Best qualified papers are published in the IEEEXplore Digital Library. You can see the published works from the previous versions in (https://ieeexplore.ieee.org/xpl/conhome/1826684/all-proceedings):

Remember that best-selected papers are demanded by an extension to be included in the Applications of Computational Intelligence book by Springer. You can see the previous versions in (https://link.springer.com/conference/colcaci):