Context and time sensitive profile builder

摘要

User ratings within an explicit profile for content attributes are collected in a contextual manner, by queries or other user interactions initiated in conjunction with presentation or execution of a selected content item. Upon detecting null or stale ratings associated with at least one attribute value for a selected content item, the user interaction requesting ratings is initiated during or sequentially following presentation or execution of the selected content item. The profile is thus populated over time, but with the user entering values in context with the content being rated and with the possibility of accommodating changes in the user's preferences over time.