Search Results for author: Siavash Haghiri

Found 6 papers, 0 papers with code

Insights into Ordinal Embedding Algorithms: A Systematic Evaluation

no code implementations3 Dec 2019 Leena Chennuru Vankadara, Siavash Haghiri, Michael Lohaus, Faiz Ul Wahab, Ulrike Von Luxburg

However, there does not exist a fair and thorough assessment of these embedding methods and therefore several key questions remain unanswered: Which algorithms perform better when the embedding dimension is constrained or few triplet comparisons are available?

Representation Learning

LARGE SCALE REPRESENTATION LEARNING FROM TRIPLET COMPARISONS

no code implementations25 Sep 2019 Siavash Haghiri, Leena Chennuru Vankadara, Ulrike Von Luxburg

This problem has been studied in a sub-community of machine learning by the name "Ordinal Embedding".

Representation Learning

Estimation of perceptual scales using ordinal embedding

no code implementations21 Aug 2019 Siavash Haghiri, Felix Wichmann, Ulrike Von Luxburg

We propose to use ordinal embedding methods from machine learning to estimate the scaling function from the relative judgments.

Comparison-Based Framework for Psychophysics: Lab versus Crowdsourcing

no code implementations17 May 2019 Siavash Haghiri, Patricia Rubisch, Robert Geirhos, Felix Wichmann, Ulrike Von Luxburg

In this paper we study whether the use of comparison-based (ordinal) data, combined with machine learning algorithms, can boost the reliability of crowdsourcing studies for psychophysics, such that they can achieve performance close to a lab experiment.

BIG-bench Machine Learning

Comparison-Based Random Forests

no code implementations ICML 2018 Siavash Haghiri, Damien Garreau, Ulrike Von Luxburg

Assume we are given a set of items from a general metric space, but we neither have access to the representation of the data nor to the distances between data points.

General Classification regression

Comparison Based Nearest Neighbor Search

no code implementations5 Apr 2017 Siavash Haghiri, Debarghya Ghoshdastidar, Ulrike Von Luxburg

We consider machine learning in a comparison-based setting where we are given a set of points in a metric space, but we have no access to the actual distances between the points.

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