Search Results for author: Mikkel Thorup

Found 4 papers, 2 papers with code

Practical Hash Functions for Similarity Estimation and Dimensionality Reduction

1 code implementation NeurIPS 2017 Søren Dahlgaard, Mathias Bæk Tejs Knudsen, Mikkel Thorup

We find that mixed tabulation hashing is almost as fast as the multiply-mod-prime scheme ax+b mod p. Mutiply-mod-prime is guaranteed to work well on sufficiently random data, but we demonstrate that in the above applications, it can lead to bias and poor concentration on both real-world and synthetic data.

Dimensionality Reduction

Consistent Hashing with Bounded Loads

1 code implementation3 Aug 2016 Vahab Mirrokni, Mikkel Thorup, Morteza Zadimoghaddam

Designing algorithms for balanced allocation of clients to servers in dynamic settings is a challenging problem for a variety of reasons.

Data Structures and Algorithms

Heavy hitters via cluster-preserving clustering

no code implementations5 Apr 2016 Kasper Green Larsen, Jelani Nelson, Huy L. Nguyen, Mikkel Thorup

Our main innovation is an efficient reduction from the heavy hitters to a clustering problem in which each heavy hitter is encoded as some form of noisy spectral cluster in a much bigger graph, and the goal is to identify every cluster.

Clustering

How to Cut Corners and Get Bounded Convex Curvature

no code implementations7 Mar 2016 Mikkel Abrahamsen, Mikkel Thorup

A region of points in the plane $Q$ has \emph{bounded convex curvature} if for any point $x\in\partial Q$, there is a unit disk $U$ and $\varepsilon>0$ such that $x\in \partial U$ and all points in $U$ within distance $\varepsilon$ from $x$ are in $Q$.

Computational Geometry

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