[R-pkgs] np 0.30-1 (nonparametric kernel smoothing methods for mixed data types) is available on CRAN...
User Jracine Jeffrey S. Racine
racinej at mcmaster.ca
Fri Jan 30 00:05:23 CET 2009
Dear R users,
Version 0.30-1 of the np package has been released and uploaded to CRAN.
The np package provides nonparametric kernel smoothing methods for mixed
data types. We encourage anyone using the package to upgrade to the
latest version.
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. 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
Note that version 0.30-0 and 0.30-1 provide some much needed
functionality and bug fixes to the package.
Changes from Version 0.30-0 to 0.30-1 [29-Jan-2009]
* predict now supports bandwidth, density, distribution, conbandwidth,
condensity, and condistribution objects
* Consistently allow predictions for categorical values outside of
support of training data
Note that predictions based upon unconditional density objects
defined over categorical variables that lie outside the support of
the training data may no longer be true probabilities (i.e., as
defined over the training data and the extended/augmented support --
their sum may exceed one) and may therefore require renormalization
by the user
* Fixed a numerical issue which could hinder npregbw()'s cross
validation with higher-order kernels
* Default nmulti in npplregbw() is now set correctly
* Fixed a bug with the ridging routine in npscoefbw(), added ridging to
npscoef
* Fixed trivial i/o issue with "Multistart 1 of" using npscoefbw()
Changes from Version 0.20-4 to 0.30-0 [15-Jan-2009]
* Added basic user-interrupt checking for all underlying C code so
that either <Ctrl-C> (Rterm) or the `STOP' icon (Rgui) will
interrupt all running processes. This has a number of desirable side
effects in addition to being able to interrupt C-based processes
including i) R no longer showing up as `not responding' under the
task manager (Windows) or the activity monitor (Mac OS X) and ii)
buffered output now being correctly displayed when using Rgui under
Windows and Mac OS X
Note that repeated interruption of large jobs can reduce available
memory under R - if this becomes an issue (i.e., you get a `cannot
allocate...' error under R) simply restart R (i.e., exit then run a
fresh R session)
* Added a function npseed() that allows the user to set/reset the
random seed for all underlying C routines
* Fixed a bug that caused npplregbw() to ignore any kernel options
for the regression of y on z
* Refined certain constants used in the normal-reference density
bandwidth rule for increased accuracy
* Moved from using the maximum likelihood estimate of variance
throughout to the degrees of freedom corrected estimate (all
variance estimates now change by the factor (n-1)/n)
Feedback, comments, bug reports, and suggestions for improvement are
always welcome.
Best regards,
Jeff Racine & Tristen Hayfield
--
Professor J. S. Racine Phone: (905) 525 9140 x 23825
Department of Economics FAX: (905) 521-8232
McMaster University e-mail: racinej at mcmaster.ca
1280 Main St. W.,Hamilton, URL:
http://www.economics.mcmaster.ca/racine/
Ontario, Canada. L8S 4M4
`The generation of random numbers is too important to be left to
chance.'
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