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
ParameterIteration
TobiasMalbrecht
Moderator, Employee-RapidMiner, Member Posts: 295 
RM Product Management
Original message from SourceForge forum at
http://sourceforge.net/forum/forum.php?thread_id=2060418&forum_id=390413
Hello All,
I am having a problem in applying a ParameterIteration operator rather than GridParameterOptimization. When i check the
setup, i get the following error :
un 1, 2008 6:48:15 PM: Checking process setup...
P Jun 1, 2008 6:48:15 PM: Inner operators are ok.
P Jun 1, 2008 6:48:15 PM: Checking i/o classes...
P Jun 1, 2008 6:48:15 PM: [Error] ParameterSetWriter: ParameterSetWriter: ParameterSetWriter: Missing input: ParameterSet
P Jun 1, 2008 6:48:15 PM: [Error] There was 1 error.
I assume that the GridParameterOptimization operator outputs a ParameterSet, but the ParameterIteration operator does not. How can i solve this problem?
Many Thanks,
Harry
http://sourceforge.net/forum/forum.php?thread_id=2060418&forum_id=390413
Hello All,
I am having a problem in applying a ParameterIteration operator rather than GridParameterOptimization. When i check the
setup, i get the following error :
un 1, 2008 6:48:15 PM: Checking process setup...
P Jun 1, 2008 6:48:15 PM: Inner operators are ok.
P Jun 1, 2008 6:48:15 PM: Checking i/o classes...
P Jun 1, 2008 6:48:15 PM: [Error] ParameterSetWriter: ParameterSetWriter: ParameterSetWriter: Missing input: ParameterSet
P Jun 1, 2008 6:48:15 PM: [Error] There was 1 error.
I assume that the GridParameterOptimization operator outputs a ParameterSet, but the ParameterIteration operator does not. How can i solve this problem?
Many Thanks,
Harry
0
Answers
the ParameterIteration differs from the GridParameterOptimization in so far, as it does only repeatedly apply its inner operators without the intention to optimize the learning results by using different parameters. As a consquence it does not find a set of parameters which maximize the learning performance and hence it does not output a ParameterSet which could be written by the ParameterSetWriter. If you want to find such a set of optimal parameters you actually have to use an optimization operator such as the GridParameterOptimization or the EvolutionaryParameterOptimization.
Regards,
Tobias