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Weikai Xu

8 accepted papers

2026

CoME: Empowering Channel-of-Mobile-Experts with Informative Hybrid-Capabilities Reasoning

ICML 2026poster

Mobile Agents can autonomously execute user instructions, which requires hybrid-capabilities reasoning, including screen summary, subtask planning, action decision and action function. However, existing agents struggle to achieve both decoupled enhancement and balanced integration of these capabilit…

Cited by 0SourceScholar
2026

MobileIPL: Enhancing Mobile Agents Thinking Process via Iterative Preference Learning

ICLR 2026poster

The Chain of Action-Planning Thoughts (CoaT) paradigm has been shown to improve the reasoning performance of VLM-based mobile agents in GUI tasks. However, the scarcity of diverse CoaT trajectories limits the expressiveness and generalization ability of such agents. While self-training is commonly e…

Cited by 0SourceScholar
2026

SMAN-Bench: A Cross-System Benchmark for Mobile Agents under Single- and Multi-path, Ambiguous, and Noisy Tasks

ICLR 2026poster

VLM-based mobile agents are increasingly popular due to their capabilities to interact with smartphone GUIs and XML-structured texts and to complete daily tasks. However, existing online benchmarks fail to obtain stable critical reward signals under dynamic environmental changes, and neglect the inf…

Cited by 0SourcecodeScholar
2025

PMSS: Pretrained Matrices Skeleton Selection for LLM Fine-tuning

COLING 2025main

Low-rank adaptation (LoRA) and its variants have recently gained much interest due to their ability to avoid excessive inference costs. However, LoRA still encounters the following challenges: (1) Limitation of low-rank assumption; and (2) Its initialization method may be suboptimal. To this end, we…

Cited by 3SourcePDFScholar
2025

V-VAE: A Variational Auto Encoding Framework Towards Fine-Grained Control over Human-Like Chat

EMNLP 2025

With the continued proliferation of Large Language Model (LLM) based chatbots, there is a growing demand for generating responses that are not only linguistically fluent but also consistently aligned with persona-specific traits in conversations. However, existing role-play and persona-based chat ap

Cited by 0SourcePDFScholar
2024

DetermLR: Augmenting LLM-based Logical Reasoning from Indeterminacy to Determinacy

ACL 2024long

Recent advances in large language models (LLMs) have revolutionized the landscape of reasoning tasks. To enhance the capabilities of LLMs to emulate human reasoning, prior studies have focused on modeling reasoning steps using various thought structures like chains, trees, or graphs. However, LLM-ba…

2024

Mobile-Bench: An Evaluation Benchmark for LLM-based Mobile Agents

ACL 2024long

With the remarkable advancements of large language models (LLMs), LLM-based agents have become a research hotspot in human-computer interaction.However, there is a scarcity of benchmarks available for LLM-based mobile agents.Benchmarking these agents generally faces three main challenges:(1) The ine…

2024

MobileVLM: A Vision-Language Model for Better Intra- and Inter-UI Understanding

EMNLP 2024finding

Recently, mobile AI agents based on VLMs have been gaining increasing attention. These works typically utilize VLM as a foundation, fine-tuning it with instruction-based mobile datasets. However, these VLMs are typically pre-trained on general-domain data, which often results in a lack of fundamenta…