Abstract: A real-time messaging platform allows advertiser accounts to pay to insert candidate messages into the message streams requested by account holders. To accommodate multiple advertisers, the messaging platform controls an auction process that determines which candidate messages are selected for inclusion in a requested account holder's message stream. Selection is based on a bid for the candidate message, the message stream that is requested, and a variety of other factors that vary depending upon the implementation. The process for selection of candidate messages generally includes the following steps, though any given step may be omitted or combined into another step in a different implementation: targeting, filtering, prediction, ranking, and selection.

Abstract: A messaging system automatically populates a stream of messages using only a seed selected by the requesting account holder. In one embodiment, the seed includes the streams of one or more of the “top” accounts of the messaging system. Here, “top” is according to any one of a number of different metrics stored in the messaging system. With knowledge of the seed, the messaging system automatically populates a stream for the requesting account holder, without requiring any other input. As a result, an account holder is provided with a fully functioning stream with very little effort or knowledge required on their part.

Abstract: Systems and methods for providing a message to a messaging platform include capturing, by a client device installed as a fixture at a location of a live event, media of a participant of the live event. Input is obtained from the participant by the client device. A message is created based on the input comprising the media and authored by a messaging platform account associated with the live event. The message is provided to a messaging platform for broadcasting to accounts associated with the account associated with the event.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for visibility filtering. One of the methods includes receiving a request for particular data on a social messaging platform; passing the request to one or more services, wherein each service is configured to call to data sources or to additional services to collect the particular data according to a request path defined for a type of request; performing visibility filtering at each service upon obtaining responses to calls made by that service, wherein performing visibility filtering at a service comprises calling a local visibility library that evaluates one or more rules with respect to the obtained response data, and wherein the results of the visibility filtering are passed upstream along the request path until a last service obtains all filtered response data; and assembling a final response to the request based on the filtered response data.

Abstract: A computing system can present a miniprofile comprising an avatar associated with a first account, a handle associated with the first account, a description associated with the first account, and a swipe icon; receive, at the swipe icon, an upward swipe; in response to receiving the upward swipe, present a occupying a larger portion of the display than the miniprofile, the full profile comprising an image associated with the first account, the avatar, the handle, the description, and at least a first post associated with the first account; receive, at the swipe icon, a downward swipe; determine that the downward swipe was a fast downward swipe; and based on determining that the downward swipe was the fast downward swipe, close the full profile and present a feed, the feed comprising at least a second post associated with a second account and a third post associated with a third account.

Abstract: A computing device is configured to execute an interactive streaming application, and the interactive streaming application configured to join a live broadcast of an event that is shared by an interactive video broadcasting service executing on a server computer, receive a first video stream having video captured from a camera device configured as a first video source and display the video on a display screen, receive a second video stream having panoramic video captured from a panoramic video capturing device configured as a second video source and display a portion of the panoramic video according to a first viewing angle on the display screen, receive a change to the first viewing angle of the panoramic video, and display another portion of the panoramic video according to a second viewing angle.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for processing data in a multi-tenant system. One of the methods includes receiving a data processing job associated with a user account of a user; determining to launch the data processing job on one or more cloud clusters of a cloud services provider; identifying a mirror account corresponding to the user, wherein the mirror account defines which cloud resources of the cloud services provider the user is permitted to access; obtaining a key for the mirror account; sending a request to launch the data processing job on the one or more cloud clusters, comprising sending data characterizing the data processing job, the mirror account of the user, and the obtained key to the one or more cloud clusters; and receiving output data associated with the data processing job from the one or more cloud clusters.

Abstract: A method of managing a display of applications on a computing device can include identifying a plurality of contexts in which the computing device is used, each context being associated with (i) one or more signals and (ii) a plurality of applications. The method can also include detecting at least a subset of the signals during usage of the computing device and determining, based on the detected signals, that the computing devices is being used within a first context. The method can further include ranking, based on usage of the computing device, the applications associated with the first context. The method can still further include displaying, based on the ranking, representations of a first subset of the applications associated with the first context on a display of the computing device.

Abstract: A system and message for message selection and presentation, including: receiving a request for content, wherein the request is associated with a context account of a messaging platform; identifying a set of unviewed messages associated with the context account; identifying grouping criteria for grouping content based on messages; applying, by a computer processor, the grouping criteria to the unviewed messages to generate a content group, wherein the content group is associated with a subset of the unviewed messages; and providing at least a portion of the content group in response to the request.

Abstract: According to an aspect, a method for event detection on social data streams includes receiving a stream of messages exchanged on a messaging platform, and detecting an event from the stream of messages, which may include detecting a first cluster group of trending entities over a first period of time, detecting a second group of trending entities over a second period of time, and generating a cluster chain by linking the second cluster group with the first cluster group, where the cluster chain represents the detected event over the first and second periods of time. The method includes storing the event as the cluster chain in a memory device on the messaging platform.

Abstract: Systems and methods provide an experimentation system, or testing engine, for a real-time search infrastructure. An example method includes generating a snapshot of a production search environment and performing testing of a signal or index change in the snapshot. The change can be specified as parameters passed to the system. The method may include estimating an impact of the change based on the testing and determining, based on the estimate, whether the impact is positive. Responsive to determining the impact is positive the method may include generating a holdback environment of the production search environment, the holdback environment being a portion of the production search environment selected not to receive the change, pushing the change to the production search environment, and monitoring the change by running partial production traffic through the holdback environment.

Abstract: Systems and methods select and provide video snippets in a matrix interface. Example methods include obtaining a portion of a live video stream, assigning the portion to a class, determining that the portion is preview-eligible, and generating a snippet of the live video stream using the portion. Other example methods include determining, using a trained video classifier, a set of live broadcasts that have at least one portion that is classified as preview-eligible, calculating, for each of the live broadcasts in the set, an aggregate score for the live broadcast, selecting live broadcasts with highest aggregate scores, generating a snippet for each of the selected live broadcasts, and providing the snippets in a user interface. Methods may also include selecting portions of live video streams that are responsive to a user-provided parameter and generating a snippet for each live video stream that has a preview-eligible portion.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for limiting load on host servers that implement a social messaging platform. An example user device sends, to a platform comprising a plurality of host servers, a first request. The request is directed to a first endpoint. The user device receives, in response to the first request, a first error that indicates that the first request was not processed. The user device determines a back off time and places subsequent requests to the platform that are initiated before the back off time elapses and that are directed to the first endpoint in a back off queue in an order in which the subsequent requests are initiated. The user device sends, to the platform, the requests in the back off queue after the back off time has elapsed, until the back off queue is empty.

Abstract: A system, method, and computer-readable medium for identifying music-related data based on message data from a messaging platform. The method includes: obtaining a request from a client; identifying context data associated with the request; identifying message data from the messaging platform based on the context data; selecting, based on the context data and the message data from the messaging platform, music-related data for inclusion in a result set; and providing the result set to the client in response to the request.

Abstract: An example system includes a processor and a memory. The system performs sub-pixel convolution that is free of checkerboard artifacts. In one example implementation, the system may execute a method that includes initializing one or more parameters of a sub-kernel of a kernel and copying the one or more parameters of the sub-kernel to other sub-kernels of the kernel. The method may further include performing convolution of an input image with the sub-kernels of the kernel and generating a plurality of first output images. A second output image is then generated based on the plurality of first output images.