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Neural network prediction of short-term motions of mobile objects in noisy environments

机译:嘈杂环境中移动物体短期运动的神经网络预测

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Abstract: The prediction of the trajectory of mobile objects is important in many robotics applications like robot motion planning and collision avoidance. In most cases, the measurements, on which predictions are based, are subject to noise and errors. This paper presents a neural network based approach for the prediction of short-term motions of mobile objects. We studied the effect of white additive noise and gaussian noise on the prediction accuracy. An adaptive continued learning strategy is used to reduce the prediction error and accurately track the mobile objects. An empirical study was conducted to determine the architectural features of the network (number of layers and number of neurons in each layer) and the learning parameters (learning rate, momentum factor and convergence criterion) that minimize the mean squared prediction error giving an acceptable time response. The mean squared error, and the average time performance of the network (number of learning steps before convergence) are used as performance criteria. The network results are compared with those obtained from a linear regression algorithm. The neural network outperformed the linear regression in accurately predicting swiftly changing motion patterns.!9
机译:摘要:在许多机器人应用中,例如机器人运动计划和避免碰撞,对移动对象的轨迹进行预测非常重要。在大多数情况下,基于预测的测量会受到噪声和误差的影响。本文提出了一种基于神经网络的方法来预测移动物体的短期运动。我们研究了白色加性噪声和高斯噪声对预测精度的影响。自适应持续学习策略用于减少预测误差并准确跟踪移动对象。进行了一项经验研究,以确定网络的结构特征(层数和每层神经元数)以及学习参数(学习率,动量因子和收敛准则),以最小化均方预测误差给出可接受的时间响应。均方误差和网络的平均时间性能(收敛之前的学习步骤数)用作性能标准。将网络结果与从线性回归算法获得的结果进行比较。在准确预测快速变化的运动模式方面,神经网络的性能优于线性回归。9

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