Qiaohui Zhang

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Eyesight and speech are two channels that humans naturally use to communicate with each other. However both the eye tracking and the speech recognition technique available today are still far from perfect. Our goal is find how to effectively make use of these error-prone information from both modes, in order to use one mode to correct errors of another(More)
The recognition errors make recognitionbased systems brittle, and lead to usability problems. Multimodal system is generally believed as an effective means ofbeing able to contribute to error avoidance and recovery. This work explores how to combine gaze and speech, which are two error-prone modes. in order to get a robust multimodal architecture. Combining(More)
This work explores how to use the gaze and the speech command simultaneously to select an object on the screen. Multimodal systems have long been a key mean to reduce the recognition errors of individual components. But the multimodal system generates errors as well. This present study tries to classify the multimodal errors, analyze the reasons causing(More)
The recognition ambiguity of a recognition-based user interface is inevitable. Multimodal architecture should be an effective means to reduce the ambiguity, and contribute to error avoidance and recovery, compared with a unimodal one. But does the multimodal architecture always perform better than the unimode at any time? If not, when does it perform better(More)
A 0.18 mum CMOS low noise amplifier (LNA) achieves sub-1 dB noise figure over more than an octave of bandwidth without external noise matching components. It is designed for a future radio telescope, requiring millions of cheap LNAs mounted directly on phased array antenna elements. The short distance between antenna and LNA and low frequency below 2 GHz(More)
Eyesight and speech are two channels that humans naturally use to communicate with each other. However both the eye tracking and the speech recognition technique existing are still far from perfect. This work explored how to integrate two (or more) error-prone sources of information on users' selection of objects in a visual interface. The implemented(More)
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