With the growth of mobile phones, short message service (SMS) became an essential text communication service. However, low cost and ease use SMS led to increase in Spam. In this paper, characteristics spam has studied a set features introduced get rid spam. addition, problem detection was addressed as clustering analysis that requires metaheuristic algorithm find structures. Three differential ...

Differential operators can detect significant changes in signals. This has been utilized to enhance the contrast of the seizure signatures in depth EEG or ECoG. We have actually taken normalized exponential of absolute value of single or double derivative of epileptic ECoG. This in short we call differential filtering. Windowed variance operation has been performed to automatically detect seizu...