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Feature selection for continuous aggregate response and its application to auto insurance data

Title
Feature selection for continuous aggregate response and its application to auto insurance data
Authors
Kang S.Song J.
Ewha Authors
송종우
SCOPUS Author ID
송종우scopus
Issue Date
2018
Journal Title
Expert Systems with Applications
ISSN
0957-4174JCR Link
Citation
vol. 93, pp. 104 - 117
Keywords
Aggregate dataAuto insuranceFeature selectionRisk assessmentTariff classification
Publisher
Elsevier Ltd
Indexed
SCIE; SCOPUS WOS scopus
Abstract
This paper presents new feature selection algorithms for aggregate data analysis. Data aggregation is commonly used when it is not appropriate to model the relationship between a response and explanatory variables at an individual-level. We investigate substantial challenges in analysis for aggregate data. Then, we propose a groupwise feature selection method that addresses (i) the change in dataset depending on the selection of predictor variables, (ii) the presence of potential missing responses, and (iii) the suitability of model selection criteria when comparing models using different datasets. In application to real auto insurance data, we find a set of important predictors to classify the policyholders into some homogeneous risk groups. Our results clearly demonstrate the potential of the proposed feature selection method for aggregate data analysis in terms of flexibility and computational complexity. We expect that the proposed algorithms would be further applied into a wide range of decision-making tasks using aggregate data as they are applicable to any type of data. © 2017 Elsevier Ltd
DOI
10.1016/j.eswa.2017.10.007
Appears in Collections:
자연과학대학 > 통계학전공 > Journal papers
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