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Xinbei Ma

11 accepted papers

2025

Caution for the Environment: Multimodal LLM Agents are Susceptible to Environmental Distractions

ACL 2025long

This paper investigates the faithfulness of multimodal large language model (MLLM) agents in a graphical user interface (GUI) environment, aiming to address the research question of whether multimodal GUI agents can be distracted by environmental context. A general scenario is proposed where both th…

2025

MEGen: Generative Backdoor into Large Language Models via Model Editing

ACL 2025finding

Large language models (LLMs) have exhibited remarkable versatility and adaptability, while their widespread adoption across various applications also raises critical safety concerns.This paper focuses on the impact of backdoored LLMs. Traditional backdoor injection methods are primarily limited to y…

2025

PGPO: Enhancing Agent Reasoning via Pseudocode-style Planning Guided Preference Optimization

ACL 2025finding

Large Language Model (LLM) agents have demonstrated impressive capabilities in handling complex interactive problems. Existing LLM agents mainly generate natural language plans to guide reasoning, which is verbose and inefficient. NL plans are also tailored to specific tasks and restrict agents’ abi…

2025

Wide-Horizon Thinking and Simulation-Based Evaluation for Real-World LLM Planning with Multifaceted Constraints

NeurIPS 2025spotlight

Unlike reasoning, which often entails a deep sequence of deductive steps, complex real-world planning is characterized by the need to synthesize a broad spectrum of parallel and potentially conflicting information and constraints. For example, in travel planning scenarios, it requires the integratio…

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2024

CoCo-Agent: A Comprehensive Cognitive MLLM Agent for Smartphone GUI Automation

ACL 2024findings

Multimodal large language models (MLLMs) have shown remarkable potential as human-like autonomous language agents to interact with real-world environments, especially for graphical user interface (GUI) automation.However, those GUI agents require comprehensive cognition including exhaustive percepti…

2024

Dynamic Planning for LLM-based Graphical User Interface Automation

EMNLP 2024finding

The advent of large language models (LLMs) has spurred considerable interest in advancing autonomous LLMs-based agents, particularly in intriguing applications within smartphone graphical user interfaces (GUIs). When presented with a task goal, these agents typically emulate human actions within a G…

2024

On the Robustness of Editing Large Language Models

EMNLP 2024main

Large language models (LLMs) have played a pivotal role in building communicative AI, yet they encounter the challenge of efficient updates. Model editing enables the manipulation of specific knowledge memories and the behavior of language generation without retraining. However, the robustness of mo…

2024

PROM: A Phrase-level Copying Mechanism with Pre-training for Abstractive Summarization

COLING 2024main

Based on the remarkable achievements of pre-trained language models in abstractive summarization, the copying mechanism has proved helpful by improving the factuality, stability, and overall performance. This work proposes PROM, a new PhRase-level cOpying Mechanism that enhances attention on n-grams…