2 papers
stat.AP2020
Item Quality Control in Educational Testing: Change Point Model, Compound Risk, and Sequential Detection
Yunxiao Chen, Yi-Hsuan Lee, Xiaoou Li
In standardized educational testing, test items are reused in multiple test administrations. To ensure the validity of test scores, the psychometric properties of items should rema…
math.ST2019
Compound Sequential Change-point Detection in Parallel Data Streams
Yunxiao Chen, Xiaoou Li
We consider sequential change-point detection in parallel data streams, where each stream has its own change point. Once a change is detected in a data stream, this stream is deact…