstable dynamics, as well as the complex contact-rich nature of the tasks. Model-based optimal control methods offer flexibility to define precise motion but are …

2026

SEEC: Stable End-Effector Control with Model-Enhanced Residual Learning for Humanoid Loco-Manipulation

ICRA 2026poster

Arm end-effector stabilization is essential for humanoid loco-manipulation tasks, yet it remains challenging due to the high degrees of freedom and inherent dynamic instability of bipedal robot structures. Previous model-based controllers achieve precise end-effector control but rely on precise dyna…

2026

Unified Analyses for Hierarchical Federated Learning: Topology Selection under Data Heterogeneity

ICLR 2026poster

Hierarchical Federated Learning (HFL) addresses critical scalability limitations in conventional federated learning by incorporating intermediate aggregation layers, yet optimal topology selection across varying data heterogeneity conditions and network conditions remains an open challenge. This pap…

Cited by 0SourceScholar
2025

Collaborative Evolution: Multi-Round Learning Between Large and Small Language Models for Emergent Fake News Detection

AAAI 2025technical

The proliferation of fake news on social media platforms has exerted a substantial influence on society, leading to discernible impacts and deleterious consequences. Conventional deep learning methodologies employing small language models (SLMs) suffer from the necessity for extensive supervised tra…

Cited by 0SourcePDFScholar
2025

Opt2Skill: Imitating Dynamically-Feasible Whole-Body Trajectories for Versatile Humanoid Loco-Manipulation

RA-L 2025

Humanoid robots are designed to perform diverse loco-manipulation tasks. However, they face challenges due to their high-dimensional and unstable dynamics, as well as the complex contact-rich nature of the tasks. Model-based optimal control methods offer flexibility to define precise motion but are

Cited by 50SourcecodeScholar
2025

Physically-Feasible Reactive Synthesis for Terrain-Adaptive Locomotion via Trajectory Optimization and Symbolic Repair

IROS 2025

We propose an integrated planning framework for quadrupedal locomotion over dynamically changing, unforeseen terrains. Existing approaches either rely on heuristics for instantaneous foothold selection–compromising safety and versatility–or solve expensive trajectory optimization problems with compl

Cited by 1SourceScholar
2025

Simultaneous Collision Detection and Force Estimation for Dynamic Quadrupedal Locomotion

ICRA 2025

In this paper we address the simultaneous collision detection and force estimation problem for quadrupedal locomotion using joint encoder information and the robot dynamics only. We design an interacting multiple-model Kalman filter (IMM-KF) that estimates the external force exerted on the robot and

Cited by 0SourceScholar
2024

Hierarchical Experience-informed Navigation for Multi-modal Quadrupedal Rebar Grid Traversal

ICRA 2024poster

This study focuses on a layered, experience-based, multi-modal contact planning framework for agile quadrupedal locomotion over a constrained rebar environment. To this end, our hierarchical planner incorporates locomotion-specific modules into the high-level contact sequence planner and performs ki…

Cited by 4SourceScholar
2024

ProSST: Protein Language Modeling with Quantized Structure and Disentangled Attention

NeurIPS 2024poster

Protein language models (PLMs) have shown remarkable capabilities in various protein function prediction tasks. However, while protein function is intricately tied to structure, most existing PLMs do not incorporate protein structure information. To address this issue, we introduce ProSST, a Transfo…

Cited by 0SourcePDFScholar
2024

Reinforced Adaptive Knowledge Learning for Multimodal Fake News Detection

AAAI 2024technical

Nowadays, detecting multimodal fake news has emerged as a foremost concern since the widespread dissemination of fake news may incur adverse societal impact. Conventional methods generally focus on capturing the linguistic and visual semantics within the multimodal content, which fall short in effe…

Cited by 27SourcePDFScholar
2024

Unveiling the Bias Impact on Symmetric Moral Consistency of Large Language Models

NeurIPS 2024poster

Large Language Models (LLMs) have demonstrated remarkable capabilities, surpassing human experts in various benchmark tests and playing a vital role in various industry sectors. Despite their effectiveness, a notable drawback of LLMs is their inconsistent moral behavior, which raises ethical concern…

Cited by 0SourcePDFScholar
2023

GPF-BG: A Hierarchical Vision-Based Planning Framework for Safe Quadrupedal Navigation

ICRA 2023poster

Safe quadrupedal navigation through unknown environments is a challenging problem. This paper proposes a hierarchical vision-based planning framework (GPF-BG) integrating our previous Global Path Follower (GPF) navigation system and a gap-based local planner using Bézier curves, so called BBézier Ga…

Cited by 11SourceScholar
2023

LiveChat: A Large-Scale Personalized Dialogue Dataset Automatically Constructed from Live Streaming

ACL 2023long

Open-domain dialogue systems have made promising progress in recent years. While the state-of-the-art dialogue agents are built upon large-scale social media data and large pre-trained models, there is no guarantee these agents could also perform well in fast-growing scenarios, such as live streamin…

2022

Momentum-Aware Trajectory Optimization and Control for Agile Quadrupedal Locomotion

RA-L 2022

In this letter, we present a versatile hierarchical offline planning algorithm, along with an online control pipeline for agile quadrupedal locomotion. Our offline planner alternates between optimizing centroidal dynamics for a reduced-order model and whole-body trajectory optimization, with the aim

Cited by 36SourceScholar
2020

Simultaneous Trajectory Optimization and Force Control with Soft Contact Mechanics

IROS 2020poster

Force modulation of robotic manipulators has been extensively studied for several decades but is not yet commonly used in safety-critical applications due to a lack of accurate interaction contact modeling and weak performance guarantees - a large proportion of them concerning the modulation of inte…

Cited by 6SourceScholar