Update README.md

README.md

@@ -109,6 +109,6 @@ The CLASum dataset is released under the [Apache-2.0 License](http://www.apache.
 @Unpublished{Ahuir2025,
   author = {Ahuir, Vicent and Castro-Bleda, María José and Hurtado, Lluís-F},
   date   = {2025-10},
-  title  = {Beyond ``Using Their Own Words'': Abstractivity Characterization in Summarization},
+  title  = {Beyond Surface Metrics: Modeling Abstractivity in Summarization via Action-Based Spectrums.},
 }
 ```