论文标题
用于两分点顶点分裂的FPT算法
An FPT Algorithm for Bipartite Vertex Splitting
论文作者
论文摘要
两分图模拟了两个差异对象集之间的关系。它们具有广泛的应用程序,通常被视为2层图形,其中每组对象被视为两个平行水平线之一上的一组顶点(点),并且关系由连接相应顶点的两条线之间的边缘(简单曲线)表示。此类图纸中的常见目标之一是最大程度地减少该交叉数的数量,但是,计算在计算上很昂贵,并且可能仍会导致图纸有很多交叉点,以至于它们会影响图纸的可读性。我们考虑了一种通过拆分顶点来删除此类可视化的交叉口的方法,目标是找到要分开的最小顶点以获得平面图。我们表明,确定在$ k $中以$ k $的最多分裂后是否存在平面图是固定的参数。
Bipartite graphs model the relationship between two disjoint sets of objects. They have a wide range of applications and are often visualized as a 2-layered drawing, where each set of objects is visualized as a set of vertices (points) on one of the two parallel horizontal lines and the relationships are represented by edges (simple curves) between the two lines connecting the corresponding vertices. One of the common objectives in such drawings is to minimize the number of crossings this, however, is computationally expensive and may still result in drawings with so many crossings that they affect the readability of the drawing. We consider a recent approach to remove crossings in such visualizations by splitting vertices, where the goal is to find the minimum number of vertices to be split to obtain a planar drawing. We show that determining whether a planar drawing exists after splitting at most $k$ vertices is fixed parameter tractable in $k$.