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Authors: Fabian Berns 1 and Christian Beecks 1 ; 2

Affiliations: 1 Department of Computer Science, University of Münster, Germany ; 2 Fraunhofer Institute for Applied Information Technology FIT, Sankt Augustin, Germany

Keyword(s): Bayesian Machine Learning, Gaussian Process, Data Modeling, Knowledge Discovery.

Abstract: Gaussian Process Models (GPMs) are widely regarded as a prominent tool for learning statistical data models that enable timeseries interpolation, regression, and classification. These models are frequently instantiated by a Gaussian Process with a zero-mean function and a radial basis covariance function. While these default instantiations yield acceptable analytical quality in terms of model accuracy, GPM retrieval algorithms automatically search for an application-specific model fitting a particular dataset. State-of-the-art methods for automatic retrieval of GPMs are searching the space of possible models in a rather intricate way and thus result in super-quadratic computation time complexity for model selection and evaluation. Since these properties only enable processing small datasets with low statistical versatility, we propose the Timeseries Automatic GPM Retrieval (TAGR) algorithm for efficient retrieval of large-scale GPMs. The resulting model is composed of independent sta tistical representations for non-overlapping segments of the given data and reduces computation time by orders of magnitude. Our performance analysis indicates that our proposal is able to outperform state-of-the-art algorithms for automatic GPM retrieval with respect to the qualities of efficiency, scalability, and accuracy. (More)

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Paper citation in several formats:
Berns, F. and Beecks, C. (2020). Large-scale Retrieval of Bayesian Machine Learning Models for Time Series Data via Gaussian Processes. In Proceedings of the 12th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management (IC3K 2020) - KDIR; ISBN 978-989-758-474-9; ISSN 2184-3228, SciTePress, pages 71-80. DOI: 10.5220/0010109700710080

@conference{kdir20,
author={Fabian Berns. and Christian Beecks.},
title={Large-scale Retrieval of Bayesian Machine Learning Models for Time Series Data via Gaussian Processes},
booktitle={Proceedings of the 12th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management (IC3K 2020) - KDIR},
year={2020},
pages={71-80},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010109700710080},
isbn={978-989-758-474-9},
issn={2184-3228},
}

TY - CONF

JO - Proceedings of the 12th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management (IC3K 2020) - KDIR
TI - Large-scale Retrieval of Bayesian Machine Learning Models for Time Series Data via Gaussian Processes
SN - 978-989-758-474-9
IS - 2184-3228
AU - Berns, F.
AU - Beecks, C.
PY - 2020
SP - 71
EP - 80
DO - 10.5220/0010109700710080
PB - SciTePress

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