Cohen's kappa

Dear Challenge Group: Hello! I would like to know how the indicator of Cohen's kappa is evaluated, why is this indicator of mine always 0? Because I only insert contours into the QVS files? Thank you for your prompt attention！

Hi, The Kappa was used to evaluate the performance of atherosclerosis diagnosis, which is a classification task. * The sklearn.metrics.cohen_kappa_score is the function we used. * Please insert your classification results to the Contour comments in the QVS files. Please refer to the code for writing the QVS files (https://drive.google.com/file/d/16u2-uKmdIlkLSL7_oMLL_V-PQZLD3GjS/view?usp=sharing) and the evaluation code (https://drive.google.com/file/d/1m3qazpf1WnZLGFXlBeEM1AtIPNWxQJT1/view?usp=sharing).