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5 results for “from:shu zhang”

controlling for number of elements in each node of the tree in mvpart
shu zhang · Feb 29, 2008 · r-help

Still about the mvpart. Is there any way I can control for the number of elements in each node in the function mvpart? Specifically, how can I ask partition to ignore node with elements less than 10? Thanks! -Shu

barplot and pca plot in mvpart
Shu Zhang · Feb 29, 2008 · r-help

Hello, I'm using the R package called mvpart, which is about the multivariate regression trees. The function I wrote is: mrt1<- mvpart(coefmat~sChip+sScreen+sMem,data=mixdata, xv="pick", plot.add=TRUE,uniform=TRUE,which=4,all=TRUE...

barplot and pca plot in mvpart/rpart
shu zhang · Feb 29, 2008 · r-help

Hello, I'm using the R package called mvpart, which is about the multivariate regression trees. The function I wrote is: mrt1<- mvpart(coefmat~sChip+sScreen+sMem,data=mixdata, xv="pick", plot.add=TRUE,uniform=TRUE,which=4,all=TRUE...

handling big data set in R
shu zhang · Mar 2, 2008 · r-help

Hello R users, I'm wondering whether it is possible to manage big data set in R? I have a data set with 3 million rows and 3 columns (X,Y,Z), where X is the group id. For each...

handling big data set in R
shu zhang · Mar 2, 2008 · r-help

Hello R users, I'm wondering whether it is possible to manage big data set in R? I have a data set with 3 million rows and 3 columns (X,Y,Z), where X is the group id. For each...

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