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Speech activity detection (SAD) is the key preprocess of speech application. This paper proposed a subspace Gaussian mixture model (SGMM) and phoneme combination based SAD algorithm. This algorithm is efficient, small and can utilize speech recognition corpus directly. Results indicate that, compared with the baseline, our proposed method results in an absolute improvement of 4.9% frame error rate...
Wireless sensor network (WSN) is energyconstrained, the data fusion techniques used in wireless sensor network can significantly reduce energy consumption and prolong the lifetime of network. In this paper, we study the optimization of performance data fusion in sensor network as a network utility maximization (NUM) problem, and we argue that energy need to be allocated for data transmission and fusion...
Current thermal comfort models (Fanger's model or adaptive thermal comfort model) predict thermal sensation in a steady state environment. There has been increasing interests in developing models of dynamic thermal sensation (DTS) due to transient environment conditions, e.g., sudden ambient temperature changes. In this paper, we develop a data-driven Hammerstein-Wiener (HW) model to characterize...
Traditional rough set of noise data, the lack of adaptability, lack of flexibility or robustness, for the engineering data can not distinguish between equivalence classes of edge region of overlap with the collection, resulting in loss of many valuable engineering information. Strong noise in the actual engineering data over-fitting due to reduced ability to distinguish the object, its limitations...
Nonlinear simulated annealing is introduced into two-dimensional magnetotelluric inversion in this paper. Adaptive regularization method is also adopted. Testing the algorithm on synthetic model shows the availability of simulated annealing regularized inversion method, which can obtain a stable solution closing to the fact.
Preference restraint cone data envelopment analysis model is recommended and extended to interval number case. A mew model for project selecting has been established based on preference restraint cone data envelopment analysis model and interval data envelopment analysis. The approach is illustrated by an example. It is shown that the introduced model is convenient for integrates decision-maker's...
Delay tolerant networks (DTNs) are wireless mobile networks that do not guarantee the existence of a path between a source and a destination at any time. When two nodes move within each other's transmission range during a period of time, they can contact each other. The contact of nodes can be periodical, predictable and nonpredictable. In this paper, we assume the contact of nodes is nonpredictable...
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