602 citations · 1.6k across the 24 of their papers we have counts for
7 papers · 1 filter
Scaled torus principal component analysis
Pavlos Zoubouloglou, Eduardo García-Portugués, J. S. Marron
A particularly challenging context for dimensionality reduction is multivariate circular data, i.e., data supported on a torus. Such kind of data appears, e.g., in the analysis of…
New Perspectives on Centering
Jack B. Prothero, Jan Hannig, J. S. Marron
Data matrix centering is an ever-present yet under-examined aspect of data analysis. Functional data analysis (FDA) often operates with a default of centering such that the vectors…
Functional Data Analysis of Amplitude and Phase Variation
J. S. Marron, James O. Ramsay, Laura M. Sangalli +1
The abundance of functional observations in scientific endeavors has led to a significant development in tools for functional data analysis (FDA). This kind of data comes with seve…
Significance Analysis for Pairwise Variable Selection in Classification
Xingye Qiao, Yufeng Liu, J. S. Marron
The goal of this article is to select important variables that can distinguish one class of data from another. A marginal variable selection method ranks the marginal effects for c…
Nested Nonnegative Cone Analysis
Lingsong Zhang, J. S. Marron, Shu Lu
Motivated by the analysis of nonnegative data objects, a novel Nested Nonnegative Cone Analysis (NNCA) approach is proposed to overcome some drawbacks of existing methods. The appl…
Statistical Significance of Clustering using Soft Thresholding
Hanwen Huang, Yufeng Liu, Ming Yuan +1
Clustering methods have led to a number of important discoveries in bioinformatics and beyond. A major challenge in their use is determining which clusters represent important unde…