Search Results for author: Tianjie Ju

Found 15 papers, 9 papers with code

EVA: Red-Teaming GUI Agents via Evolving Indirect Prompt Injection

no code implementations20 May 2025 Yijie Lu, Tianjie Ju, Manman Zhao, Xinbei Ma, Yuan Guo, Zhuosheng Zhang

As multimodal agents are increasingly trained to operate graphical user interfaces (GUIs) to complete user tasks, they face a growing threat from indirect prompt injection, attacks in which misleading instructions are embedded into the agent's visual environment, such as popups or chat messages, and misinterpreted as part of the intended task.

Red Teaming

Hidden Ghost Hand: Unveiling Backdoor Vulnerabilities in MLLM-Powered Mobile GUI Agents

no code implementations20 May 2025 Pengzhou Cheng, Haowen Hu, Zheng Wu, Zongru Wu, Tianjie Ju, Daizong Ding, Zhuosheng Zhang, Gongshen Liu

Graphical user interface (GUI) agents powered by multimodal large language models (MLLMs) have shown greater promise for human-interaction.

Contrastive Learning Red Teaming

On Path to Multimodal Generalist: General-Level and General-Bench

no code implementations7 May 2025 Hao Fei, Yuan Zhou, Juncheng Li, Xiangtai Li, Qingshan Xu, Bobo Li, Shengqiong Wu, Yaoting Wang, Junbao Zhou, Jiahao Meng, Qingyu Shi, Zhiyuan Zhou, Liangtao Shi, Minghe Gao, Daoan Zhang, Zhiqi Ge, Weiming Wu, Siliang Tang, Kaihang Pan, Yaobo Ye, Haobo Yuan, Tao Zhang, Tianjie Ju, Zixiang Meng, Shilin Xu, Liyu Jia, Wentao Hu, Meng Luo, Jiebo Luo, Tat-Seng Chua, Shuicheng Yan, Hanwang Zhang

This project introduces General-Level, an evaluation framework that defines 5-scale levels of MLLM performance and generality, offering a methodology to compare MLLMs and gauge the progress of existing systems towards more robust multimodal generalists and, ultimately, towards AGI.

Large Language Model Multimodal Large Language Model

Probing then Editing Response Personality of Large Language Models

1 code implementation14 Apr 2025 Tianjie Ju, Zhenyu Shao, Bowen Wang, Yujia Chen, Zhuosheng Zhang, Hao Fei, Mong-Li Lee, Wynne Hsu, Sufeng Duan, Gongshen Liu

We conduct probing experiments on 11 open-source LLMs over the PersonalityEdit benchmark and find that LLMs predominantly encode personality for responding in their middle and upper layers, with instruction-tuned models demonstrating a slightly clearer separation of personality traits.

MMLU

Watch Out Your Album! On the Inadvertent Privacy Memorization in Multi-Modal Large Language Models

1 code implementation3 Mar 2025 Tianjie Ju, Yi Hua, Hao Fei, Zhenyu Shao, Yubin Zheng, Haodong Zhao, Mong-Li Lee, Wynne Hsu, Zhuosheng Zhang, Gongshen Liu

Multi-Modal Large Language Models (MLLMs) have exhibited remarkable performance on various vision-language tasks such as Visual Question Answering (VQA).

Memorization Question Answering +1

Smoothing Grounding and Reasoning for MLLM-Powered GUI Agents with Query-Oriented Pivot Tasks

no code implementations1 Mar 2025 Zongru Wu, Pengzhou Cheng, Zheng Wu, Tianjie Ju, Zhuosheng Zhang, Gongshen Liu

Perception-enhanced pre-training, particularly through grounding techniques, is widely adopted to enhance the performance of graphical user interface (GUI) agents.

Investigating the Adaptive Robustness with Knowledge Conflicts in LLM-based Multi-Agent Systems

1 code implementation21 Feb 2025 Tianjie Ju, Bowen Wang, Hao Fei, Mong-Li Lee, Wynne Hsu, Yun Li, Qianren Wang, Pengzhou Cheng, Zongru Wu, Zhuosheng Zhang, Gongshen Liu

Recent advances in Large Language Models (LLMs) have upgraded them from sophisticated text generators to autonomous agents capable of corporation and tool use in multi-agent systems (MASs).

NSmark: Null Space Based Black-box Watermarking Defense Framework for Language Models

1 code implementation16 Oct 2024 Haodong Zhao, Jinming Hu, Peixuan Li, Fangqi Li, Jinrui Sha, Tianjie Ju, Peixuan Chen, Zhuosheng Zhang, Gongshen Liu

Language models (LMs) have emerged as critical intellectual property (IP) assets that necessitate protection.

Flooding Spread of Manipulated Knowledge in LLM-Based Multi-Agent Communities

1 code implementation10 Jul 2024 Tianjie Ju, Yiting Wang, Xinbei Ma, Pengzhou Cheng, Haodong Zhao, Yulong Wang, Lifeng Liu, Jian Xie, Zhuosheng Zhang, Gongshen Liu

The rapid adoption of large language models (LLMs) in multi-agent systems has highlighted their impressive capabilities in various applications, such as collaborative problem-solving and autonomous negotiation.

counterfactual Fact Checking +3

TrojanRAG: Retrieval-Augmented Generation Can Be Backdoor Driver in Large Language Models

1 code implementation22 May 2024 Pengzhou Cheng, Yidong Ding, Tianjie Ju, Zongru Wu, Wei Du, Ping Yi, Zhuosheng Zhang, Gongshen Liu

To improve the recall of the RAG for the target contexts, we introduce a knowledge graph to construct structured data to achieve hard matching at a fine-grained level.

Backdoor Attack Contrastive Learning +3

Federated Semi-supervised Learning for Medical Image Segmentation with intra-client and inter-client Consistency

no code implementations19 Mar 2024 Yubin Zheng, Peng Tang, Tianjie Ju, Weidong Qiu, Bo Yan

The intra-client and inter-client consistency learning are introduced to smooth predictions at the data level and avoid confirmation bias of local models.

Data Augmentation Federated Learning +6

How Large Language Models Encode Context Knowledge? A Layer-Wise Probing Study

1 code implementation25 Feb 2024 Tianjie Ju, Weiwei Sun, Wei Du, Xinwei Yuan, Zhaochun Ren, Gongshen Liu

Previous work has showcased the intriguing capability of large language models (LLMs) in retrieving facts and processing context knowledge.

Investigating Multi-Hop Factual Shortcuts in Knowledge Editing of Large Language Models

1 code implementation19 Feb 2024 Tianjie Ju, Yijin Chen, Xinwei Yuan, Zhuosheng Zhang, Wei Du, Yubin Zheng, Gongshen Liu

Recent work has showcased the powerful capability of large language models (LLMs) in recalling knowledge and reasoning.

knowledge editing

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