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Seminars

Integrating Explainable AI with Polynomial Analytics to Enhance Credit Scoring Model Compliance

  • 2024-02-26 (Mon.), 10:30 AM
  • Auditorium, B1F, Institute of Statistical Science;The tea reception will be held at 10:10.
  • Online live streaming through Cisco Webex will be available.
  • Prof. Huei-Wen Teng
  • Department of Information Management and Finance, National Yang Ming Chiao Tung University

Abstract

Adhering to the General Data Protection Regulation (GDPR) (Voigt and Von dem Bussche, 2017) in the European Unions and the Equal Credit Opportunity Act (ECOA) in the United States (Consumer Financial Protection Bureau, 2022), this paper enhances credit scoring models to fulfill both interpretability and accuracy criteria. Although Logistic Regression is known for its interpretability, its accuracy is often limited. We demonstrate that augmenting Logistic Regression with polynomial and interaction features substantially elevates its performance, making it competitive with, or even superior to, the XGBoost algorithm. This improvement, however, raises issues of multicollinearity and overfitting, which we mitigate through a Shapley value-based feature selection method. Experiments on synthetic and open-source datasets corroborate the e↵ectiveness of our enhanced Logistic Regression model. In contrast, XGBoost’s performance, in terms of AUC, plateaus with similar feature engineering, underscoring our model’s potential as a robust, precise, and interpretable credit scoring tool.
Keywords: Credit Scoring, polynomial and interaction features, Shapley Value, Feature Selection, XGBoost, Logistic Regression
JEL: C51, C52, C53, G21, C38

Please click here for participating the talk online.

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1130226 Prof. Huei-Wen Teng.pdf
Update:2024-02-20 15:50
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