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