Fuzzy Information Entropy and Region Biased Matrix Factorization for Web Service QoS Prediction
This work addresses QoS prediction for internet service users, offering an incremental improvement by enhancing matrix factorization with local and non-interactive features.
The paper tackles the problem of predicting Quality of Service (QoS) values for web services by proposing a matrix factorization approach that incorporates user information entropy and region bias to capture local similarities and non-interactive effects, resulting in improved predictive performance over state-of-the-art methods at matrix densities of 5% to 20%.
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%.