Displaying 4 results from an estimated 4 matches for "adaptthresh".
2006 Apr 27
0
pamr package: pamr.adaptthresh() error rates
Hi,
I was working on a classification problem using the pamr package. I used the pamr.adaptthresh() function to find the optimal accuracy of the classifier. I must not be doing it right, since it doesn't return the threshold values for optimum classification.
For example,if I run it on a dataset, I get the following result using pamr.adaptthresh():
predicted
true (1) (2)...
2006 Apr 27
0
package pamr: pamr.adaptthresh() error rates
Hi, I was working on a classification problem using the pamr package. I used the pamr.adaptthresh() function to find the optimal accuracy of the classifier. I must not be doing it right, since it doesn't return the threshold values for optimum classification. For example,if I run it on a dataset, I get the following result using pamr.adaptthresh(): predicted true (1)...
2006 Apr 27
0
package pamr: pamr.adapthresh() ---- Take 2!
Hi,
Sorry about the earlier formatting errors...
I was working on a classification problem using the pamr package. I used the pamr.adaptthresh() function to find the optimal accuracy of the classifier. I must not be doing it right, since it doesn't return the threshold values for optimum classification.
For example,if I run it on a dataset, I get the following result using pamr.adaptthresh():
predicted
true (1) (2)...
2006 Apr 27
1
scope of variable/object ?
...o functions.
The code that works is:
################### WORKS ###############
library(pamr)
set.seed(120)
x <- matrix(rnorm(1000*20),ncol=20)
y <- sample(c(1:4),size=20,replace=TRUE)
mydata <- list(x=x,y=y)
mytrain <- pamr.train(mydata)
new.scales <- pamr.adaptthresh(mytrain,ntries = 1)
########################################
But if I split the lines into two functions, then I get an error message that reads :
'Error in pamr.train(data = myd2, threshold = threshold, threshold.scale = all.scales[i+ : object "myd2" not found.'...