Man Ki Lau

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In this paper, we study an interesting problem: continuously monitoring k-means clustering of sensor readings in a large sensor network. Given a set of sensors whose readings evolve over time, we want to maintain the k-means of the readings continuously. The optimization goal is to reduce the reporting cost in the network, that is, let as few sensors as(More)
The simulation of crowds of virtual characters is needed for applications such as films, games, and virtual reality environments. These simulations are difficult due to the large number of characters to be simulated and the requirement for synthesizing realistic human-like motion efficiently. This thesis focuses on two problems: how to search through and(More)
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