Variational density peak clusteringSeismicity de-clustering is a crucial step in earthquake catalog analysis, essential for understanding earthquake patterns and assessing seismic hazards. Seismicity de-clustering is challenging due to complex geological structures, high spatial-temporal correlation between ...
For example, the application of data balancing techniques improves the PRAUC from 0.534 to a peak of 0.636. These observations are further illustrated in Fig. 6, which demonstrates that while data balancing techniques are beneficial for simpler classification methods, their impact on advanced models ...
A method of building electrical system fault diagnosis based on the combination of variational mode decomposition and mutual dimensionless indictor (VMD-MDI) and quantum genetic algorithm-support vector machine (QGA-SVM) is proposed. Firstly, the method decomposes the original signal through variational ...
In late 2016, the peak size was reported to be 1.1 Tbps [4]. It was the result of a DDoS attack consisting of multiple compromised IoT devices. In 2018, the peak size was reported by Cisco to have reached 1.7 Tbps, originating from a vulnerability in the memcached protocol [1], and ...
In order to identify fan bearing faults accurately, this paper proposes a fault diagnosis method based on improved variational mode decomposition and density peak clustering. First, the variational mode decomposition's modal number K and secondary penalty factor 伪 are chosen employing the improved ...
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This is because the NDVI value increases before the peak time and decreases after the peak but not necessarily in a symmetric fashion. Therefore, the asymmetric double-sigmoid function is a suitable candidate for the global approximation of the NDVI time series. A comparison between different ...
Step 1: Use adaptive VMD algorithm to decompose periodic narrowband signal, white noise signal and partial discharge signal into different intrinsic modal components. Step 2: Remove the component with the larger power according to the DFT power spectrum, and synthesize the remaining components. Step ...