CERSA: Cumulative Energy-Retaining Subspace Adaptation for Memory-Efficient Fine-Tuning. - Jingze Ge; Xue Geng; Yun Liu 011; Wanqi Dong; Wang Zhe Mark; Min Wu 008; Ngai-Man Cheung; Bharadwaj Veeravalli; Xulei Yang (CoRR, 2026)