Ni J, Pandelea V, Young T, Zhou H, Cambria E. HiTKG: Towards Goal-Oriented Conversations via Multi-Hierarchy Learning. AAAI [Internet]. 2022 Jun. 28 [cited 2026 May 10];36(10):11112-20. Available from: https://ojs.aaai.org/index.php/AAAI/article/view/21360