Fuzzy Information Entropy and Region Biased Matrix Factorization for Web Service QoS Prediction

TL;DR

This paper introduces a novel matrix factorization method for QoS prediction that leverages fuzzy information entropy and region bias to better capture local similarities and non-interactive effects, improving accuracy in complex environments.

Contribution

It proposes a new matrix factorization approach incorporating fuzzy information entropy and region bias, addressing limitations of global similarity focus in existing methods.

Findings

Outperforms state-of-the-art methods in real-world datasets

Effective at matrix densities from 5% to 20%

Improves prediction accuracy in complex network environments

Abstract

Nowadays, there are many similar services available on the internet, making Quality of Service (QoS) a key concern for users. Since collecting QoS values for all services through user invocations is impractical, predicting QoS values is a more feasible approach. Matrix factorization is considered an effective prediction method. However, most existing matrix factorization algorithms focus on capturing global similarities between users and services, overlooking the local similarities between users and their similar neighbors, as well as the non-interactive effects between users and services. This paper proposes a matrix factorization approach based on user information entropy and region bias, which utilizes a similarity measurement method based on fuzzy information entropy to identify similar neighbors of users. Simultaneously, it integrates the region bias between each user and service linearly into matrix factorization to capture the non-interactive features between users and services. This method demonstrates improved predictive performance in more realistic and complex network environments. Additionally, numerous experiments are conducted on real-world QoS datasets. The experimental results show that the proposed method outperforms some of the state-of-the-art methods in the field at matrix densities ranging from 5% to 20%.