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Qi Qi

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#machine learning Preprint May 2025

ChronoSteer: Bridging Large Language Model and Time Series Foundation Model via Synthetic Cross-Modal Alignment Dataset

ChronoSteer is a decoupled agentic framework that learns cross-modal alignment from synthetic paired supervision that achieves a 25.8% improvement in zero-shot prediction accuracy over its unimodal backbone, and outperforms prior state-of-the-art unimodal and multimodal ...

Chengsen Wang, Qi Qi, Zhong-Wen Rao et al. · 0 citations
2026

A Time–Frequency Multi-Task Framework for Network Monitoring and Anomaly Detection

Networked systems continuously generate heterogeneous time series, including Key Performance Indicator (KPI) streams, logs, and spectrum measurements, whose interpretation is essential for automated monitoring, diagnosis, and control. Existing analysis approaches either rely heavily on labeled data specific to each dep...

Qi Qi, Chengsen Wang, Xingyue Wang et al. · 0 citations
2025

Do LVLMs Truly Understand Video Anomalies? Revealing Hallucination via Co-Occurrence Patterns

This paper investigates LVLMs’ behavior in VAD from a visual-textual co-occurrence perspective, and proposes VAD-DPO, a direct preference optimization method supervised with counter-example pairs that enhances both anomaly detection and reasoning performance, particularly in scene-dependent scenarios.

Menghao Zhang, Huazheng Wang, Pengfei Ren et al. · 4 citations

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