arXiv:2411.05549cs.RO2024-11被引 2

让机器人持续学习家庭物品移动规律,避免遗忘旧知识。

STREAK: Streaming Network for Continual Learning of Object Relocations under Household Context Drifts

  • 用流式图神经网络+正则化与回放机制应对环境变化。
  • 在50多天跨家庭数据中保持高准确率,无灾难性遗忘。
  • 适合长期运行的家用服务机器人场景。

在真实世界中,机器人需在多样任务中持续适应动态变化。例如,在家庭环境中,机器人可基于观察物品移动习惯,主动协助用户取物。然而,交互数据具有非独立同分布特性——不同用户有不同习惯,导致数据分布随时间漂移。这带来挑战:如何在不遗忘旧知识的前提下融入新信息。为此,我们提出STREAK(Spatio Temporal RElocation with Adaptive Knowledge retention),一种面向实际机器人学习的持续学习框架。该方法采用流式图神经网络,结合正则化与回放技术,有效缓解上下文漂移并保留历史知识。其时间与内存效率高,无需重新训练全部过往数据,适用于数据不断累积的真实交互场景。我们在跨50多个家庭、持续50余天的任务上评估了该方法,结果表明其能有效防止灾难性遗忘,同时保持良好泛化能力,为长期人机交互提供了可扩展解决方案。

原文摘要 · Abstract (English)

In real-world settings, robots are expected to assist humans across diverse tasks and still continuously adapt to dynamic changes over time. For example, in domestic environments, robots can proactively help users by fetching needed objects based on learned routines, which they infer by observing how objects move over time. However, data from these interactions are inherently non-independent and non-identically distributed (non-i.i.d.), e.g., a robot assisting multiple users may encounter varying data distributions as individuals follow distinct habits. This creates a challenge: integrating new knowledge without catastrophic forgetting. To address this, we propose STREAK (Spatio Temporal RElocation with Adaptive Knowledge retention), a continual learning framework for real-world robotic learning. It leverages a streaming graph neural network with regularization and rehearsal techniques to mitigate context drifts while retaining past knowledge. Our method is time- and memory-efficient, enabling long-term learning without retraining on all past data, which becomes infeasible as data grows in real-world interactions. We evaluate STREAK on the task of incrementally predicting human routines over 50+ days across different households. Results show that it effectively prevents catastrophic forgetting while maintaining generalization, making it a scalable solution for long-term human-robot interactions.

持续学习机器人图神经网络家庭场景

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