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This paper proposed a post-refining method with fine contextual-dependent GMMs for the auto-segmentation task. A GMM trained with a super feature vector extracted from multiple evenly spaced frames near the boundary is suggested to describe the waveform evolution across a boundary. CART is used to cluster acoustically similar GMMs, so that the GMM for each(More)
—Dynamic resource allocation is a key technique that can significantly improve the performance of next generation wireless systems under guaranteed QoS to users. Most of the current resource allocation algorithms are, however, limited to unicast traffics. In practice, how to efficiently allocate various resources in multicast wireless systems is not known.(More)
The spread and resonance of users' opinions on SinaWeibo, the most popular micro-blogging website in China, are tremendously influential, having significantly affected the processes of many real-world hot social events. We select 21 hot events that were widely discussed on SinaWeibo in 2011, and do some statistical analyses. Our main findings are that (i)(More)
—Node cooperation is an emerging and powerful solution that can overcome the limitation of wireless systems as well as improve the capacity of the next generation wireless networks. By forming a virtual antenna array, node cooperation can achieve high antenna and diversity gains by using several partners to relay the transmitted signals. There has been a(More)
1Abstract-The IEEE Standard 802.16 supports for creating wireless mesh networks. The primary advantage of mesh networks is an improvement of capacity by concurrent transmission in the wireless environment. Therefore, the degree of spatial reuse is very crucial to realize the full potential of such wireless mesh networks. In this paper, we investigate the(More)