Potential of psychological information to support knowledge discovery in consumer debt analysis

Ladas, Alexandros (2016) Potential of psychological information to support knowledge discovery in consumer debt analysis. PhD thesis, University of Nottingham.

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In this work, we develop a Data Mining framework to explore the multifaceted nature of consumer indebtedness. Data Mining with its numerous techniques and methods poses as a powerful toolbox to handle the sensitivity of these data and explore the psychological aspects of this social phenomenon. Thus, we begin with a series of transformations that deal with any inconsistencies the data may contain but more importantly they capture the essential psychological information hidden in the data and represent it in a new feature space as behavioural data. Then, we propose a novel consensus clustering framework to uncover patterns of consumer behaviour which draws upon the ability of cluster ensembles to reveal robust clusters from diffcult datasets. Our Homals Consensus, models successfully the relationships between different clusterings in the cluster ensemble and manages to uncover representative clusters that are more suitable for explaining the complex patterns of a socio-economic dataset. Finally under a supervised learning approach the behavioural aspects of consumer indebtedness are assessed.

In more detail, we take advantage of the exibility Neural Networks provide in determining their architecture in order to propose a novel Neural Network solution, named TopDNN, that can handle non-linearities in the data and takes into account the extracted behavioural knowledge by incorporating it in the model. All the above sketch an elaborate framework that can reveal the potential of the behavioural data to support Knowledge Discovery in Consumer Debt Analysis on one hand and the ability of Data Mining to supplement existing models and theories of complex and sensitive nature on the other.

Item Type: Thesis (University of Nottingham only) (PhD)
Supervisors: Aickelin, Uwe
Garibaldi, J.M.
Ferguson, Eamonn
Keywords: Machine Learning, Consumer Debt Analysis, Personality Psychology
Subjects: Q Science > QA Mathematics > QA 75 Electronic computers. Computer science
Faculties/Schools: UK Campuses > Faculty of Science > School of Computer Science
Item ID: 34070
Depositing User: Ladas, Alexandros
Date Deposited: 01 Nov 2016 13:54
Last Modified: 14 Oct 2017 13:34
URI: https://eprints.nottingham.ac.uk/id/eprint/34070

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