進化的直接方策探索における汎用的早期停止
Generalized Early Stopping in Evolutionary Direct Policy Search
目的値の時系列だけを見て評価を早期に打ち切る汎用的な停止基準を提案し、ゲーム・ロボティクス・古典制御の5環境で最大75%の計算時間削減を達成した。
著者: Etor Arza, Leni K. Le Goff, Emma Hart
分類: stat.ML, cs.LG, cs.NE, cs.RO
原文アブストラクト
Lengthy evaluation times are common in many optimization problems such as direct policy search tasks, especially when they involve conducting evaluations in the physical world, e.g. in robotics applications. Often when evaluating solution over a fixed time period it becomes clear that the objective value will not increase with additional computation time (for example when a two wheeled robot continuously spins on the spot). In such cases, it makes sense to stop the evaluation early to save computation time. However, most approaches to stop the evaluation are problem specific and need to be specifically designed for the task at hand. Therefore, we propose an early stopping method for direct policy search. The proposed method only looks at the objective value at each time step and requires no problem specific knowledge. We test the introduced stopping criterion in five direct policy search environments drawn from games, robotics and classic control domains, and show that it can save up to 75% of the computation time. We also compare it with problem specific stopping criteria and show that it performs comparably, while being more generally applicable.
