基于动物导航机制,构建可动态扩展的认知地图,实现高效自主探索。
Learning Dynamic Cognitive Map with Autonomous Navigation
- 在主动推断框架下构建动态认知地图,随预测位姿持续更新。
- 单次任务中快速学习环境结构,导航重叠率极低。
- 无需预先知晓环境大小,适合复杂未知场景的智能体导航。
受动物导航策略启发,我们提出一种基于生物原理的新型计算模型,用于空间导航与建图。动物凭借记忆、想象和策略决策,在复杂且存在混淆的环境中表现出卓越导航能力。我们的模型通过在主动推断框架内构建动态扩展的认知地图,整合对位姿的预测,提升生成模型对新奇性和环境变化的适应性。结合结构学习与主动推断导航,模型实现了高效的探索与利用,在预期未访问区域时动态扩展模型容量,并根据新证据修正先前信念。在迷你网格环境中的对比实验显示,本模型相较于具有相似目标的克隆结构认知图模型(CSCG),可在单个回合内快速学习环境结构,且导航路径重叠极少。该方法无需预先掌握观测或世界维度信息,凸显其在复杂环境中的鲁棒性与有效性。
原文摘要 · Abstract (English)
Inspired by animal navigation strategies, we introduce a novel computational model to navigate and map a space rooted in biologically inspired principles. Animals exhibit extraordinary navigation prowess, harnessing memory, imagination, and strategic decision-making to traverse complex and aliased environments adeptly. Our model aims to replicate these capabilities by incorporating a dynamically expanding cognitive map over predicted poses within an Active Inference framework, enhancing our agent's generative model plasticity to novelty and environmental changes. Through structure learning and active inference navigation, our model demonstrates efficient exploration and exploitation, dynamically expanding its model capacity in response to anticipated novel un-visited locations and updating the map given new evidence contradicting previous beliefs. Comparative analyses in mini-grid environments with the Clone-Structured Cognitive Graph model (CSCG), which shares similar objectives, highlight our model's ability to rapidly learn environmental structures within a single episode, with minimal navigation overlap. Our model achieves this without prior knowledge of observation and world dimensions, underscoring its robustness and efficacy in navigating intricate environments.
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