Abstract: Implementations set forth herein relate to assigning users to cohorts and generating assistant content for presenting to the user based on their respectively assigned cohort and to reduce user churn out. Each cohort can belong to a plurality of cohorts that vary according to the level of experience, proficiency, and/or engagement that a user has historically exhibited with respect to a particular application and/or feature. A user can be assigned to multiple cohorts in circumstances in which a user may be proficient with respect to certain features of an application but not other features. When a user is estimated to be churning out or otherwise disengaging with respect to a particular feature, assistant content associated with that particular feature can be generated and rendered at a particular time that may not distract the user and may result in further engagement with the particular feature.

Abstract: According to embodiments herein, real-time searching and discovery of topics, stories, events, and incidents may be based on location (a user's current location or a specified location) and time (the current time or a specified time, in the past, present, or future).