← Search

Xiangcheng Liu

6 accepted papers

2026

GUI-Eyes: Tool-Augmented Perception for Visual Grounding in GUI Agents

AAAI 2026technical

Recent advances in vision-language models (VLMs) and reinforcement learning (RL) have driven progress in GUI automation. However, most existing methods rely on static, one-shot visual inputs and passive perception, lacking the ability to adaptively determine when, whether, and how to observe the int

Cited by 0SourcePDFScholar
2025

ACEBench: A Comprehensive Evaluation of LLM Tool Usage

EMNLP 2025

Large Language Models (LLMs) have demonstrated significant potential in decision-making and reasoning, particularly when integrated with various tools to effectively solve complex problems. However, existing benchmarks for evaluating LLMs’ tool usage face several limitations: (1) limited evaluation

Cited by 0SourcePDFScholar
2023

Adaptive Sparse ViT: Towards Learnable Adaptive Token Pruning by Fully Exploiting Self-Attention

IJCAI 2023poster

Vision transformer has emerged as a new paradigm in computer vision, showing excellent performance while accompanied by expensive computational cost. Image token pruning is one of the main approaches for ViT compression, due to the facts that the complexity is quadratic with respect to the token num…

2022

A free lunch from ViT: adaptive attention multi-scale fusion Transformer for fine-grained visual recognition

ICASSP 2022accepted

Learning subtle representation about object parts plays a vital role in fine-grained visual recognition (FGVR) field. The vision transformer (ViT) achieves promising results on computer vision due to its attention mechanism. Nonetheless, with the fixed size of patches in ViT, the class token in deep…

Cited by 0SourceScholar
2022

RAPQ: Rescuing Accuracy for Power-of-Two Low-bit Post-training Quantization

IJCAI 2022poster

We introduce a Power-of-Two post-training quantization( PTQ) method for deep neural network that meets hardware requirements and does not call for long-time retraining. PTQ requires a small set of calibration data and is easier for deployment, but results in lower accuracy than Quantization-Aware Tr…