A MULTIVARIATE GAUSSIAN PROCESS FACTOR MODEL FOR HAND SHAPE DURING REACH-TO-GRASP MOVEMENTS.
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ABSTRACT:
SUBMITTER: Castellanos L
PROVIDER: S-EPMC5510896 | biostudies-literature | 2015 Jan
REPOSITORIES: biostudies-literature
Publications
A MULTIVARIATE GAUSSIAN PROCESS FACTOR MODEL FOR HAND SHAPE DURING REACH-TO-GRASP MOVEMENTS.
Castellanos Lucia L Vu Vincent Q VQ Perel Sagi S Schwartz Andrew B AB Kass Robert E RE
Statistica Sinica 20150101 1
We propose a Multivariate Gaussian Process Factor Model to estimate low dimensional spatio-temporal patterns of finger motion in repeated reach-to-grasp movements. Our model decomposes and reduces the dimensionality of variation of the multivariate functional data. We first account for time variability through multivariate functional registration, then decompose finger motion into a term that is shared among replications and a term that encodes the variation per replication. We discuss variants ...[more]
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