Scandinavian Working Papers in Economics
Research Reports,
University of Gothenburg, Statistical Research Unit, School of Business, Economics and Law
No 2011:3: Methods and evaluations for surveillance in industry, business, finance, and public health
Marianne Frisén ()
Additional contact information
Marianne Frisén: Statistical Research Unit, Department of Economics, School of Business, Economics and Law, Göteborg University, Postal: Statistical Research Unit, Göteborg University, Box 640, SE 40530 GÖTEBORG
Abstract: An overview on surveillance in different areas is given. Even though methods have been developed under different scientific cultures, the statistical concepts can be the same. When the statistical problems are the same, progress in one area can be used also in other areas. The aim of surveillance is to detect an important change in an underlying process as soon as possible after the change has occurred. In practice, we have complexities such as gradual changes and multivariate settings. Approaches to handling some of these complexities are discussed. The correspondence between the measures for evaluation and the aims of the ap-plication is important. Thus, the choice of evaluation measure deserves attention. The com-monly used ARL criterion should be used with care.
Keywords: expected delay; gradual change; likelihood ratio; monitoring; multivariate surveillance
JEL-codes: C10
18 pages, February 10, 2011
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