Cloud computing provides an efficient way to expose computing capabilities as sophisticated services that can be accessed remotely. It eliminates the need for organizations to maintain extensive infrastructures. Paral...
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Selection bias, caused by preferential exclusion of units (or samples) from the data, is a major obstacle to valid causal inferences, for it cannot be removed or even detected by randomized experiments. This paper hig...
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The representative method of using morphological evidence for Chinese unknown word (UW) extraction is Chinese word segmentation (CWS) model, and the method of using distributional evidence for UW extraction is accesso...
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When charged with renewable energy, electric vehicles can reduce the CO_2 emissions of the transportation sector. As a result, the German government has set the target of one million electric vehicles by 2020. At the ...
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ISBN:
(纸本)9781467325950
When charged with renewable energy, electric vehicles can reduce the CO_2 emissions of the transportation sector. As a result, the German government has set the target of one million electric vehicles by 2020. At the same time, it is predicted that renewable energies will contribute 35% to the national energy consumption by 2020. Because photovoltaic systems can be connected to the same grid node as electric vehicles, they seem to be the first choice for charging electric vehicles with renewable energies. In this paper, the synergies between photovoltaic systems and electric vehicles will be analyzed from a technical as well as from an economic point of view. Specifically, a model has been developed in order to determine the amount of solar energy used by the electric vehicle, the grid load/feed-in and the cost savings for owners of an electric vehicle and a photovoltaic system.
Homophily and stochastic equivalence are two primary features of interest in social networks. Recently, the multiplicative latent factor model (MLFM) is proposed to model social networks with directed links. Although ...
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ISBN:
(纸本)9781577355120
Homophily and stochastic equivalence are two primary features of interest in social networks. Recently, the multiplicative latent factor model (MLFM) is proposed to model social networks with directed links. Although MLFM can capture stochastic equivalence, it cannot model well homophily in networks. However, many real-world networks exhibit homophily or both homophily and stochastic equivalence, and hence the network structure of these networks cannot be modeled well by MLFM. In this paper, we propose a novel model, called generalized latent factor model (GLFM), for social network analysis by enhancing homophily modeling in MLFM. We devise a minorization-maximization (MM) algorithm with linear-time complexity and convergence guarantee to learn the model parameters. Extensive experiments on some real-world networks show that GLFM can effectively model homophily to dramatically outperform state-of-the-art methods.
X-rays have been valuable to a large number of fields including science, Medicine, and Security. Yet, the availability of a compact high-spectral brilliance X-ray sources is limited. A technique to produce X-rays with...
X-rays have been valuable to a large number of fields including science, Medicine, and Security. Yet, the availability of a compact high-spectral brilliance X-ray sources is limited. A technique to produce X-rays with spectral brilliance ℬ ∼ 1012 photons.(mm-mrd)−2. (0.1% BW)−1.s−1 is discussed. The method is based on the generation and acceleration of a low-emittance field-emitted electron bunches. The bunches are then focused on a diamond crystal thereby producing channeling radiation. In this paper, after presenting the overarching concept, we discuss the generation, acceleration and transport of the low-emittance bunches with parameters consistent with the production of high-brilliance X-rays through channeling radiation. We especially consider the example of the Advanced Superconducting Test Accelerator (ASTA) currently in construction at Fermilab where a proof-of-principle experiment is in preparation.
Two methodological practices are well established in other scientific disciplines yet remain rare in computer-security research: comparative experiments and statistical inferences. Comparative experiments offer the on...
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This paper looks at the problem of designing wireless medium access algorithms. Inter-user interference at the receivers is an important characteristic of wireless networks. We show that decoding (or canceling) this i...
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This paper proposes and evaluates Self-Organizing Latency-Aware Resource Ensemble (SOLARE), a peer-to-peer self-organizing and self-managing cluster system based upon network coordinates and utility functions. In cont...
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We address the problem of define a modal defeasible theory able to capture intuitions as "being compliant" with a set of norms and a set of goals. We will treat norms and goals as modalised literals. From th...
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