So CORE is the de facto standard benchmark to check the quality of a computer science conference. However, there are some premier events that are not covered by this ranking. For instance, I'm quite puzzled with the IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER). It will be the 28th edition of this conference in 2021, and yet SANER has not been included in CORE! What is more, it is a well-established venue, recognized in the software engineering community for the quality of the accepted research papers. Any thoughts why SANER is not ranked A, or as a matter of fact not ranked at all?