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A diversified shared latent variable model for efficient image characteristics extraction and modelling
Xiong, Hao1; Tang, Yuan Yan2; Murtagh, Fionn3; Rutkowski, Leszek4,5; Berkovsky, Shlomo1
2021-01-15
Source PublicationNEUROCOMPUTING
ISSN0925-2312
Volume421Pages:244-259
Abstract

An object can be consisting of various attributes, such as illuminance, appearance, shape, orientation, etc. Separately extract these attributes has enormous value in visual effects modeling, attribute-specific retrieval and recognition. Essentially, these attributes can be fairly abstract and thus need labels to extract. However, sometimes the labels of these attributes may not be available with training data. A solution to this problem is projecting the observed data into a lower dimension latent subspace, such that each observed data can be represented by a latent variable. After that, the dimensions of a latent variable can be segmented into different parts by weighting the kernel automatic relevance determination (ARD) parameters. Consequently, the latent variable is segmented into different parts each of which corresponds to the main attribute. In real life scenery, the attributes of an object may vary significantly from case to case. For instance, a single face can probably be under different illuminance conditions. Taking into account the diversity of these attribute variations, we propose the Diversified Shared Latent Variable Model (DSLVM) to extract and manipulate object attributes in an unsupervised way. More specifically, we initially set up two views that share the same latent variables. Then, two Diversity Encouraging (DE) priors are applied to the inducing points of each model view. Here, the inducing points are a small representative dataset that explains the observed data in its entirety. Meanwhile, the exploited diversity encouraging priors are able to cover more diverse characteristics of the attributes. The defined objective function is computed by variational inference. Extensive experiments on different datasets demonstrate that our method can accurately deal with various object.

KeywordDiversity-encouraging Prior Latent Variable Model Multi-view Learning Variational Inference
DOI10.1016/j.neucom.2020.09.035
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaComputer Science
WOS SubjectComputer Science
WOS IDWOS:000593102500006
Scopus ID2-s2.0-85092741594
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Document TypeJournal article
CollectionFaculty of Science and Technology
Corresponding AuthorXiong, Hao
Affiliation1.Australian Institute of Health Innovation, Macquarie University, North Ryde, 2113, Australia
2.Faculty of Science and Technology, University of Macau, Macau, 999078, China
3.Centre for Mathematics and Data Science, University of Huddersfield, United Kingdom
4.Institute of Computational Intelligence, Czesto-chowa University of Technology, Czestochowa, ul.Armii Krajowej 36, 42-200, Poland
5.Information Technology Institute, University of Social Sciences, Poland
Recommended Citation
GB/T 7714
Xiong, Hao,Tang, Yuan Yan,Murtagh, Fionn,et al. A diversified shared latent variable model for efficient image characteristics extraction and modelling[J]. NEUROCOMPUTING, 2021, 421, 244-259.
APA Xiong, Hao., Tang, Yuan Yan., Murtagh, Fionn., Rutkowski, Leszek., & Berkovsky, Shlomo (2021). A diversified shared latent variable model for efficient image characteristics extraction and modelling. NEUROCOMPUTING, 421, 244-259.
MLA Xiong, Hao,et al."A diversified shared latent variable model for efficient image characteristics extraction and modelling".NEUROCOMPUTING 421(2021):244-259.
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