This challenge has two multi-class datasets: one labelled and one unlabelled. File descriptions DLAI3_Phase3.zip - the multi-class training set containing three folders of no-finding, thorax-diseases, and covid sampleSubmission.csv - a sample submission file in the correct format VALIDATE.zip - unlabelled set to be tested and submit in form of the sampleSubmission.csv which is two columns with first column as the filename and the second being "0" for No-Finding; "1" for Thorax-Diseases; and "2" for COVID-19.