Mary Mae S. Pontillas, Dante L. Silva, Kevin Lawrence M. De Jesus. “Automated Prediction of Construction Project Efficiency Rating Using Multi-Layered Neural Network With Sigmoid Function”. International Journal of Advanced Science and Technology, Vol. 29, no. 08, June 2020, pp. 2631 -39, http://sersc.org/journals/index.php/IJAST/article/view/23441.