Package: npRmpi
Version: 0.50-1
Date: 2013-03-14
Depends: boot, cubature
Suggests: quantreg, MASS, parallel
Title: Parallel nonparametric kernel smoothing methods for mixed data
types
Author: Tristen Hayfield <hayfield@mpia.de>, Jeffrey S. Racine
<racinej@mcmaster.ca>
Maintainer: Jeffrey S. Racine <racinej@mcmaster.ca>
Description: This package provides a variety of nonparametric (and
semiparametric) kernel methods that seamlessly handle a mix of
continuous, unordered, and ordered factor data types. This
package is a parallel implementation of the np package based on
the MPI specification that incorporates the Rmpi package (Hao
Yu <hyu@stats.uwo.ca>) with minor modifications and we are
extremely grateful to Hao Yu for his contributions to the R
community. We would like to gratefully acknowledge support from
the Natural Sciences and Engineering Research Council of Canada
(NSERC:www.nserc.ca), the Social Sciences and Humanities
Research Council of Canada (SSHRC:www.sshrc.ca), and the Shared
Hierarchical Academic Research Computing Network
(SHARCNET:www.sharcnet.ca).
License: GPL
URL: https://github.com/JeffreyRacine/R-Package-npRmpi/
Packaged: 2013-03-14 17:56:43 UTC; jracine
NeedsCompilation: yes
Repository: CRAN
Date/Publication: 2013-03-14 19:24:13

Title: Non-Parametric Measures of Actigraphy Data
Description: Computes interday stability (IS), intraday variability (IV) & the relative amplitude (RA) from actigraphy data as described in van Someren et al. (1999). Additionally, it also computes L5 (i.e. the 5 hours with lowest average actigraphy amplitude) and M10 (the 10 hours with highest average amplitude) as well as the respective start times. The flex versions will also compute the L-value for a user-defined number of minutes. IS describes the strength of coupling of a rhythm to supposedly stable zeitgebers. It varies between 0 (Gaussian Noise) and 1 for perfect IS. IV describes the fragmentation of a rhythm, i.e. the frequency and extent of transitions between rest and activity. It is near 0 for a perfect sine wave, about 2 for Gaussian noise and may be even higher when a definite ultradian period of about 2 hrs is present. RA is the relative amplitude of a rhythm. For reliable results, actigraphy data should cover at least 7 days.