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- W4321369069 abstract "The complexity of computing the flip distance between two triangulations of a simple convex polygon is unknown. Here we approach the problem from a parameterized complexity perspective and improve upon the 2k kernel of Lucas [12]. Specifically, we describe a kernel of size 4k3 and then show how it can be improved to (1+ϵ)k for every constant ϵ>0. By ensuring that the kernel consists of a single instance our result yields a kernel of the same magnitude (up to additive terms) for the almost equivalent rotation distance problem on rooted, ordered binary trees. The earlier work of Lucas left the kernel as a disjoint set of instances, potentially allowing very minor differences in the definition of the size of instances to accumulate, causing a constant-factor distortion in the kernel size when switching between flip distance and rotation distance formulations. Our approach avoids this sensitivity. We have also undertaken experiments to understand how much reduction is achieved by our kernel in practice." @default.
- W4321369069 created "2023-02-21" @default.
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- W4321369069 date "2023-08-01" @default.
- W4321369069 modified "2023-10-14" @default.
- W4321369069 title "An improved kernel for the flip distance problem on simple convex polygons" @default.
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- W4321369069 doi "https://doi.org/10.1016/j.ipl.2023.106381" @default.
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