Abstract: A method for classifying individuals in mixtures of DNA is disclosed. The method comprises: Provide next-generation sequencing (NGS) data which comprises raw sequence reads originated from mixtures of DNA; performing a data processing procedure to generate a plurality of sparse matrix; and input the plurality of sparse matrix into a trained deep learning model installed on computers to classify individuals in the mixtures of DNA. In particular, the method is used to classify individuals in mixture of the DNAs from forensic dataset or whole exome sequencing dataset.