G., A. ., S. S. . Rao, and K. . Chandrasekaran. “Application of Machine Learning in Movie Recommendation Using Harris Hawks Optimization and K-Means (HHO-K-Means) Clustering”. International Journal of Intelligent Systems and Applications in Engineering, vol. 11, no. 7s, July 2023, pp. 515-2, https://ijisae.org/index.php/IJISAE/article/view/2990.