This code is written by Ziyi according to the reference "L1 / 2 Regularized Logistic Regression 2012 (Q.zhao,DY.Meng,ZB.Xu)" combine mutiple real datasets for meta-analysis Step1: Using mateAnalyze script to merge multiple real datasets, "Running your own meta-analysis.pdf" can guide you to generate merged dataset Step2: Automatic generate dataset such as "luca_alldata.txt" and generate "luca_ally.txt" manually. Step3: Run script "Logistic_****_realdata.m" for feature selection and classification.