Lexicase Selection

Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the owner/author(s). GECCO ’21 Companion, Lille, France © 2021 Copyright held by the owner/author(s). ACM ISBN 978-1-4503-8351-6/21/07 $15.00 https://doi.org/10.1145/3449726.3461408 Background and Motivation