The Altair Community is migrating to a new platform to provide a better experience for you. In preparation for the migration, the Altair Community is on read-only mode from October 28 - November 6, 2024. Technical support via cases will continue to work as is. For any urgent requests from Students/Faculty members, please submit the form linked here

"Weka J48 and Rapidminer W-J48 Different"

martynsmartyns Member Posts: 15 Maven
edited May 2019 in Help
Using the same dataset I ran WEKAs implementation of J-48 and then Rapidminers implementation of WEKAs J-48. WJ-48.

It could be expected that using the same dataset the same tree would be constructed but it is not.

Some parts are very nearly the same but differ but a small amount on a split or percent but other parts are structurally different.

I checked that the same default internal parameters were being used.

I have included two attachments visualising the same section of both trees.
Thanks!



[attachment deleted by admin]
Tagged:

Answers

  • haddockhaddock Member Posts: 849 Maven
    I'm not entirely sure that RapidMiner actually implement the WEKA operators, perhaps they just use the library, in which case you need to check that the RM version is exactly the same version as the WEKA version.

Sign In or Register to comment.