Wang J, Gao Z, Dinggen Z, Xie Z. Escaping Optimization Stagnation: Taking Steps Beyond Task Arithmetic via Difference Vectors. AAAI [Internet]. 2026 Mar. 14 [cited 2026 May 19];40(31):26310-8. Available from: https://ojs.aaai.org/index.php/AAAI/article/view/39836