In one embodiment, the digital video recorder includes a feature detector configured to derive a set of features from {HEAD ~ content} within {TAIL ~ a television commercial} 
within
In one embodiment , the digital video recorder includes a feature detector configured to derive a set of features from { HEAD ~ content } within { TAIL ~ a television commercial }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL