How to use optimize parameter (Grid) for Text Clustering (K-Means)?
i tried using optimize parameter grid module for K Means but its not working. I dont know how to use it properly. i searched online but all i can find is for clasification algorithm.
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Yes. RapidMiner's Optimize Parameter operators are primarily meant for supervised learning methods (classification and regression).
Optimize Parameters expects a "performance vector". Usually this is coming from a cross-validation inside the optimization. But any operator that returns performances can be used.
Please check out the processes in the Samples repository, processes/07_Clustering.
Processes 08 and 09 show the usage of the Cluster Distance Performance operator.
This operator will deliver the necessary metric in your Optimize Parameters.
Regards,
Balázs