Multi-Party Privacy-Preserving Logistic Regression with Poor Quality Data Filtering for IoT Contributors

• Main Authors: Kennedy Edemacu, Jong Wook Kim
• Format: Article
• Language: English
• Published: MDPI AG 2021-08-01
• Series: Electronics
• Subjects: IoT; logistic regression; homomorphic encryption; multi-party; gradient similarity; data quality
• Online Access: https://www.mdpi.com/2079-9292/10/17/2049

Nowadays, the internet of things (IoT) is used to generate data in several application domains. A logistic regression, which is a standard machine learning algorithm with a wide application range, is built on such data. Nevertheless, building a powerful and effective logistic regression model requires large amounts of data. Thus, collaboration between multiple IoT participants has often been the go-to approach. However, privacy concerns and poor data quality are two challenges that threaten the success of such a setting. Several studies have proposed different methods to address the privacy concern but to the best of our knowledge, little attention has been paid towards addressing the poor data quality problems in the multi-party logistic regression model. Thus, in this study, we propose a multi-party privacy-preserving logistic regression framework with poor quality data filtering for IoT data contributors to address both problems. Specifically, we propose a new metric <i>gradient similarity</i> in a distributed setting that we employ to filter out parameters from data contributors with poor quality data. To solve the privacy challenge, we employ homomorphic encryption. Theoretical analysis and experimental evaluations using real-world datasets demonstrate that our proposed framework is privacy-preserving and robust against poor quality data.