Abstract: A computing system and method that can be used to surface a selectable action element for at least one ongoing task. In particular, the present disclosure provides a general pipeline to identify potential tasks that a user has an ongoing interest in or has not yet completed so that a suggestion of a content item can be made to further advance an identified user’s task. This pipeline can incorporate probabilistic transition graphs, machine-learned models, and/or historical data to determine the relevance and completion of tasks that a user may desire to continue acting upon.

Abstract: An optical device includes at least one optical waveguide including a plurality of elongate portions. Light propagates sequentially and generally along the elongate portions. At least two elongate portions of the plurality of elongate portions are generally planar with one another and are adjacent and generally parallel to one another. The at least two elongate portions are optically coupled to one another such that the light is coupled between the at least two elongate portions in a direction generally perpendicular to the at least two elongate portions as the light propagates generally along the at least two elongate portions.