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Tianle Zhang

21 accepted papers

2026

Metis: Learning to Jailbreak LLMs via Self-Evolving Metacognitive Policy Optimization

ICML 2026poster

Red teaming is critical for uncovering vulnerabilities in Large Language Models (LLMs). While automated methods have improved scalability, existing approaches often rely on static heuristics or stochastic search, rendering them brittle against advanced safety alignment. To address this, we introduce…

Cited by 0SourceScholar
2026

To Align or Not to Align: Strategic Multimodal Representation Alignment for Optimal Performance

AAAI 2026technical

Multimodal learning often relies on aligning representations across modalities to enable effective information integration—an approach traditionally assumed to be universally beneficial. However, prior research has primarily taken an observational approach, examining naturally occurring alignment in

Cited by 0SourcePDFScholar
2026

Towards Understanding Modality Interaction in Multimodal Language Models via Partial Information Decomposition

ICML 2026poster

Understanding \emph{modality interaction} in multimodal large language models (MLLMs) remains a central challenge for reliable and interpretable deployment. We introduce Partial Information Decomposition (PID) as a unified, decision-level framework that separates \emph{unique}, \emph{redundant}, and…

Cited by 0SourceScholar
2026

When Safe Unimodal Inputs Collide: Optimizing Reasoning Chains for Cross-Modal Safety in Multimodal Large Language Models

AAAI 2026technical

Multimodal Large Language Models (MLLMs) are susceptible to the implicit reasoning risk, wherein innocuous unimodal inputs synergistically assemble into risky multimodal data that produce harmful outputs. We attribute this vulnerability to the difficulty of MLLMs maintaining safety alignment through

Cited by 0SourcePDFScholar
2025

Can LLMs Reason Over Non-Text Modalities in a Training-Free Manner? A Case Study with In-Context Representation Learning

NeurIPS 2025poster

The remarkable performance of Large Language Models (LLMs) can be enhanced with test-time computation, which relies on external tools and even other deep learning models. However, existing approaches for integrating non-text modality representations into LLMs typically require additional costly supe…

Cited by 0SourcecodeScholar
2025

IMPACT: Irregular Multi-Patch Adversarial Composition Based on Two‑Phase Optimization

NeurIPS 2025poster

Deep neural networks have become foundational in various applications but remain vulnerable to adversarial patch attacks. Crafting effective adversarial patches is inherently challenging due to the combinatorial complexity involved in jointly optimizing critical factors such as patch shape, location…

Cited by 0SourceScholar
2025

PIGDreamer: Privileged Information Guided World Models for Safe Partially Observable Reinforcement Learning

ICML 2025poster

Partial observability presents a significant challenge for safe reinforcement learning, as it impedes the identification of potential risks and rewards. Leveraging specific types of privileged information during training to mitigate the effects of partial observability has yielded notable empirical…

Cited by 0SourcePDFScholar
2025

RDI: An adversarial robustness evaluation metric for deep neural networks based on model statistical features

UAI 2025

Deep neural networks (DNNs) are highly susceptible to adversarial samples, raising concerns about their reliability in safety-critical tasks. Currently, methods of evaluating adversarial robustness are primarily categorized into attack-based and certified robustness evaluation approaches. The former

2024

ConvBench: A Multi-Turn Conversation Evaluation Benchmark with Hierarchical Ablation Capability for Large Vision-Language Models

NeurIPS 2024spotlight

Multi-turn visual conversation is an important ability of real-world AI assistants. However, the related evaluation benchmark is missed. This paper presents ConvBench, a multi-turn conversation benchmark with hierarchical capabilities ablation evaluation for Large Vision-Language Models (LVLMs). Co…

2024

DeepGRE: Global Robustness Evaluation of Deep Neural Networks

ICASSP 2024accepted

Robustness measurements on deep neural networks (DNNs) have gained significant attention, especially in safety-critical applications. Numerous studies have been devoted to assessing the robustness of classifiers by averaging local robustness over a fixed set of data samples, such as a test set. Howe…

Cited by 0SourceScholar
2024

MuEP: A Multimodal Benchmark for Embodied Planning with Foundation Models

IJCAI 2024poster

Foundation models have demonstrated significant emergent abilities, holding great promise for enhancing embodied agents' reasoning and planning capacities. However, the absence of a comprehensive benchmark for evaluating embodied agents with multimodal observations in complex environments remains a…

2024

Navigating Complexity: Toward Lossless Graph Condensation via Expanding Window Matching

ICML 2024poster

Graph condensation aims to reduce the size of a large-scale graph dataset by synthesizing a compact counterpart without sacrificing the performance of Graph Neural Networks (GNNs) trained on it, which has shed light on reducing the computational cost for training GNNs. Nevertheless, existing methods…

2024

PRASS: Probabilistic Risk-averse Robust Learning with Stochastic Search

IJCAI 2024poster

Deep learning models, despite their remarkable success in various tasks, have been shown to be vulnerable to adversarial perturbations. Although robust learning techniques that consider adversarial risks against worst-case perturbations can effectively increase a model's robustness, they may not alw…

Cited by 1SourcePDFScholar
2024

PTDE: Personalized Training with Distilled Execution for Multi-Agent Reinforcement Learning

IJCAI 2024poster

Centralized Training with Decentralized Execution (CTDE) has emerged as a widely adopted paradigm in multi-agent reinforcement learning, emphasizing the utilization of global information for learning an enhanced joint Q-function or centralized critic. In contrast, our investigation delves into harne…

Cited by 14SourcePDFScholar
2024

RePOSE: 3D Human Pose Estimation via Spatio-Temporal Depth Relational Consistency

ECCV 2024poster

"We introduce RePOSE, a simple yet effective approach for addressing occlusion challenges in the learning of 3D human pose estimation (HPE) from videos. Conventional approaches typically employ absolute depth signals as supervision, which are adept at discernible keypoints but become less reliable w…

2024

Rethinking Human Evaluation Protocol for Text-to-Video Models: Enhancing Reliability, Reproducibility, and Practicality

NeurIPS 2024poster

Recent text-to-video (T2V) technology advancements, as demonstrated by models such as Gen2, Pika, and Sora, have significantly broadened its applicability and popularity. Despite these strides, evaluating these models poses substantial challenges. Primarily, due to the limitations inherent in auto…

2024

Reward Certification for Policy Smoothed Reinforcement Learning

AAAI 2024technical

Reinforcement Learning (RL) has achieved remarkable success in safety-critical areas, but it can be weakened by adversarial attacks. Recent studies have introduced ``smoothed policies" to enhance its robustness. Yet, it is still challenging to establish a provable guarantee to certify the bound of i…

2024

Towards Fairness-Aware Adversarial Learning

CVPR 2024poster

Although adversarial training (AT) has proven effective in enhancing the model's robustness the recently revealed issue of fairness in robustness has not been well addressed i.e. the robust accuracy varies significantly among different categories. In this paper instead of uniformly evaluating the mo…

2022

Multi-Target Encirclement with Collision Avoidance via Deep Reinforcement Learning using Relational Graphs

ICRA 2022poster

In this paper, we propose a novel decentralized method based on deep reinforcement learning using robot-level and target-level relational graphs, to solve the problem of multi-target encirclement with collision avoidance (MECA). Specifically, the robot-level relational graphs, composed of three hete…

Cited by 13SourceScholar
2022

Multi-UAV Cooperative Short-Range Combat via Attention-Based Reinforcement Learning using Individual Reward Shaping

IROS 2022poster

In this paper, we propose a novel distributed method based on attention-based deep reinforcement learning using individual reward shaping, for multiple unmanned aerial vehicles (UAVs) cooperative short-range combat mission. Specifically, a two-level attention distributed policy, composed of observat…

Cited by 13SourceScholar
2021

Multi-target Coverage with Connectivity Maintenance using Knowledge-incorporated Policy Framework

ICRA 2021poster

This paper considers a multi-target coverage problem where a robot team aims to efficiently cover multi-targets while maintaining connectivity in a distributed manner. A novel knowledge-incorporated policy framework is proposed to derive a distributed, efficient, and connectivity guaranteed coverage…

Cited by 11SourceScholar