Gestures for mixed-initiative news video browsing on mobile devices

Although small screen sizes and limited input methods are challenges for mobile devices, there are affordances like gestures and motion detection through on-device sensors. A prototype system has been implemented on a HTC Dream (T-Mobile G1) mobile phone demonstrating an "adaptive TV-channel" like mixed-initiative interface used to solicit user relevance feedback, provide recommendations and facilitate news video watching. The user is provided on-screen finger gesture operations to vote-up, vote-down or skip a video. Shaking the device resets the video sequence. This creates a cognitively palatable stream of videos and a seamless lower-latency user experience easily operated with one hand.