Displaying 3 results from an estimated 3 matches for "3levels".
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levels
2011 Dec 13
8
How to compute 95%CI for OR from logistic regression?
Hi all:
My data has 3 variables:
age(3levels : <30y=1 30-50y=2, >50y=3)
gender(Male=0, Female=1)
CD4 cell count(raw lab measurement)
y(1:death 0:alive)
I perform logistic regression to find out the factors that influence y.
result<-glm(y ~ factor(age) + factor(gender) + CD4,family = binomial)
>From the result,I can get OR...
2010 Jun 09
1
counting across leves of factors
I have dataframe with 17factors variables (for example every factor have
3levels)
I have maybe 5000 observation.
And i need to do table where is in every raw 1 of possible combination of
this factors and the numbur how many time is this combination in my dataset.
I wrote one code, but this is very slow and dumb.
it looks like this:
i<-0
for(i1 in levels(hivdat$pohl)){
a...
2017 Sep 02
0
problem in testing data with e1071 package (SVM Multiclass)
...<-subset(train,select=-V2)
>y <-V2 >model <-svm(V2 ~.,data =train,probability=TRUE)
>summary(model)
Call:svm(formula =V2 ~.,data =train,probability
=TRUE)Parameters:SVM-Type:C-classification SVM-Kernel:radial
cost:1gamma:0.08333333Numberof SupportVectors:12(444)Numberof
Classes:3Levels:maybe noyes
>pred <-predict(model,x)
>system.time(pred <-predict(model,x))
user system elapsed 000
>table(pred,y)y
|
|pred maybe noyes maybe 400no040yes 004>pred 123456789101112yes yes yes
yes nonononomaybe maybe maybe maybe Levels:maybe noyes|
||
I think it's ok until...