How can i integrate PSO with the current SVM Classifier

Hello

I am working on "Sentiment classification of twitter data". I need to improve SVM for my current research work. I am thinking to optimize its parameters using PSO approach. Can anyone give me the code or any idea regrading integrating PSO in the current SVM node. I am using simple SVM algorithm fron KNIME sources and not the SVM improved using SMO approach.

Thankyou!