※ 引述《known (Allez!!)》之铭言：
: ※ 引述《xupx (patience)》之铭言：
: : The instruction of loading R Weka package said we need rJava package,
: : but I had a error message and loading process was failed. It shows
: : "错误在firstlib(which.lib.loc, package):
: : JAVA_HOME is not set
: : 错误在library(pkg,character.only = TRUE):
: : .First.lib failed for 'rJava'"
: : I tried to download the package again and installed but it did not work.
: : Does anyone have the same problem? Thanks a lot!
: I have encountered this problem
: I think maybe you have to install JAVA VM first
: you can find it at http://www.java.com/zh_TW/download/index.jsp
: by the way,
: It seems that there isn't any function use covering algorithm in rWeka...~"~
There is an implementation(Prism.java) in weka source code
(software used in textbook).