Hi,
I'm trying to use RWeka and followed the following example from the
RWeka manual.
===========## Use some example data.
w <- read.arff(system.file("arff","weather.nominal.arff",
package = "RWeka"))
## Identify a decision tree.
m <- J48(play~., data = w)
m
## Use 10 fold cross-validation.
e <- evaluate_Weka_classifier(m,
cost = matrix(c(0,2,1,0), ncol = 2),
numFolds = 10, complexity = TRUE,
seed = 123, class = TRUE)
e
summary(e)
e$details
===========
But executing "J48(play~., data = w)" generates the following error:
=====Error in .jnew("weka/core/Attribute", attname[i], .jcast(levels,
"java/util/List")) :
java.lang.NoSuchMethodError: <init>
=====
Can anybody help me to fix this problem?
Thanks!
