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Full-Text Articles in Physical Sciences and Mathematics
Optimal Candidate Generation In Spatial Co-Location Mining, Zhongshan Lin
Optimal Candidate Generation In Spatial Co-Location Mining, Zhongshan Lin
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Existing spatial co-location algorithms based on levels suffer from generating extra, nonclique candidate instances. Thus, they require cliqueness checking at every level. In this thesis, a novel, spatial co-location mining algorithm that automatically generates co-located spatial features without generating any nonclique candidates at any level is proposed. Subsequently, this algorithm generates fewer candidates than other existing level-wise, co-location algorithms without losing any pertinent information. The benefits of this algorithm have been clearly observed at early stages in the mining process.
Simulation, Kriging, And Visualization Of Circular-Spatial Data, William James Morphet
Simulation, Kriging, And Visualization Of Circular-Spatial Data, William James Morphet
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The circular dataimage is defined by displaying direction as the color at the same direction in a color wheel composed of a sequence of two-color gradients with color continuity between gradients. The resulting image of circular-spatial data is continuous with high resolution. Examples include ocean wind direction, Earth's main magnetic field, and rocket nozzle internal combustion flow. The cosineogram is defined as the mean cosine of the angle between random components of direction as a function of distance between observation locations. It expresses the spatial correlation of circular-spatial data. A circular kriging solution is developed based on a model fitted …