Scan statistics for detecting a local change in variance for two-dimensional normal data

Autor: Bo Zhao, Joseph Glaz
Rok vydání: 2016
Předmět:
Zdroj: Communications in Statistics - Theory and Methods. 46:5517-5530
ISSN: 1532-415X
0361-0926
Popis: In this article scan statistics for detecting a local change in variance for two dimensional normal data are discussed. When the precise size of the rectangular window where a local change in variance has occurred is unknown, multiple and variable window scan statistics are proposed. A simulation study is presented to evaluate the performance of the scan statistics investigated in this article via comparison of power. A method for estimating the rectangular region where a change in variance has occurred and the size of the change in variance is also discussed.
Databáze: OpenAIRE