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Fr{\'e}chet and Hausdorff Queries on $x$-Monotone Trajectories | ||
Journal of Algorithms and Computation | ||
مقاله 2، دوره 51، شماره 2، اسفند 2019، صفحه 9-17 اصل مقاله (261.92 K) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22059/jac.2019.75110 | ||
نویسندگان | ||
Zeinab Saeidi1؛ Mohammad Farshi2 | ||
1Yazd University, Iran | ||
2Department of Mathematical Sciences, Yazd University, Yazd, Iran | ||
چکیده | ||
\vspace{0.2cm} In this paper, we design a data structure for the following problem. Let $\pi$ be an $x$-monotone trajectory with $n$ vertices in the plane and $\epsilon >0$. We show how to preprocess $\pi$ and $\epsilon$ into a data structure such that for any horizontal query segment $Q$ in the plane, one can quickly determine the minimal continuous fraction of $\pi$ whose Fr{'e}chet and Hausdorff distance to the horizontal query segment $Q$ is at most some threshold value $\epsilon$. We present a data structure for this query that needs $\mathcal{O}(n\log{}n)$ preprocessing time, $\mathcal{O}(n)$ space, and $\mathcal{O}(\log{} n)$ query time. & & \vspace{0.2cm} | ||
کلیدواژهها | ||
distance | ||
آمار تعداد مشاهده مقاله: 345 تعداد دریافت فایل اصل مقاله: 303 |