Computer systems, methods, and storage media for tailoring a user interface to a user according to a determined user state and a determined interface context corresponding to the determined user state. The user interface is tailored by modifying the format of at least a portion of the interface, including modifying the content, layout of the content, presentation sequence, or visual display of the interface. A user interface includes a selectable formatting object for controlling the formatting of the user interface and for generating feedback data for training an ensemble learning component to enable more effective predictive formatting changes.