Abstract:
For an advertisement (“ad”) campaign including multiple ad requests, an advertiser may request presentation of a variety of ad requests in the ad campaign as well as specify an objective to be completed by the ad campaign during a time interval and subject to a budget. An online system presenting advertisement content may modify bid amounts associated with ad requests in the ad campaign using advertisement-specific bid adjustment values to select a more diverse range of ad requests from the ad campaign. To satisfy the objective without exceeding the budget, the online system also applies a pacing multiplier to bid amounts of ad requests selected from the ad campaign. As ad requests from the ad campaign are presented, the online system modifies the ad request-specific bid amounts and the pacing multiplier at different rates.