Weighted distance grey wolf optimization with immigration operation for global optimization problems. - Duangjai Jitkongchuen; Warattha Sukpongthai; Arit Thammano (SNPD, 2017)

A preprocessing matrix factorization on collaborative filtering based library book recommendation system. - Chaloemphon Sirikayon; Panita Thusaranon; Warattha Sukpongthai (DSIT, 2018)

Handling Imbalanced Data Classification Problem using Artificial Immune System with Mahalanobis Distance. - Duangjai Jitkongchuen; Warattha Sukpongthai (SNPD, 2019)