search for: classfic

Displaying 3 results from an estimated 3 matches for "classfic".

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2006 Oct 30
0
how to combine imputed data-sets from mice for classfication
Dear R users I want to combine multiply imputed data-sets generated from mice to do classfication. However, I have various questions regarding the use of mice library. For example suppose I want to predict the class in this data.frame: data(nhanes) mydf=nhanes mydf$class="pos" mydf$class[sample(1:nrow(mydf), size=0.5*nrow(mydf))]="neg" mydf$class=factor(mydf$class) Fi...
2005 Feb 04
2
genetic algorithm
Hi, I am doing some research on feature selection for classfication problem using genetic algorithm in a wrapper approach. I am wondering if there is some package which is already built for this purpose. I was advised before about dprep package but I don't think it used GA there (if I am wrong, please correct me!) Thanks, Ed
2005 Jun 29
0
Random Forests theoretical question
I feel like a dope for asking this, but after reading various articles I'm still not quite sure I get it. What is the relationship or similarity between a "probability" prediction from a classfication random forest and a Bayesian posterior probability? Can they be considered similar, or would I need to take that probability and project it through a likelihood (I'm thinking, perhaps wrongly, of computing this from the confusion matrix) to get a posterior probability? Something about...