In this article, we propose a novel class of multi-dimensional graphical models based on matrix decompositions of the precision matrices along each dimension. Our approach is a unified framework applicable to both directed and undirected decomposable graphs as well as arbitrary combinations of these. ...
Moreover, our proposed MD sparse models generalize the 1D sparse models and are flexible and adaptive to both homogeneous and inhomogeneous properties of MD signals. 机译:传统的合成/分析稀疏表示以一维(1D)方式对信号进行建模,其中将多维(MD)信号转换为一维矢量。一维建模无法在有限的计算资源和内存使用...
In this study three multi-dimensional precipitation models, the Waymire-Gupta-Rodriguez-Iturbe model (Waymireet al., 1984; hereafter the WGR model), the noise forced diffusive precipitation model (North and Nakamoto, 1989; hereafter the NFD model) and the Yoo-Valdes-North model (Yooet al., ...
摘要: Decision support systems use On-Line Analytical Processing and data mining to nd interesting information from large databases. Queries posed on such systems are quite complex and require di erent views of data. Analytical models need to capture the multi-...
Intrusion detection based on improved sparse denoising autoencoder. J Comput Appl. 2019;39(3):769–73. Google Scholar Download references Acknowledgements Zhang Yusheng is acknowledged for his consulting assistance and silent accompany provided to the first author of this manuscript....
an implicit BDF integration method72with attached KLU sparse solver was chosen.73The inner derivatives of the likelihood needed in gradient-based parameter estimation were computed via forward sensitivities supplied to the integration algorithm.74Numerical optimization was conducted using a trust-region base...
[7]. iCluster is a joint latent variable model for data integration. This method models the tumor subtypes as unobserved latent variables which are simultaneously estimated from the multiple data types [31]. For iCluster, we used the 5% features with the largest median absolute deviation for ...
A sparse representation of both global and local image information was embedded in a level set formulation for automated liver segmentation12. An automatic algorithm including initial process of a probabilistic atlas with the posteriori classification and following extraction based on level set was ...
Furthermore, the single-region simulation results are also similar to those from the 1D axial simulation with Bohm mobility, implying that the pseudo-2D scheme, even in its simplest single-region implementation, can obviate the need for ad-hoc transport models in PIC codes. We now look more ...
In a preferred embodiment, the first match function, and using both the first and second variation, is used during a coarse scan step during which the entire multidimensional search space is evaluated with a relatively sparse set of poses. Poses that are coarse peaks, specifically those at which...