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With the explosive growth of data, we have entered the era of big data. In order to sift through masses of information, many data mining algorithms using parallelization are being implemented. Cluster analysis occupies a pivotal position in data mining, and the DBSCAN algorithm is one of the most widely used algorithms for clustering. However, when the existing parallel DBSCAN algorithms create data...
A novel sparse representation-based method for two-dimensional (2-D) direction-of-arrival (DOA) estimation with L-shaped array is proposed. In our method, the 2-D DOA estimation is cast as a reconstituted problem of sparse matrix. The model for sparse-matrix reconstitution is first presented based on the cross-correlation matrix. Then an extended orthogonal matching pursuit (EOMP) algorithm is put...
This work investigates the problem of estimating the K frequency components of a mixture of complex sinusoids. Component frequencies of practical signals are not assumed to lie on a specified grid, but any values in the normalized frequency domain (0, 1). To estimate the off-grid frequencies, we apply the first Taylor expansion to approximate the true unknown dictionary and establish a more accurate...
We propose a novel two-dimensional (2-D) direction of-arrival (DOA) estimation method with automatic pair matching. Firstly, the DOAs of elevation angles can be estimated by the singular value decomposition (SVD) of the cross-correlation matrix. Then, we utilize the equation of the two transform matrices between the subspaces and array flow patterns which are corresponding to the elevation and azimuth...
The authors propose a novel direction-of-arrival (DOA) estimation method for signals that are uncorrelated, partially coherent or fully coherent in the presence of multipath propagation. First, uncorrelated and coherent signals are distinguished by the rotational invariance techniques as well as the property of the moduli of eigenvalues. The DOAs of the uncorrelated signals are then estimated based...
Topological optimization method and the force tracing method was applied to find a better form for the main component of the special feature of Taizhou Yangtze River Highway Bridge, a triple-pylon suspension bridge, which is under construction in China. Combining with other modeling methods, the landscape design of Taizhou Yangtze River Highway Bridge is carried out and the final scheme is adopted...
This paper describes a theory of image stabilization algorithm based on Region of Interest (ROI), to select effectual blocks. Using these blocks which contain edges and angular points to find the relative displacement of the near two frames will be easy and accurate, the amount of calculation will also be reduced. This article mainly discusses the rationale of this algorithm. The analysis of the first...
Urban residential suburbanization is a social issue which related to the country's stability, social development, and the immediate interests of ordinary people. In the background of our country which has such an accelerated development of urbanization, discussing this issue is with the urgency and necessity. This article attempted to propose some suitable strategies by observing the phenomenon, doing...
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