Multivariate time series anomaly detection is critical in safety-critical domains such as industrial monitoring and financial systems. However, real-world time series are inherently non-stationary, with evolving data distributions driven by changing operational regimes and system dynamics. As a result, most existing me...
Qiuyang Li, Qian Ma, Zhong-Ming Yao et al.· Proceedings of the 32nd ACM...· 0 citations
Due to their increasingly large volumes, outsourcing of trajectory storage and querying to third-party service providers has become attractive. However, in such outsourced environments, service providers may return incorrect, e.g., incomplete, tampered, or invalid query results, making verifiability of query results an...
Zhongming Yao, Junchang Xin, Yumeng Song et al.· 0 citations
Multivariate time series anomaly detection is critical in safety-critical domains such as industrial monitoring and financial systems. However, real-world time series are inherently non-stationary, with evolving data distributions driven by changing operational regimes and system dynamics. As a result, most existing me...
Qiuyang Li, Q. Ma, Zhongming Yao et al.· Proceedings of the 32nd ACM...· 0 citations
The results show that tool failures can be recognized at the return boundary, but reliable diagnosis requires combining multiple signals, and likelihood-based signals clearly capture incomplete returns and some direct inconsistencies, while action-based signals reveal how strongly a failure changes the next decision.
Jiachen Xu, T. Pedersen, Zhongming Yao et al.· 0 citations
Graph-Constrained Joint Replay (GCJR) is proposed, which slices failure-relevant events from an execution dependency graph, constructs graph-feasible singleton and pair candidates, and verifies them by replay with paired clean counterparts, and is exact within its declared graph domain.
Bingbing Li, Yumeng Song, Zhongming Yao et al.· 0 citations
A Spectral-Aware Feature Alignment module to unify feature dimensionality and align cross-domain semantics in a community-aware manner and a Graph Diffusion Tokenized Transformer that constructs hybrid token sequences from local and global structural contexts for Transformer encoding, and applies diffusion-based refine...
Mo Li, Zhaosong Zhao, Linlin Ding et al.· Annual International ACM SIG...· 0 citations
It is argued the loop is indivisible, tune where and how tightly it may close, state eight structural failure modes as falsifiable predictions, and specify six governance modules that rebuild the authorization frame until it covers the loop, before the loop starts turning.
Xiao-Yu Zhang, Qiu-Ye Sun, Jiachen Xu et al.· 0 citations
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