6 citations · 6 across the 9 of their papers we have counts for
7 papers · 1 filter
Practical Insertion-Only Convex Hull
Ivor van der Hoog, Henrik Reinstädtler, Eva Rotenberg
Convex hull data structures are fundamental in computational geometry. We study insertion-only data structures, supporting various containment and intersection queries. When is…
Simpler is Faster: Practical Distance Reporting by Sorting Along a Space-Filling Curve
Sarita de Berg, Emil Toftegaard Gæde, Ivor van der Hoog +2
Range reporting is a classical problem in computational geometry. A (rectangular) reporting data structure stores a point set , such that, given a (rectangular) query region …
Computing the Fréchet Distance When Just One Curve is -Packed: A Simple Almost-Tight Algorithm
Jacobus Conradi, Ivor van der Hoog, Thijs van der Horst +1
We study approximating the continuous Fréchet distance of two curves with complexity and , under the assumption that only one of the two curves is -packed. Driemel, Har{-…
A Combinatorial Proof of Universal Optimality for Computing a Planar Convex Hull
Ivor van der Hoog, Eva Rotenberg, Daniel Rutschmann
For a planar point set , its convex hull is the smallest convex polygon that encloses all points in . The construction of the convex hull from an array containing i…
Instance-Optimal Imprecise Convex Hull
Sarita de Berg, Ivor van der Hoog, Eva Rotenberg +2
Imprecise measurements of a point set P = (p1, ..., pn) can be modelled by a family of regions F = (R1, ..., Rn), where each imprecise region Ri contains a unique point pi. A retri…
Efficient Greedy Discrete Subtrajectory Clustering
Ivor van der Hoog, Lara Ost, Eva Rotenberg +1
We cluster a set of trajectories T using subtrajectories of T. Clustering quality may be measured by the number of clusters, the number of vertices of T that are absent from the cl…
Dynamic Indexing Through Learned Indices with Worst-case Guarantees
Emil Toftegaard Gæde, Ivor van der Hoog, Eva Rotenberg +1
Indexing data is a fundamental problem in computer science. Recently, various papers apply machine learning to this problem. For a fixed integer , a \emph{learned inde…