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With the ever increasing number of functional similar web services being made available on the Internet, how to leverage, aggregate and make use of individual component's quality of service(QoS) information to derive the optimal QoS of the composite service which meets the needs of users is still an ongoing hot research problem. In this paper, the current(More)
The Internet of Things has been widespread concerned in recent years. This paper introduces the concept and current status of Internet of Things technology, analyzes the key technologies in research, including RFID, sensor technologies, embedded intelligence and nanotechnology, and discusses the existing architecture. Finally, we proposed a new address(More)
Let e(x, y, λ) be the spectral function and χ λ the unit band spectral projection operator, with respect to the Laplace-Beltrami operator ∆M on a closed Riemannian manifold M. We firstly review the one-term asymptotic formula of e(x, x, λ) as λ → ∞ by Hörmander (1968) and the one of ∂ α x ∂ β y e(x, y, λ)|x=y as λ → ∞ in a geodesic normal coordinate chart(More)
In order to reduce computer storage requirements for kernel matrix and the computational costs for floating point operations in kernel machine learning, compactly supported radial basis function is used for kernel machine to construct sparse kernel matrix. This paper deals with evaluation and comparison of compactly supported radial basis function for(More)
Active learning and semi-supervised learning are both important techniques to improve the learned model using unlabeled data, when labeled data is difficult to obtain, and unlabeled data is available in large quantity and easy to collect. Combining active learning with a semi-supervised learning algorithm that uses Gaussian field and harmonic functions was(More)
We consider the following nonlinear Neumann problem:      ∆u − µu + u q = 0 in Ω, u > 0 in Ω, ∂u ∂ν = 0 on ∂Ω, where Ω ⊂ R n is a smooth and bounded domain, µ > 0 and ν denotes the outward unit normal vector of Ω. Lin and Ni (1986) conjectured that when q = n+2 n−2 , for µ small, all solutions are constants. We show that this conjecture is false for(More)