{HEAD ~ The method} may further include maintaining a similarity matrix with {TAIL ~ entries} corresponding to the average profile similarity between two channels during a given time period 
{ HEAD ~ The method } may further include maintaining a similarity matrix with { TAIL ~ entries } corresponding to the average profile similarity between two channels during a given time period
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH