My dataset contains missing data and I would like to do something like an EM algorithm or a Markov Chain Monte Carlo approach to get rid of the missing data. Is there a function for imputation or simulation of missing data apart from those in the randomForest library? Thanks in advance Birgit ----- The art of living is more like wrestling than dancing. (Marcus Aurelius) -- View this message in context: http://www.nabble.com/missing-data-imputation---simulation-tp17642736p17642736.html Sent from the R help mailing list archive at Nabble.com.
On 6/4/2008 5:32 AM, Birgitle wrote:> My dataset contains missing data and I would like to do something like an EM > algorithm or a Markov Chain Monte Carlo approach to get rid of the missing > data. > > Is there a function for imputation or simulation of missing data apart from > those in the randomForest library? > > Thanks in advance > > BirgitRSiteSearch("imputation", restrict="functions") RSiteSearch("{multiple imputation}", restrict="functions") return many relevant hits.> ----- > The art of living is more like wrestling than dancing. > (Marcus Aurelius)-- Chuck Cleland, Ph.D. NDRI, Inc. (www.ndri.org) 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894
Birgit, not knowing your data, I would recommend R-package "mice" or function aregImpute from R-package Hmisc as good multi-purpose tools. Regards, Ulrike -- View this message in context: http://www.nabble.com/missing-data-imputation---simulation-tp17642736p17643601.html Sent from the R help mailing list archive at Nabble.com.
Many thenks to both of you: Will have a look. Birgit Chuck Cleland wrote:> > On 6/4/2008 5:32 AM, Birgitle wrote: >> My dataset contains missing data and I would like to do something like an >> EM >> algorithm or a Markov Chain Monte Carlo approach to get rid of the >> missing >> data. >> >> Is there a function for imputation or simulation of missing data apart >> from >> those in the randomForest library? >> >> Thanks in advance >> >> Birgit > > RSiteSearch("imputation", restrict="functions") > > RSiteSearch("{multiple imputation}", restrict="functions") > > return many relevant hits. > >> ----- >> The art of living is more like wrestling than dancing. >> (Marcus Aurelius) > > -- > Chuck Cleland, Ph.D. > NDRI, Inc. (www.ndri.org) > 71 West 23rd Street, 8th floor > New York, NY 10010 > tel: (212) 845-4495 (Tu, Th) > tel: (732) 512-0171 (M, W, F) > fax: (917) 438-0894 > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > >----- The art of living is more like wrestling than dancing. (Marcus Aurelius) -- View this message in context: http://www.nabble.com/missing-data-imputation---simulation-tp17642736p17644180.html Sent from the R help mailing list archive at Nabble.com.