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Force-directed algorithms are devoted to creating network visualization that better meet aesthetic standards but rarely consider interactive requirements, making it difficult to place certain nodes with semantic clustering features together through interactive operations. To solve this problem, we realize the interactive semantic clustering visualization through implicit connection. The key steps...
We introduce a novel bags-of-features framework based on relative position descriptors, modeling both spatial relations and shape information between the pairwise structural subparts of objects. First, we propose a hierarchical approach for the decomposition of complex objects into structural subparts, as well as their description using the concept of Force Histogram Decomposition (FHD). Then, an...
Large scale network has the characteristics of large number of nodes and complex structure, which makes it difficult to display in limited space. The paper proposes an expandable community division method for network visualization. The method use community detection algorithm based on network modularity to detect the network node and greedy algorithm to find the maximum modularity community. Different...
Node occlusion and edge congestion problems, which are caused by the increasing scale and complexity of network, had become a hot spot in network visualization research. To solve the visual clutter problem in network, edges close to each other in network were bundled by curving them. A segmental forced-directed algorithm (FDA) simplification model and a community based compatible edge bundling network...
We propose a novel contrast enhancement method for dark images using the value gap expansion force (VGEF) and the sorted histogram equalization. Based on the observation that the inter-pixel relationship is analogous to the electrostatic force, we define the pixel field spread around each pixel and the pixel mass at each pixel position. We compute the VGEF exerted to a pixel by multiplying the pixel...
Micro-blogging is a new kind of online broadcast medium rising in latest years which is called weibo in China. Every day, weibo users are fed with a large number of incurious micro-blogs. They may also pay close attention to what celebrities concerned about, but they would rather roughly know the summary of micro-blogs the celebrities, however, they can't add attentions to all the celebrities' friends...
Most of the layout algorithms for clustered graphs have been designed to differentiate the groups within the graph, however they do not take into account the interactions between such groups. Identifying these interactions allows to understand how the different communities exchange messages or information, and allows the social network researcher to identify key actors, social roles and paths from...
Visualizing a cocitation network is an important technique employed by information scientists to illustrate the intellectual structure of a knowledge domain. A cocitation network is usually visualized by drawing an undirected arc between two articles that are cocited by other papers. The contextual information, i.e., information regarding papers citing these cocited articles, is suppressed and therefore...
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