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An explainable federated learning and blockchain-based secure credit modeling method

Fan Yang Orcid Logo, Mohammad Abedin, Petr Hajek Orcid Logo

European Journal of Operational Research

Swansea University Author: Mohammad Abedin

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DOI (Published version): 10.1016/j.ejor.2023.08.040

Abstract

Federated learning has drawn a lot of interest as a powerful technological solution to the “credit data silo” problem. The interpretability of federated learning is a crucial issue due to the lack of user interaction and the complexity of credit data monitoring. We advocate the importance of a credi...

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Published in: European Journal of Operational Research
ISSN: 0377-2217
Published: Elsevier BV 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa64204
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spelling v2 64204 2023-08-31 An explainable federated learning and blockchain-based secure credit modeling method 4ed8c020eae0c9bec4f5d9495d86d415 Mohammad Abedin Mohammad Abedin true false 2023-08-31 BAF Federated learning has drawn a lot of interest as a powerful technological solution to the “credit data silo” problem. The interpretability of federated learning is a crucial issue due to the lack of user interaction and the complexity of credit data monitoring. We advocate the importance of a credit data processing-as-a-service model, which completes conventional credit models in local environments, in order to overcome these restrictions. In particular, we describe an explainable federated learning and blockchain-based credit scoring system (EFCS) in this work. First, we propose an explainable federated learning method with controllable machine learning efficiency and controllable credit model decision making, thus having controllable credit model complexity and transparent and traceable credit decision-making mechanism. Then, we suggest an explainable federated learning training mechanism for credit data that prevents leakage of the model gradients trained by individual nodes during the training of the overall model. Neither the credit data provider nor the data user has access to the raw data in the credit model training ecosystem. Therefore, privacy protection, model performance, and algorithm efficiency, the core triangular cornerstones of federated learning, when added with model interpretability, together constitute a more secure and trustworthy federated learning-based methodology, thus providing a more reliable service for credit model training and construction. The EFCS scheme is presented via simulations of different types of federated learning and their resistance to system attack, applying the proposed model to six different credit scoring datasets. Extensive experimental analyses support the efficiency, security, and explainability of the EFCS. Journal Article European Journal of Operational Research Elsevier BV 0377-2217 Analytics, Explainable federated learning, Privacy-preserving, Information leakage, Byzantine fault-tolerant 31 8 2023 2023-08-31 10.1016/j.ejor.2023.08.040 http://dx.doi.org/10.1016/j.ejor.2023.08.040 COLLEGE NANME Accounting and Finance COLLEGE CODE BAF Swansea University This research is supported by the Natural Science Basic Research Program of Shaanxi [Program No.2023-JC-YB-490]. This research is also supported by the Czech Sciences Foundation [grant number 22-22586S]; and the COST Action CA19130. 2024-02-27T10:54:11.4174154 2023-08-31T13:20:43.3018381 Faculty of Humanities and Social Sciences School of Management - Accounting and Finance Fan Yang 0000-0003-1842-1084 1 Mohammad Abedin 2 Petr Hajek 0000-0001-5579-1215 3 64204__28723__f796b00bbc8b4e3cacd68ee5178bf3a7.pdf 64204.AAM.pdf 2023-10-06T14:33:30.0659862 Output 1283891 application/pdf Accepted Manuscript true 2023-08-26T00:00:00.0000000 Author accepted manuscript document released under the terms of a Creative Commons CC BY-NC-ND licence. true eng https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en
title An explainable federated learning and blockchain-based secure credit modeling method
spellingShingle An explainable federated learning and blockchain-based secure credit modeling method
Mohammad Abedin
title_short An explainable federated learning and blockchain-based secure credit modeling method
title_full An explainable federated learning and blockchain-based secure credit modeling method
title_fullStr An explainable federated learning and blockchain-based secure credit modeling method
title_full_unstemmed An explainable federated learning and blockchain-based secure credit modeling method
title_sort An explainable federated learning and blockchain-based secure credit modeling method
author_id_str_mv 4ed8c020eae0c9bec4f5d9495d86d415
author_id_fullname_str_mv 4ed8c020eae0c9bec4f5d9495d86d415_***_Mohammad Abedin
author Mohammad Abedin
author2 Fan Yang
Mohammad Abedin
Petr Hajek
format Journal article
container_title European Journal of Operational Research
publishDate 2023
institution Swansea University
issn 0377-2217
doi_str_mv 10.1016/j.ejor.2023.08.040
publisher Elsevier BV
college_str Faculty of Humanities and Social Sciences
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hierarchy_top_id facultyofhumanitiesandsocialsciences
hierarchy_top_title Faculty of Humanities and Social Sciences
hierarchy_parent_id facultyofhumanitiesandsocialsciences
hierarchy_parent_title Faculty of Humanities and Social Sciences
department_str School of Management - Accounting and Finance{{{_:::_}}}Faculty of Humanities and Social Sciences{{{_:::_}}}School of Management - Accounting and Finance
url http://dx.doi.org/10.1016/j.ejor.2023.08.040
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description Federated learning has drawn a lot of interest as a powerful technological solution to the “credit data silo” problem. The interpretability of federated learning is a crucial issue due to the lack of user interaction and the complexity of credit data monitoring. We advocate the importance of a credit data processing-as-a-service model, which completes conventional credit models in local environments, in order to overcome these restrictions. In particular, we describe an explainable federated learning and blockchain-based credit scoring system (EFCS) in this work. First, we propose an explainable federated learning method with controllable machine learning efficiency and controllable credit model decision making, thus having controllable credit model complexity and transparent and traceable credit decision-making mechanism. Then, we suggest an explainable federated learning training mechanism for credit data that prevents leakage of the model gradients trained by individual nodes during the training of the overall model. Neither the credit data provider nor the data user has access to the raw data in the credit model training ecosystem. Therefore, privacy protection, model performance, and algorithm efficiency, the core triangular cornerstones of federated learning, when added with model interpretability, together constitute a more secure and trustworthy federated learning-based methodology, thus providing a more reliable service for credit model training and construction. The EFCS scheme is presented via simulations of different types of federated learning and their resistance to system attack, applying the proposed model to six different credit scoring datasets. Extensive experimental analyses support the efficiency, security, and explainability of the EFCS.
published_date 2023-08-31T10:54:08Z
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score 11.016593

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