Search Results for author: Otmar Ertl

Found 6 papers, 6 papers with code

ProbMinHash -- A Class of Locality-Sensitive Hash Algorithms for the (Probability) Jaccard Similarity

3 code implementations2 Nov 2019 Otmar Ertl

This paper introduces a class of one-pass locality-sensitive hash algorithms that are orders of magnitude faster than the original approach.

Clustering

Computing Extremely Accurate Quantiles Using t-Digests

4 code implementations11 Feb 2019 Ted Dunning, Otmar Ertl

We present on-line algorithms for computing approximations of rank-based statistics that give high accuracy, particularly near the tails of a distribution, with very small sketches.

Sequential Quantile Estimation Computation Data Structures and Algorithms

BagMinHash - Minwise Hashing Algorithm for Weighted Sets

2 code implementations12 Feb 2018 Otmar Ertl

Minwise hashing has become a standard tool to calculate signatures which allow direct estimation of Jaccard similarities.

Data Structures and Algorithms

New Cardinality Estimation Methods for HyperLogLog Sketches

1 code implementation20 Jun 2017 Otmar Ertl

This work presents new cardinality estimation methods for data sets recorded by HyperLogLog sketches.

Data Structures and Algorithms

SuperMinHash - A New Minwise Hashing Algorithm for Jaccard Similarity Estimation

1 code implementation18 Jun 2017 Otmar Ertl

This paper presents a new algorithm for calculating hash signatures of sets which can be directly used for Jaccard similarity estimation.

Data Structures and Algorithms

New cardinality estimation algorithms for HyperLogLog sketches

1 code implementation4 Feb 2017 Otmar Ertl

This paper presents new methods to estimate the cardinalities of data sets recorded by HyperLogLog sketches.

Data Structures and Algorithms 68W15, 68W25, 62-07 E.1; I.1.2; H.2.8

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