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1. A method for generating advertisements, the method comprising:
tracking, by a computer system, local purchases of a user within a home region of the user; selecting, by a computer system, first advertisements according to a first model trained according to the tracked local purchases of the user; transmitting, by a computer system, the first advertisements for display to the user; detecting, by the computer system, presence of the user outside of the home region; selecting, by the computer system, second advertisements according to a second model that is different from the first model upon detecting location of the user outside of the home region; and transmitting, by the computer system, the second advertisements for display to the user.
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