Calibrating the Scan Statistic with Size-Dependent Critical Values

Guenther Walther ()
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Guenther Walther: Stanford University, Department of Statistics

Chapter 7 in Handbook of Scan Statistics, 2024, pp 105-119 from Springer

Abstract: Abstract It is known that the scan statistic with variable window size favors the detection of signals with small spatial extent and there is a corresponding loss of power for signals with large spatial extent. Recent results have shown that this loss is not inevitable: Using critical values that depend on the size of the window allows optimal detection for all signal sizes simultaneously, so there is no substantial price to pay for not knowing the correct window size and for scanning with a variable window size. This chapter gives a review of the heuristics and methodology for such size-dependent critical values, their applications to various settings including the multivariate case, and recent results about fast algorithms for computing scan statistics.

Keywords: Scan statistic; Scale-dependent critical values; Multiscale inference; Blocked scan; Bonferroni scan; Fast algorithm (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/978-1-4614-8033-4_59

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