Abstract: The present disclosure relates to a system and method for capturing knowledge and interests of a user by conducting semantic knowledge capture, utilizing a real-time, or near real-time, viewport analysis. In an embodiment, the method comprises initializing a semantic knowledge capture session for the user; identifying the location of one or more objects in a loaded page being viewed by the user; determining whether the one or more objects are viewable through a view-port controllable by the user; and in dependence upon user events, tracking the occurrences of the one or more objects being viewable through the viewpoint in a tracking array, thereby to analyze the user's knowledge and interests in the one or more objects.