DEFT: Efficient Fine-tuning of Diffusion Models by Learning the Generalised h-transform - Denker, Alexander; Vargas, Francisco; Padhy, Shreyas; Didi, Kieran; Mathis, Simon; Dutordoir, Vincent; Barbano, Riccardo; Mathieu, Emile; Komorowska, Urszula Julia; Lio, Pietro (Advances in Neural Information Processing Systems, 2024)