Abstract: There is provided a method that is performed while a host and a guest are using a conversational messaging interface. For a message thread, in response to receiving a guest message, the method computes a probability for guest issues by inputting feature vectors from the guest message to a guest issue detection model. In response to receiving a host message, the message computes a probability for host issues by inputting feature vectors from the host message to a host issue detection model. If the message thread includes particular keywords, and if the probability for the guest issues is above a guest issue predetermined threshold, the method includes providing alerts that is visible only to the guest. If the probability for the host issues is above a host issue predetermined threshold, the method also includes providing alerts that is visible only to the host.

Abstract: A method is provided for host management in an online marketplace. The method includes obtaining a property listing listed on the online marketplace. The method may also include providing a host management graphical user interface for managing co-hosts. If the property listing is associated with one or more co-hosts, the method includes displaying host detail affordances. In response to detecting a user selecting a host detail affordance corresponding to a co-host, the method includes displaying permissions, payouts, and activity log, for the co-host. If the property listing is not associated with co-hosts, the method includes displaying a co-host add option to add a co-host for the property listing. The method may also include, in response to detecting an input from the user, to select the co-host add option, allowing the user to specify a new co-host and associating the new co-host with the property listing.

Abstract: A cost-focused determination of whether to deliver an electronic advertisement or notice to a particular user can be made through a cumulative consideration of the predicted return on investment over each of a plurality of electronic channels. A plurality of channel-specific budget values are calculated for the user, one for each channel, each setting an upper spending limit for advertisement to the user over that channel based on the user's information and their activity on the channel. A global budget is calculated for the user using a weighted aggregation of the channel-specific values, information about the user and their activity with the advertiser, and consideration of “overlap” effects of advertising to the same user on several channels. When managing whether to deliver an advertisement over a channel, if the channel-specific value is lower than the global budget, the advertisement is delivered, and the global budget is decreased by a complementary amount.

Abstract: Systems and methods are provided to generate an actual number of search results, a total estimated number of search results based on historical search data in the online marketplace, and a conversion estimated number of search results for users who converted, for a given set of query parameters in an online marketplace.

Abstract: Various aspects of the subject technology relate to systems, methods, and machine-readable media for encoding video data. Various aspects may include identifying keyframes in a source video. Aspects may also include mapping differences between keyframes and consecutive frames in the source video into blocks. Aspects may also include generating an image including the blocks. Aspects may also include storing coordinates of the blocks in the image and corresponding source video information as metadata. Aspects may include compressing the image, the first keyframe, and the metadata into a single compressed file. Aspects may include reconstructing the source video for playback based on the image, keyframes, and metadata in the compressed file.

Abstract: A presentation service generates an audience interface for an electronic presentation. The audience interface may simulate an in-person presentation, including features such as a central presenter and seat locations for audience members. The audience members may select emotes which may be displayed in the audience interface. The emotes may indicate the audience members' opinion of the content being presented. The presentation service may enable chats between multiple audience members, grouping of audience members private rooms, and other virtual simulations of functions corresponding to in-person presentations.