Principal differential analysis of the Aneurisk65 data set

Matilde Dalla Rosa (), Laura Sangalli () and Simone Vantini ()

Advances in Data Analysis and Classification, 2014, vol. 8, issue 3, 287-302

Abstract: We explore the use of principal differential analysis as a tool for performing dimensional reduction of functional data sets. In particular, we compare the results provided by principal differential analysis and by functional principal component analysis in the dimensional reduction of three synthetic data sets, and of a real data set concerning 65 three-dimensional cerebral geometries, the AneuRisk65 data set. The analyses show that principal differential analysis can provide an alternative and effective representation of functional data, easily interpretable in terms of exponential, sinusoidal, or damped-sinusoidal functions and providing a different insight to the functional data set under investigation. Moreover, in the analysis of the AneuRisk65 data set, principal differential analysis is able to detect interesting features of the data, such as the rippling effect of the vessel surface, that functional principal component analysis is not able to detect. Copyright Springer-Verlag Berlin Heidelberg 2014

Keywords: Functional data analysis; Dimensional reduction; Principal differential analysis; Functional principal component analysis; 62H30; 62H25; 62P10 (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s11634-014-0175-5

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