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