The GPTP workshop series, which began in 2003, has served over the years as a focal meeting for genetic programming (GP) researchers. As such, we think it provides an excellent source for studying the development of GP over the past fifteen years. We thus present herein a trajectory of the thematic developments in the field of GP.

翻译：GPTP研讨会系列始于2003年，多年来一直是遗传编程（GP）研究者的重要会议。因此，我们认为该研讨会为研究过去十五年间GP的发展提供了极佳来源。本文据此呈现了GP领域主题演进的轨迹。