Before using, you should select one of the data sets in the file cec_data_sets.zip. In detail, you need to copy the files of the 2020 data set or those of the 2022 data set to the folder of algorithm.
Moreover, code need be reivsed. To change code for fitting the 2022 data set, you should replace all "cec20_func" with "cec22_func".