18 citations · 30 across the 8 of their papers we have counts for
4 papers · 1 filter
Modelling multi-scale state-switching functional data with hidden Markov models
Evan Sidrow, Nancy Heckman, Sarah M. E. Fortune +3
Data sets comprised of sequences of curves sampled at high frequencies in time are increasingly common in practice, but they can exhibit complicated dependence structures that cann…
Model-based curve registration via stochastic approximation EM algorithm
Eric Fu, Nancy Heckman
Functional data often exhibit both amplitude and phase variation around a common base shape, with phase variation represented by a so called warping function. The process removing…
Switching nonparametric regression models for multi-curve data
Camila P. E. de Souza, Nancy E. Heckman, Helena Xu
We develop and apply an approach for analyzing multi-curve data where each curve is driven by a latent state process. The state at any particular point determines a smooth function…
Switching Nonparametric Regression Models and the Motorcycle Data revisited
Camila P. E. de Souza, Nancy E. Heckman
We propose a methodology to analyze data arising from a curve that, over its domain, switches among J states. We consider a sequence of response variables, where each response y de…