Thiago Ouverney and Valdecy Pereira. 2026. A Composite Metric for Abstractive Summarization Evaluation: Integrating Lexical, Semantic, and Factual Dimensions. In Anais do XIV Symposium on Knowledge Discovery, Mining and Learning, outubro 19, 2026, Cuiabá/MT, Brasil. SBC, Porto Alegre, Brasil, 17-24. DOI: https://doi.org/10.5753/kdmile.2026.27518.