PCA-F-SHCNNet: Principal Component Analysis-Fused-Shepard Convolutional Neural Networks for lung cancer detection and severity level classification. - Sk Altaf Hussain Basha; Pravin R. Kshirsagar; P. Srinivasa Rao; Tan Kuan Tak; Sivaneasan Bala Krishnan (Biomed. Signal Process. Control., 2025)