すべてのデータは必要か?軌道エントロピー最大化による大規模自動運転データセットの効率的なデータ刈り込み
Are All Data Necessary? Efficient Data Pruning for Large-scale Autonomous Driving Dataset via Trajectory Entropy Maximization
自動運転データの軌道分布エントロピーを評価し、元データの統計的特性を保つ高価値サンプルを反復選択することで、モデル性能を維持しつつデータセットを最大40%削減する手法を提案。
詳しい要約
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2. 先行研究と比べてどこがすごい?
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著者: Zhaoyang Liu, Weitao Zhou, Junze Wen, Cheng Jing, Qian Cheng, Kun Jiang, Diange Yang
分類: cs.RO
原文アブストラクト
Collecting large-scale naturalistic driving data is essential for training robust autonomous driving planners. However, real-world datasets often contain a substantial amount of repetitive and low-value samples, which lead to excessive storage costs and bring limited benefits to policy learning. To address this issue, we propose an information-theoretic data pruning method that effectively reduces the training data volume without compromising model performance. Our approach evaluates the trajectory distribution information entropy of driving data and iteratively selects high-value samples that preserve the statistical characteristics of the original dataset in a model-agnostic manner. From a theoretical perspective, we show that maximizing trajectory entropy effectively constrains the Kullback-Leibler divergence between the pruned subset and the original data distribution, thereby maintaining generalization ability. Comprehensive experiments on the NuPlan benchmark with a large-scale imitation learning framework demonstrate that the proposed method can reduce the dataset size by up to 40% while maintaining closed-loop performance. This work provides a lightweight and theoretically grounded approach for scalable data management and efficient policy learning in autonomous driving systems.
