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Generalisations of stochastic supervision models

Lu, X., Qiao, Y., Zhu, R. ORCID: 0000-0002-9944-0369, Wang, G., Ma, Z. and Xue, J-H. (2021). Generalisations of stochastic supervision models. Pattern Recognition, 109, 107575.. doi: 10.1016/j.patcog.2020.107575

Abstract

When the labelling information is not deterministic, traditional supervised learning algorithms cannot be applied. In this case, stochastic supervision models provide a valuable alternative to classification. However, these models are restricted in several aspects, which critically limits their applicability. In this paper, we provide four generalisations of stochastic supervision models, extending them to asymmetric assessments, multiple classes, feature-dependent assessments and multi-modal classes, respectively. Corresponding to these generalisations, we derive four new EM algorithms. We show the effectiveness of our generalisations through illustrative examples of simulated datasets, as well as real-world examples of three famous datasets, the MNIST dataset, the CIFAR-10 dataset and the EMNIST dataset.

Publication Type: Article
Additional Information: © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Publisher Keywords: EM algorithms, Imperfect supervision, Finite mixture model, Stochastic supervision
Subjects: H Social Sciences > HA Statistics
H Social Sciences > HF Commerce > HF5601 Accounting
Q Science > QA Mathematics
Departments: Business School > Actuarial Science & Insurance
Date Deposited: 28 Sep 2020 10:15
URI: https://openaccess.city.ac.uk/id/eprint/24968
[img] Text - Accepted Version
This document is not freely accessible until 5 August 2021 due to copyright restrictions.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

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