町をまたいだ夢見:セマンティック・ロールアウトと町敵対的正則化によるCARLAでの未見町固定ルート運転のゼロショット転移
Dreaming Across Towns: Semantic Rollout and Town-Adversarial Regularization for Zero-Shot Held-Out-Town Fixed-Route Driving in CARLA
CARLAシミュレータで、訓練に使っていない町(Town03/Town04)へ直接評価するゼロショット転移を改善する手法を提案。将来の視覚的意味予測と、データの出自町を判別できないようにする敵対的正則化を訓練時のみ追加し、ベースラインより高い成功率を達成した。
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1. どんなもの?
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著者: Feeza Khan Khanzada, Jaerock Kwon
分類: cs.RO
原文アブストラクト
Driving agents trained in one simulated town often perform poorly in a new town because the road shapes, intersections, and lane layouts can be different. This paper studies how to improve this kind of transfer in the CARLA driving simulator without giving the agent any training data from the test towns. The agent is trained only in Town05 and Town06, then evaluated directly in Town03 and Town04. To focus on road-layout differences, all experiments use the same weather and traffic settings. We propose a training method that encourages the agent to learn features that are useful across towns rather than features tied to one training town. During training, the agent is asked to predict the high-level visual meaning of future camera views and is also discouraged from relying on cues that reveal which source town the data came from. These extra learning signals are used only during training; at test time, the driving policy uses the same observation and control interface as the baseline agent. In controlled comparisons with matched DreamerV3-style world-model driving agents, the proposed method achieves the highest mean held-out success: 36.6\% on Town03 with a 95\% confidence interval of [30.5, 42.7] and 85.6\% on Town04 with a 95\% confidence interval of [84.0, 87.2], computed across five training seeds. Seed-paired tests against the strongest primary baselines show positive success-rate differences in both held-out towns. Additional experiments show that predicting future visual meaning alone or removing town-specific cues alone is not enough to match the combined method. These results suggest that combining future-scene understanding with reduced reliance on source-town-specific features can improve cross-town driving performance in this CARLA setting.
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