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Zhitong Guo

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Preprint Aug 2026

MELLON - Multimodal Enhanced LLM for Online Navigation

Web navigation agents are capable of addressing various types of tasks on different websites. Current baselines on web navigation are either unimodal or lack strong reasoning abilities given multimodal inputs. Focusing on the WebShop benchmark, a real-world website simulation, we explore the alignment of text and image...

Rui-Yu Li, Hao-Yang Cai, Zhi-Tong Guo et al. · 0 citations
#natural language process... Preprint Aug 2026

Improving LLM-based Autonomous Web Agents with Filtering

DeBERTa-based and T5-based models that rank HTML elements by their relevance to the task and a zero-shot ColBERT-based retriever that is able to retrieve the ground-truth element with a recall of 0.52 on Mind2Web and 0.47 on WebArena are developed.

Zhi-Tong Guo, Jing Yu Koh, Rui-Yu Li · 0 citations
Preprint Jul 2026

Toward User-Conditioned Evaluation of Personal LLM Agents under Temporal Interventions

A minimal benchmark design and candidate reporting metrics for user-conditioned adaptation are proposed and a concrete design requirement for future personal-agent evaluation, with metrics used as reporting tools for that requirement.

Pinyan Qian, Su Wang, Yihang Chen et al. · 2 citations
Jun 2026

Experience Graphs: The Data Foundation for Self-Improving Agents

The database community has repeatedly advanced the state of the art by recognizing that new workloads demand new system architectures. We argue that long-horizon agentic tasks -- code generation, scientific discovery, hardware design -- are such a workload. These agents explore: they generate artifacts, execute tools,...

Gang Liao, Yujia He, Abdullah Ozturk et al. · 0 citations

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