FusionNet-FR: a DualNet transformer architecture using frequency modeling and relational learning for enhanced long-term time series forecasting. - Ary Mazharuddin Shiddiqi; Andika Laksana Putra; Ratih Nur Esti Anggraini; Farrela Ranku Mahhisa; Arif Bramantoro; Fayruz Rahma; Ahmad A. Alzahrani (PeerJ Comput. Sci., 2026)