Abstract: An online system identifies an opportunity to present content to a viewing user and sends candidate content items eligible for presentation to the viewing user for display to a client device associated with the viewing user. The online system computes an estimated value associated with presenting a candidate content item to the viewing user based at least in part on a bid amount associated with the candidate content item and communicates the value to a content-providing user associated with the candidate content item. Based on information received from the client device describing the placement of one or more candidate content items within a feed of content items presented to the viewing user, the online system calculates a detrimental effect of presenting the candidate content item on user engagement with the online system by the viewing user and computes an adjusted value associated with its presentation based on the detrimental effect.

Abstract: An advertising simulation system performs simulation of advertising results. The advertising results indicate the results of a simulated auction for a set of ad queries that are provided advertisements from available advertisements. The simulated auction applies an advertising model to perform an auction using advertising conditions. As advertisers are selected to provide advertisements to individual ad queries, advertising conditions, such as advertiser's bidding amounts, may change. To effectively simulate a large number of ad queries, the advertising segments simulation and performs simulation of each segment. Each segment's ad results may affect the conditions of a subsequent segment, and the change in conditions may change the size of a subsequent segment.

Abstract: The present disclosure is directed toward systems, methods, and computer-readable media that automatically detect and correct advertising exploits for an advertising campaign. For instance, one or more of the systems disclosed herein employs various metrics to automatically determine when an advertising campaign exceeds an exploit threshold. In addition, upon determining that an advertising campaign is an exploit campaign, one or more of the disclosed systems automatically throttles the execution of an advertising campaign until the exploit is corrected. For example, the disclosed system can modify one or more of the campaign parameters of the exploit campaign to limit placement of at least one future advertisement from the advertising campaign.

Abstract: An online system receives content items from publishing users for presentation to other users. When selecting content for presentation to users, the online system accounts for amounts of compensation from publishing users when presenting content items. To prevent publishing users from exploiting content selection by the online system to obtain disproportionate presentation of their content items relative to other publishing users, the online system generates an estimated amount of revenue from various publishing users from presenting their content items. The online system compares an amount of compensation received from a publishing user to the estimated amount of revenue from the publishing user, and generates clusters of content items from the publishing user for review if the amount of compensation is at least a threshold amount less than the estimated amount of revenue.

Abstract: An advertising simulation system performs simulation of advertising results. The advertising results indicate the results of a simulated auction for a set of ad queries that are provided advertisements from available advertisements. The simulated auction applies an advertising model to perform an auction using advertising conditions. As advertisers are selected to provide advertisements to individual ad queries, advertising conditions, such as advertiser's bidding amounts, may change. To effectively simulate a large number of ad queries, the advertising segments simulation and performs simulation of each segment. Each segment's ad results may affect the conditions of a subsequent segment, and the change in conditions may change the size of a subsequent segment.