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Location-based social networks (LBSNs) are attracting significant attentions, which make location-aware applications prosperous. We proposed the Multiple User-defined Spatial Query (MUSQ) in [1]. However, it is impractical that non-expert users provide exact vectors to denote their preferences in MUSQ. In this paper, we design a group users weight matrix generation algorithm to represent users' preferences...
Multiple user decision making is important in today's location-based service scenarios. Existing query services such as kNN and Skyline queries only consider single user and do not consider user's preferences. In this paper, we introduce a novel query type called multiple user-defined spatial queries (MUSQ), which return the best answers for a group of users considering both their locations and preferences...
We propose a scheme to utilize a multimode microdisk resonator in silicon controlled through free-carrier injection for continuous fast-to-slow light tuning. Two nearby resonant modes are employed, i.e., undercoupling and overcoupling. The optical properties of a device are analytically investigated considering the resonance spacing, bandwidth, and density change of free carriers. Pulse propagation...
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