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arXiv 1809.07412cs.LGcs.AIcs.SYeess.SY
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在单体神经事件推理架构中的学习、规划与控制

Learning, Planning, and Control in a Monolithic Neural Event Inference Architecture

Cognitive Modeling Group Computer Science Department University of Tübingen(图宾根大学认知建模组计算机科学系)

Martin V. Butz, David Bilkey, Dania Humaidan, Alistair Knott, Sebastian Otte

AI总结:

该研究提出了一种单体神经事件推理架构REPRISE,通过学习动态系统的时序事件预测模型,结合回顾和前瞻推理,实现对传感器运动动态的高效预测与控制。

摘要:

我们引入了REPRISE,一种回顾和前瞻推理方案,用于学习动态系统的时序事件预测模型。REPRISE推断出不可观测的上下文事件状态及其最佳解释最近遭遇的传感器运动经验的时序预测模型。同时,它以目标导向的方式优化即将到来的运动活动。在此,REPRISE通过循环神经网络(RNN)实现,该网络学习由不同模拟动态车辆生成的传感器运动连续性的时序前向模型。RNN通过上下文神经元增强,能够编码不同但相关的传感器运动动态为紧凑的事件代码。我们证明REPRISE能够同时学习分离和近似遇到的传感器运动动态:它分析传感器运动误差信号,同时适应内部上下文神经活动和连接权重值。此外,我们证明REPRISE可以利用所学模型诱导目标导向的模型预测控制,即近似主动推理:给定一个目标状态,系统想象一个优化该状态的运动命令序列,以最小化与目标的距离。RNN活动因此持续想象即将到来的未来并反思最近的过去,优化预测模型、隐藏神经状态活动和即将到来的运动活动。结果,事件预测神经编码得以发展,从而能够调用高效且适应性强的目标导向传感器运动控制。

英文摘要:

We introduce REPRISE, a REtrospective and PRospective Inference SchEme, which learns temporal event-predictive models of dynamical systems. REPRISE infers the unobservable contextual event state and accompanying temporal predictive models that best explain the recently encountered sensorimotor experiences retrospectively. Meanwhile, it optimizes upcoming motor activities prospectively in a goal-directed manner. Here, REPRISE is implemented by a recurrent neural network (RNN), which learns temporal forward models of the sensorimotor contingencies generated by different simulated dynamic vehicles. The RNN is augmented with contextual neurons, which enable the encoding of distinct, but related, sensorimotor dynamics as compact event codes. We show that REPRISE concurrently learns to separate and approximate the encountered sensorimotor dynamics: it analyzes sensorimotor error signals adapting both internal contextual neural activities and connection weight values. Moreover, we show that REPRISE can exploit the learned model to induce goal-directed, model-predictive control, that is, approximate active inference: Given a goal state, the system imagines a motor command sequence optimizing it with the prospective objective to minimize the distance to the goal. The RNN activities thus continuously imagine the upcoming future and reflect on the recent past, optimizing the predictive model, the hidden neural state activities, and the upcoming motor activities. As a result, event-predictive neural encodings develop, which allow the invocation of highly effective and adaptive goal-directed sensorimotor control.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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