Loading metrics Open Access Peer-reviewed Research Article Citation: Han Q, Xu Y, Zhang S, Deng Q, Deng L, Zhang L, et al. (2026) An RVFLNs ensemble modeling method integrating PCA and PSO: Application to yield prediction of Nongxiang Baijiu. PLoS One 21(5): e0348784. https://doi.org/10.1371/journal.pone.0348784 Editor: Sheng Du, China University of Geosciences, CHINA Received: May 19, 2025; Accepted: April 21, 2026; Published: May 6, 2026 Copyright: © 2026 Han et al.