| 摘要 |
Methods and systems are provided for managing online advertising. Advertisers can specify requirements or preferences relating to advertisement exposures. The requirements or preferences can include, during a period of time, a minimum number of users exposed to an advertisement or group of advertisements, a range of exposures per exposed user, an average number of exposures per exposed users and an allowed variation about the average. Advertisement serving planning and advertisement serving are facilitated based in part on the specified requirements or preferences.
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