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conference paper

Scalable and Efficient Comparison-based Search without Features

Chumbalov, Daniyar  
•
Maystre, Lucas  
•
Grossglauser, Matthias  
July 16, 2020
Proceedings of the 37 International Conference on Machine Learning
37th International Conference on Machine Learning (ICML 2020)

We consider the problem of finding a target object t using pairwise comparisons, by asking an oracle questions of the form “Which object from the pair (i, j) is more similar to t?”. Objects live in a space of latent features, from which the oracle generates noisy answers. First, we consider the non-blind setting where these features are accessible. We propose a new Bayesian comparison-based search algorithm with noisy answers; it has low computational complexity yet is efficient in the number of queries. We provide theoretical guarantees, deriving the form of the optimal query and proving almost sure convergence to the target t. Second, we consider the blind setting, where the object features are hidden from the search algorithm. In this setting, we combine our search method and a new distributional triplet embedding algorithm into one scalable learning framework called LEARN2SEARCH. We show that the query complexity of our approach on two real-world datasets is on par with the non-blind setting, which is not achievable using any of the current state-of-the- art embedding methods. Finally, we demonstrate the efficacy of our framework by conducting an experiment with users searching for movie actors.

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Type
conference paper
Web of Science ID

WOS:000683178502010

Author(s)
Chumbalov, Daniyar  
Maystre, Lucas  
Grossglauser, Matthias  
Date Issued

2020-07-16

Publisher

JMLR-JOURNAL MACHINE LEARNING RESEARCH

Publisher place

San Diego

Published in
Proceedings of the 37 International Conference on Machine Learning
Total of pages

11

Series title/Series vol.

Proceedings of Machine Learning Research

Volume

119

Subjects

comparison-based search

•

active learning

•

triplet embedding

•

image retrieval

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
INDY1  
Event nameEvent placeEvent date
37th International Conference on Machine Learning (ICML 2020)

Online

July 13-18, 2020

Available on Infoscience
August 22, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/171039
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