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Qinggang Zhang

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#artificial intelligence Preprint Sep 2026

Towards Reliable AI Data Scientists: Data Agents with Workflow Harnesses

Large language model agents are increasingly deployed for data-intensive work, yet reliable data analysis requires more than general-purpose reasoning and ad hoc tool augmentation. Data Agents, equipped with workflow harnesses, offer a promising paradigm for automating the end-to-end data science lifecycle. This paper...

Hua-Chi Zhou, Yu-Jing Zhang, Jia-He Du et al. · 0 citations
Preprint Aug 2026

Trajectory-Guided Forget-Recover Network for Continual LLM Unlearning

Machine unlearning aims to eliminate the influence of sensitive data on a model. In the real world, unlearning requests arrive continually, which gives rise to two challenges. First, an unlearning intervention may redistribute target-related computation across remaining pathways, allowing previously forgotten knowledge...

Zezheng Wu, Xinghe Cheng, Qinggang Zhang et al. · 0 citations
Jul 2026

HVM-GraphRAG: Holistic-View Multimodal Graph Retrieval-Augmented Generation on Complex Document

Question answering (QA) over complex documents requires models to retrieve and integrate evidence distributed across distant document regions and modalities. Multimodal GraphRAG provides a promising direction by organizing document evidence with graph structures. However, existing methods often suffer from unreliable c...

Xingbo He, Yi-Li Wang, Wenqi Fan et al. · 1 citation
Review Aug 2026

Graph Engineering in the Era of LLM Agents: From Individual Intelligence to System Intelligence

LLMs have evolved from language generators to autonomous agents capable of complex, long-horizon tasks. This evolution has produced paradigms including Prompt Engineering to elicit model capabilities, Context Engineering to manage information access, Harness Engineering to organize external tools and resources, and Loo...

Yuyuan Feng, Zhishang Xiang, Chao Yang et al. · 0 citations
#artificial intelligence Preprint Aug 2026

CrossModalQA: A Cross-modal and Multi-hop Benchmark for Multimodal Retrieval-augmented Generation

CrossModalQA is introduced, an open-domain benchmark for evaluating multimodal retrieval and reasoning over heterogeneous corpora and it is revealed that complete cross-modal retrieval contributes more to answer accuracy than generator scaling, while multi-image retrieval and reasoning remain the primary bottlenecks li...

Jia-Cheng Cai, Zi-Jin Hong, Zheng Yuan et al. · 0 citations
Review Jul 2026

Zero-Mem: Zero-Token Memory Operations for LLM Agents

The results show that structured agent memory need not generate an intermediate representation of the past, and Zero-Mem achieves competitive performance while eliminating LLM calls and LLM-token consumption from memory operations.

Yi-Lin Xiao, Zhe-Han Zhu, Yujing Zhang et al. · 1 citation
#artificial intelligence Preprint Aug 2026

Evaluating LLMs on Conversational Text-to-SQL under Chain Ambiguity and Intent Drift

TIDE-Bench is introduced, a benchmark for conversational text-to-SQL under chain ambiguity and intent drift evaluation, targeting two recurring patterns: chain ambiguity, where an underspecified question triggers layered clarification with conditional dependencies, and intent drift, where the user retracts and replaces...

Yu-Jia Liu, Jia-Yan Lin, Zijin Hong et al. · 0 citations

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