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Data partitioning is a fundamental step to achieve effective storage and query of RDF big data. This paper presents a balance RDF data partitioning algorithm based on hybrid hierarchical clustering (BRDPHHC), which combines AP and K-means clustering. BRDPHHC's functionality includes three aspects: (i) a pre-processing step combining nodes compression and nodes remove to reduce the scale of raw data...
Track-before-detect (TBD) is effective on weak target detection in passive bistatic radar (PBR). The probability of false alarm (PFA) and the probability of detection (PD) in TBD based on dynamic programming algorithm (DPA) are determined by threshold. The extreme value theory and generalized Pareto distribution are usually used to obtain the relationship between PD, PFA and threshold. However, DPA...
In this paper, a novel method for water/land segmentation is proposed based on the framework of geodesic distance. The proposed method models the water/land according to the statistics of both the speckle and land covers, which leads to a fast point-wised coarse segmentation. Based on the water/land models, the boundary area between water and land can be localized with automatically generated class...
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