arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1005.0897cs.LG
收藏

复高斯核LMS算法

The Complex Gaussian Kernel LMS algorithm

University of Athens(雅典大学)

Pantelis Bouboulis, Sergios Theodoridis

摘要:

虽然真实的再生核被用于越来越多的机器学习问题,复杂的内核尚未被使用,尽管他们在应用程序,如通信的潜在利益。在这项工作中,我们专注于复高斯核及其在复核LMS算法中的可能应用。为了得到所需的梯度开发复杂的内核LMS(CKLMS),我们采用了强大的工具Wirtinger的微积分,这是最近引起了人们的关注,在信号处理社区。辛格的微积分简化了计算,为处理复杂信号提供了一个优雅的工具。为此,将RKHS的概念扩展到包括复杂的RKHS。实验证明,CKLMS算法在处理非线性时,比传统的复数LMS算法或宽线性复数LMS(WL-LMS)算法有显著的性能改善。

英文摘要:

Although the real reproducing kernels are used in an increasing number of machine learning problems, complex kernels have not, yet, been used, in spite of their potential interest in applications such as communications. In this work, we focus our attention on the complex gaussian kernel and its possible application in the complex Kernel LMS algorithm. In order to derive the gradients needed to develop the complex kernel LMS (CKLMS), we employ the powerful tool of Wirtinger's Calculus, which has recently attracted much attention in the signal processing community. Writinger's calculus simplifies computations and offers an elegant tool for treating complex signals. To this end, the notion of Writinger's calculus is extended to include complex RKHSs. Experiments verify that the CKLMS offers significant performance improvements over the traditional complex LMS or Widely Linear complex LMS (WL-LMS) algorithms, when dealing with nonlinearities.

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。

↑