Florentin Smarandache, Maikel Y. Leyva Vázquez, Mohamed Abdel‑Basset. Preface - Neutrosophic Sets and Systems, {Special Issue: Neutrosophic and Plithogenic Approaches in Data Science and Multivariate Analysis: Contributions from the IX Ibero-American Biometry Meeting}, Vol. 89, 2025. Neutrosophic Sets Syst. [Internet]. 2025 Oct. 1 [cited 2025 Nov. 16];89:1-6. Available from: https://fs.unm.edu/nss8/index.php/111/article/view/6714