An intrusion detection method using multi-classifier fusion based on Principal Component Analysis (PCA) feature analysis is presented. Firstly
PCA is applied to network intrusion feature extraction. then
initial intrusion detection result is done by three KNN classifiers. Next
the last step is form final result by fusing these results using the D-S evidence theory. Experiment has been done on dataset in KDD-99 and the results show that the intrusion detection performances can be improved by fusion three classifiers.