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arXiv 2203.09810cs.LGcs.MAeess.SP
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低秩噪声下的分散学习

Dencentralized learning in the presence of low-rank noise

Imperial College London(帝国理工学院)

Roula Nassif, Virginia Bordignon, Stefan Vlaski, Ali H. Sayed

摘要:

由于观测噪声或干扰,网络中的代理收集的观测可能是不可靠的。本文提出了一种分布式算法,允许每个节点,以提高其自身的观察的可靠性,仅依靠本地计算和直接邻居的相互作用,假设由网络监测的字段(图形信号)位于一个低维子空间和低秩噪声存在除了通常的满秩噪声。虽然倾斜投影可以用于沿着与子空间倾斜的方向将测量投影到低秩子空间上,但是所得到的解不是分布的。从集中式的解决方案,我们提出了一种算法,执行倾斜投影的整体观测到信号子空间的迭代和分布式的方式。然后,我们展示了如何斜投影框架可以扩展到处理分布式学习和适应问题的网络。

英文摘要:

Observations collected by agents in a network may be unreliable due to observation noise or interference. This paper proposes a distributed algorithm that allows each node to improve the reliability of its own observation by relying solely on local computations and interactions with immediate neighbors, assuming that the field (graph signal) monitored by the network lies in a low-dimensional subspace and that a low-rank noise is present in addition to the usual full-rank noise. While oblique projections can be used to project measurements onto a low-rank subspace along a direction that is oblique to the subspace, the resulting solution is not distributed. Starting from the centralized solution, we propose an algorithm that performs the oblique projection of the overall set of observations onto the signal subspace in an iterative and distributed manner. We then show how the oblique projection framework can be extended to handle distributed learning and adaptation problems over networks.

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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