"Feature selection to improve accuracy."
hammadalam89
Member Posts: 8 
Contributor II
Hi,
I am doing sentiment analysis on news articles. But when I train my data, I am unable to get accuracy more than 64% by using SVM algorithm. For that improvement, I must have to focus on Feature Selection.
What are that features which are present in Rapidminer6 for feature selection ? What can I do for that ?
I am doing sentiment analysis on news articles. But when I train my data, I am unable to get accuracy more than 64% by using SVM algorithm. For that improvement, I must have to focus on Feature Selection.
What are that features which are present in Rapidminer6 for feature selection ? What can I do for that ?
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Answers
There are various operators in the group Data Transformation->Attribute Set Reduction and Transformation->Selection->Optimization
Optimize Selection does a forward or backward selection and Optimize Selection (Evolutionary) uses a genetic algorithm approach.
regards
Andrew