Order-preserving dimension reduction procedure for the dominance of two mean curves with application to tidal volume curves.

Abstract:

:The paper here presented was motivated by a case study involving high-dimensional and high-frequency tidal volume traces measured during induced panic attacks. The focus was to develop a procedure to determine the significance of whether a mean curve dominates another one. The key idea of the suggested method relies on preserving the order in mean while reducing the dimension of the data. The observed data matrix is projected onto a set of lower rank matrices with a positive constraint. A multivariate testing procedure is then applied in the lower dimension. We use simulated data to illustrate the statistical properties of the proposed testing procedure. Results on the case study confirm the preliminary hypothesis of the investigators and provide critical support to their overall goal of creating an experimental model of the clinical panic attack in normal subjects.

journal_name

Biometrics

journal_title

Biometrics

authors

Lee SH,Lim J,Vannucci M,Petkova E,Preter M,Klein DF

doi

10.1111/j.1541-0420.2007.00959.x

subject

Has Abstract

pub_date

2008-09-01 00:00:00

pages

931-9

issue

3

eissn

0006-341X

issn

1541-0420

pii

BIOM959

journal_volume

64

pub_type

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