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Zi-Xuan Liu

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#machine learning Preprint Oct 2026

When Does Retrieval Help? A Study of In-Context Adaptation in Vision-Language-Action Models

Vision-language-action (VLA) models have shown strong potential as generalist robot policies, but adapting them to unseen tasks often requires costly parameter updates. Recent work such as RICL introduces in-context adaptability by retrieving expert demonstrations based on the current VLA observation and providing them...

Zi-Xuan Liu, J. Koster, Zizhan Zheng et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Distilling Vision-Language Models for On-Device Fire Understanding

A teacher-student knowledge distillation framework in which large VLMs fine-tuned for fire understanding can be distilled into lightweight students is developed, which provides broader guidance for deploying domain-specialized VLMs in resource-constrained, safety-critical settings.

Mohammad Kazzazi, Zi-Xuan Liu, S. Khajavi · 0 citations
Preprint Aug 2026

LycheeMemory V2: Efficient Long-Term Memory for LLM Agents via Semantic Segment-Level Consolidation

The results suggest that the accuracy--cost trade-off of long-term agent memory depends not only on what information is retained, but also on the granularity at which it is consolidated, and that the accuracy--cost trade-off of long-term agent memory depends not only on what information is retained, but also on the gra...

Dongfang Li, Zi-Xuan Liu, Junmai Wang et al. · 3 citations
Jul 2026

CAER: Conflict-Aware Evidence Routing with Dual Prefix Experts for Multimodal Large Language Models

CAER introduces a span-grounded evidence router that transforms claim representations into soft textual queries and retrieves corresponding evidence from frozen visual tokens, enabling fine-grained conflict estimation and design a dual-prefix expert routing mechanism that learns separate experts for visually supported...

Zi-Xuan Liu, Juntao Cai, Xiaoxu Cai et al. · 0 citations

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