no code implementations • 1 Nov 2024 • Yousef El-Laham, Zhongchang Sun, Haibei Zhu, Tucker Balch, Svitlana Vyetrenko
We develop two methodologies for modeling and estimating change points in time-series data with distribution shifts.
no code implementations • 2 May 2024 • Zhongchang Sun, Sihong He, Fei Miao, Shaofeng Zou
Existing studies on constrained reinforcement learning (RL) may obtain a well-performing policy in the training environment.
no code implementations • 20 Dec 2023 • Zhongchang Sun, Yousef El-Laham, Svitlana Vyetrenko
Given a time series dataset, the proposed method jointly learns the unknown change points and the parameters of distinct neural SDE models corresponding to each change point.
no code implementations • 13 Oct 2023 • Zhongchang Sun, Shaofeng Zou
The data-driven setting where the disturbance signal parameters are unknown is further investigated, and an online and computationally efficient gradient ascent CuSum algorithm is designed.
no code implementations • 21 Oct 2022 • Qi Zhang, Zhongchang Sun, Luis C. Herrera, Shaofeng Zou
The WADD is at most of the order of the logarithm of the ARL.
no code implementations • 4 Sep 2022 • Zhongchang Sun, Shaofeng Zou
The goal of the fusion center is to detect the anomaly with minimal detection delay subject to false alarm constraints.
no code implementations • 23 Mar 2022 • Zhongchang Sun, Shaofeng Zou
For the Bayesian setting where the goal is to minimize the worst-case error probability, an optimal test is firstly obtained when the alphabet is finite.
no code implementations • 26 Feb 2022 • Zhongchang Sun, Shaofeng Zou, Ruizhi Zhang, Qunwei Li
The problem of quickest change detection (QCD) in anonymous heterogeneous sensor networks is studied.