Disclosed in some examples are systems, methods, devices, and machine-readable mediums for providing information about the actual viewing audience of an online advertisement. When an online advertisement is displayed to a viewer, the online advertisement image may contain a tracking pixel pointing to a system which, when retrieved, causes a data object to be installed on the viewer's computer. Later, the viewer may return to the system as part of participation in an otherwise unrelated online survey. The system may recognize the data object, and insert questions related to the online advertisement in the survey.

A method for determining a condition under which a sign has been viewed includes receiving a uniform resource locator from a user endpoint device, where the uniform resource locator is embedded in a machine-readable code displayed on the sign, and extracting information from the uniform resource locator, where the information describes the condition under which the sign was viewed by a user of the user endpoint device. A method for transmitting information describing a condition under which a sign is currently viewable includes generating the information describing the condition under which the sign is currently viewable and inserting the information in a uniform resource locator, where the uniform resource locator is embedded in a machine-readable code displayed on the sign.

A social networking system dynamically adjusts a number of advertisements presented to a user along with organic content items by modifying a minimum bid amount associated with advertisements eligible for presentation to the user. Increasing the minimum bid amount decreases the number of advertisements presented to the user while decreasing the minimum bid amount increases the number of advertisements presented to the user. An engagement score measuring the user's estimated interaction with a content feed including organic content items without advertisements and an engagement score measuring the user's estimated interaction with a content feed including organic content items and advertisements are determined. A target score is determined based on the engagement scores, and a difference between the target score and a threshold value is used to modify a minimum price of advertisements eligible for presentation to the user.

An advertiser specifies an advertising campaign along with a budget, a duration and one or more objectives associated with the advertising campaign. An online system presenting advertisements from the advertising campaign determines an interval representing a portion of the duration, an interval budget, and one or more interval objectives. Historical information describing selection and presentation of advertisements by the online system is retrieved, and used to determine one or more filters limiting the number of opportunities to present an advertisement in which advertisements from the advertising campaign are included. The scaling filters may be based on the one or more interval objectives, bid amounts determined for advertisements in the advertising campaign, and bid amounts associated with advertisements previously selected for presentation form the historical data.

A wearable apparatus and method are provided for capturing image data. In one implementation, a wearable apparatus for capturing image data is provided. The wearable apparatus includes a plurality of image sensors for capturing image data of an environment of a user. Each of the image sensors is associated with a different field of view. The wearable apparatus also includes a processing device programmed to process image data captured by at least two of the image sensors to identify an object in the environment. The processing device is also programmed to identify a first image sensor, which has a first optical axis closer to the object than a second optical axis of a second image sensor. After identifying the first image sensor, the processing device is also programmed to process image data from the first image sensor using a first processing scheme, and process image data from the second image sensor using a second processing scheme.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for determining a number of unique viewers of a content item. In one aspect, a method includes receiving an identifier specifying characteristics of a user associated with a device that was used to present a given content item. A user category is identified for the received identifier based on the characteristics. Each user category of a set of user categories include a respective number of pseudo-users. The received identifier is assigned to a given pseudo-user in the identified user category based on a non-linear distribution of identifiers per actual user in the identified user category. A number of unique users, including the given pseudo-user, that have viewed the given content item is determined based on a total number of pseudo-users that have been assigned an identifier corresponding to presentation of the given content item.

An automatic system facilitates selection of media properties on which to display an advertisement, responsive to a profile collected on a first media property, where a behavioral-targeting company calculates expected profit for an ad correlated with the profile and arranges for the visitor to be tagged with a tag readable by the selected media property. The profit can be calculated by deducting, from the revenues that are expected to be generated from an ad delivered based on the collected profile, at least the price of ad space at a media property where the BT company might like to deliver ads to the profiled visitor. When the calculated profit is positive (i.e., not a loss), the BT company arranges for the visitor to be tagged with a tag readable by the selected media property through which the BT company expects to profit.

Methods, apparatus, systems and articles of manufacture to monitor media presentations are disclosed. An example apparatus includes a registrar, implemented by a processor, to receive demographic information from a user, to transmit the demographic information to a central facility, and to store a consent identifier in a pasteboard of the media device, the consent identifier accessible to a first instrumented application and a second instrumented application executed in a sandbox environment, the consent identifier to indicate to the first instrumented application and the second instrumented application that monitoring is allowed. The first instrumented application is to access the consent identifier from the pasteboard, present media, generate monitoring information if the consent identifier permits collection of monitoring information, not generate monitoring information if the consent identifier does not permit the collection of the monitoring information, and transmit the monitoring information to the central facility.

An online system receives a data stream of reported interaction events that resulted in each of a desired interaction with a content item. Each reported interaction event is associated with an attribution value defining a portion of a value of a desired interaction that is attributed to the interaction event. Using the attribution values, an attribution model is trained that determines an expected value of presenting the content item associated with the attribution model. The online system uses attribution models of a plurality of candidate content items to select content items for presentation to users of the online system.

The disclosed computer-implemented method for utilizing machine-readable code in image data for tracking data sharing may include (1) receiving, by a target computing device from a source computing device, image data in a graphical user interface, (2) identifying, by the target computing device, machine-readable code embedded in the image data, and (3) determining, by the target computing device, based on the embedded machine-readable code, one or more tracking metrics associated with sharing the image data. Various other methods, systems, and computer-readable media are also disclosed.