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学习异常强劲的卡尔曼滤波器

Learning an Outlier-Robust Kalman Filter
课程网址: http://videolectures.net/ecml07_ting_lor/  
主讲教师: Jo-Anne Ting
开课单位: 南加州大学
开课时间: 信息不详。欢迎您在右侧留言补充。
课程语种: 英语
中文简介:
在本文中,我们介绍了一种改进的卡尔曼滤波器,它可以在不需要用户手动调整参数的情况下,进行鲁棒的实时异常检测。依赖高质量感官数据(例如,机器人系统)的系统可以对包含异常值的数据敏感。标准卡尔曼滤波器对异常值不具有鲁棒性,为克服这一问题,提出了卡尔曼滤波器的其他变化形式。然而,这些方法可能需要手动参数调整、使用启发式方法或复杂的参数估计过程。我们的卡尔曼滤波器采用加权最小二乘法,通过引入每个数据样本的权重。在估计当前时间步长状态时,权重较小的数据样本的贡献较小。使用增量变分期望最大化框架,我们学习了权重和系统动力学。我们评估我们的卡尔曼滤波算法的数据从一个机器人狗。
课程简介: In this talk, we introduce a modified Kalman filter that performs robust, real-time outlier detection, without the need for manual parameter tuning by the user. Systems that rely on high quality sensory data (for instance, robotic systems) can be sensitive to data containing outliers. The standard Kalman filter is not robust to outliers, and other variations of the Kalman filter have been proposed to overcome this issue. However, these methods may require manual parameter tuning, use of heuristics or complicated parameter estimation procedures. Our Kalman filter uses a weighted least squares-like approach by introducing weights for each data sample. A data sample with a smaller weight has a weaker contribution when estimating the current time step’s state. Using an incremental variational Expectation-Maximization framework, we learn the weights and system dynamics. We evaluate our Kalman filter algorithm on data from a robotic dog.
关 键 词: 卡尔曼滤波器; 数据处理; 系统动态
课程来源: 视频讲座网
最后编审: 2019-12-05:cwx
阅读次数: 122