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Cartographers collect more data than they need, and so must simplify coastlines, boundaries, and other linear features to display a map at a given scale. Many simplification methods, however, can introduce intersections that were not originally present, corrupting the features. Kulik suggests a simple shortcut operation for polyg-onal lines: remove a point(More)
Clusters of Orthologous Groups (COGs) are a popular tool for identifying groups of genes in different genomes that may be derived from a common ancestor. In a graph whose edges represent mutually best-fit genes, one forms COGs of stringency m by merging m-cliques that overlap in (m − 1)-cliques, and reporting the resulting sets of vertices. The presence of(More)
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