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高斯信念传播的轨道 - 乘积表示与校正Orbit-Product Representation and Correction of Gaussian Belief Propagation |
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| 课程网址: | http://videolectures.net/icml09_johnson_opr/ |
| 主讲教师: | Jason K. Johnson |
| 开课单位: | 麻省理工学院 |
| 开课时间: | 2009-08-26 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | We present a new view of Gaussian belief propagation (GaBP) based on a representa- tion of the determinant as a product over or- bits of a graph. We show that the GaBP determinant estimate captures totally back- tracking orbits of the graph and consider how to correct this estimate. We show that the missing orbits may be grouped into equiva- lence classes corresponding to backtrackless orbits and the contribution of each equiv- alence class is easily determined from the GaBP solution. Furthermore, we demon- strate that this multiplicative correction fac- tor can be interpreted as the determinant of a backtrackless adjacency matrix of the graph with edge weights based on GaBP. Finally, an efficient method is proposed to compute a truncated correction factor including all backtrackless orbits up to a specified length. |
| 关 键 词: | 高斯信念传播; 乘法校正因子; 矩阵 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-04-23：lxf |
| 阅读次数: | 145 |