[Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Xiulin Xie

[eoas-seminar at lists.fsu.edu]

"Online Monitoring of Air Quality Using PCA-Based Sequential Learning"

Xiulin Xie
Department of Statistics,
Florida State University (FSU)

Please feel free to forward/share this invitation with other groups/disciplines that might be interested in this talk/topic. All are welcome to attend.

NOTE: In-person attendance is requested in our 499 Dirac Science Library (DSL) Seminar Room. Zoom access is intended for external (non-departmental) participants only.

https://fsu.zoom.us/j/94273595552
Meeting # 942 7359 5552

🎦 Colloquium recordings will be made available here, https://www.sc.fsu.edu/colloquium<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.sc.fsu.edu%2Fcolloquium&data=05%7C02%7Csc-seminar-announce%40lists.fsu.edu%7C385275f685f442155ffc08ddef2220f8%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638929652032058371%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=%2BAWA%2Bos84Kx07yV%2FBGd9FKaGTq0wfh2ZbrIETW6ysek%3D&reserved=0>

Wednesday, Sep 10, 2025, Schedule:

* 3:00 to 3:30 PM Eastern Time (US and Canada)
☕ Nespresso & Teatime - 417 DSL Commons

* 3:30 to 4:30 PM Eastern Time (US and Canada)
🕟 Colloquium - 499 DSL Seminar Room


Abstract:
Air pollution surveillance is critically important for public health. To monitor a sequential process online, a major statistical tool is statistical process control (SPC) chart. However, traditional SPC charts are developed mainly for monitoring production lines in the manufacturing industry under the assumptions that process observations at different observation times are independent and identically distributed with a parametric (e.g., normal) distribution when the process is stable. Nevertheless, the air pollution and meteorological data would not satisfy these conditions due to serial correlation, seasonality, and other complex data structure. In this talk, we present our latest research on sequential monitoring of air quality over time. In particular, we propose a flexible method for sequential monitoring of high-dimensional dynamic processes with serially correlated data. The new method is based on nonparametric longitudinal modeling for describing the longitudinal pattern of the process under monitoring, principal component analysis for dimension reduction, and a sequential learning algorithm for developing an effective decision rule. Numerical studies and real data applications show that the proposed method works well.


Additional colloquium details can be found here,
https://www.sc.fsu.edu/news-and-events/colloquium/1878-colloquium-with-xiulin-xie-2025-09-10<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.sc.fsu.edu%2Fnews-and-events%2Fcolloquium%2F1878-colloquium-with-xiulin-xie-2025-09-10&data=05%7C02%7Csc-seminar-announce%40lists.fsu.edu%7C385275f685f442155ffc08ddef2220f8%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638929652032072337%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=H0hKEUEnM6JiD%2BcE3qw9oS2gWmGeu9v0f9%2FabEQzPYs%3D&reserved=0>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.fsu.edu/pipermail/eoas-seminar/attachments/20250908/00f9ea45/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/calendar
Size: 5229 bytes
Desc: not available
URL: <http://lists.fsu.edu/pipermail/eoas-seminar/attachments/20250908/00f9ea45/attachment.ics>
-------------- next part --------------
_______________________________________________
SC-Seminar-announce mailing list
SC-Seminar-announce at lists.fsu.edu
https://lists.fsu.edu/mailman/listinfo/sc-seminar-announce