search for: michailidi

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2011 Jul 07
0
Can't reproduce ada example
Dear R Users, I'm having trouble reproducing the results in Section 5.1 of Culp, M., Johnson, K., Michailidis, G. (2006). ada: an R Package for Stochastic Boosting Journal of Statistical Software, 16 They build and display a boosting model with the code: library("ada") n <- 12000 p <- 10 set.seed(100) x <- matrix(rnorm(n*p), ncol=p) y <- as.factor(c(-1,1)[as.numeric(apply(x^2, 1, s...
2002 Oct 10
4
Correspondence analysis/optimal scaling with ordinal variable
Dear R specialists, I have a multivariate statistics question that I want to submit to the R community (which conveys a very good statistical knowledge). I need to perform an optimal scaling based on a discrete variable and an ordinal variable. The discrete variable, Area, defines a geographical area. The ordinal variable, EducationLevel, describes the education level of individuals (the
2013 Aug 29
0
[linux-linus test] 18805: regressions - FAIL
...Elio Pettenò <flameeyes@flameeyes.eu> Dietmar Eggemann <dietmar.eggemann@arm.com> Dilip Daya <dilip.daya@hp.com> Dima Zavin <dima@android.com> Dimitri Sivanich <sivanich@sgi.com> Dimitrios Semitsoglou-Tsiapos <dimitrios.semitsoglou@gmail.com> Dimitris Michailidis <dm@chelsio.com> Dimitris N <ddarlac@gmail.com> Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Ding Tianhong <dingtianhong@huawei.com> Dinh Nguyen <dinguyen@altera.com> Dipen Dudhat <Dipen.Dudhat@freescale.com> Dirk Behme <dirk.behme@de.bosc...
2013 Aug 29
0
[linux-linus test] 18844: regressions - FAIL
...Elio Pettenò <flameeyes@flameeyes.eu> Dietmar Eggemann <dietmar.eggemann@arm.com> Dilip Daya <dilip.daya@hp.com> Dima Zavin <dima@android.com> Dimitri Sivanich <sivanich@sgi.com> Dimitrios Semitsoglou-Tsiapos <dimitrios.semitsoglou@gmail.com> Dimitris Michailidis <dm@chelsio.com> Dimitris N <ddarlac@gmail.com> Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Ding Tianhong <dingtianhong@huawei.com> Dinh Nguyen <dinguyen@altera.com> Dipen Dudhat <Dipen.Dudhat@freescale.com> Dirk Behme <dirk.behme@de.bosc...