Dynamic injection of related content in search results
Systems and methods inject related content to a search result using a dwell score. For example, a method may include, for at least one result at least partially displayed in a viewport, calculating a dwell score for the result at based on an amount of time the result has been in the viewport and a position of the result in the viewport and, if the dwell score meets a threshold, displaying suggested links for the result in the viewport. Another example method includes displaying a scrollable set of search results in a viewport and, while waiting for a scroll action or link selection, calculating a dwell score for at least one result that has content visible in the viewport and updating ranking signals based on the dwell score. The updated ranking signals are used to generate a next set of search results for the query.