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Yutaka Ishii

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Publications by Yutaka Ishii (bibliography)

2010

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Kamahara, Junzo, Nagamatsu, Takashi, Tada, Masashi, Kaieda, Yohei and Ishii, Yutaka (2010): Instructional Video Content Employing User Behavior Analysis: Time Dependent Annotation with Levels of Detail. In: Proceedings of the 2010 Conference on User Modeling, Adaptation and Personalization 2010. pp. 87-98.

“We develop a multimedia instruction system for the inheritance of skills. This system identifies the difficult segments of video by analyzing user behavior. Difficulties may be inferred by the learner's requiring more time to fully process a portion of video; they may replay or pause the video during the course of a segment, or play it at a slow speed. These difficult video segments are subsequently assumed to require the addition of expert, instructor annotations, in order to enable learning. We propose a time-dependent annotation mechanism, employing a level of detail (LoD) approach. This annotation is superimposed upon the video, based on the user's selected speed of playback. The LoD, which reflects the difficulty of the training material, is used to adapt whether to display the annotation to the user. We present the results of an experiment that describes the relationship between the difficulty of material and the LoDs.”

2004

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Watanabe, Tomio, Ogikubo, Masamichi and Ishii, Yutaka (2004): Visualization of Respiration in the Embodied Virtual Communication System and Its Evaluation. In International Journal of Human-Computer Interaction, 17 (1) pp. 89-102.

“A proposed embodied virtual communication system provides a virtual face-to-face communication environment in which two remote talkers can share embodied interaction by observing their interaction with two types of avatars. One is VirtualActor, a human avatar that represents talker communicative motion and respiratory motion. The other is VirtualWave, an abstract avatar that expresses human behavior and respiration by simplified wave motion. By using the system for the analysis by synthesis of embodied communication, the effectiveness of the visualization of respiration in VirtualActor and VirtualWave is demonstrated by the analysis of the entrainment of interaction and the sensory evaluation in remote communication.”

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