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arXiv 1112.2679stat.MLcs.AI
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稀疏特征值问题的截断幂方法

Truncated Power Method for Sparse Eigenvalue Problems

Rutgers University(罗格斯大学)

Xiao-Tong Yuan, Tong Zhang

摘要:

本文考虑稀疏特征值问题,即提取最多含有$k$非零分量的主导(最大)稀疏特征向量。我们提出了一个简单而有效的解决方案,称为截断功率方法,可以近似地解决潜在的非凸优化问题。证明了截断幂方法具有很强的稀疏恢复效果,这一理论是我们开发新算法的主要动机。所提出的方法进行了测试,如稀疏主成分分析和densitivity $k$ -子图问题的应用程序。在几个合成和真实世界的大规模数据集上的大量实验证明了我们的方法具有竞争力的经验性能。

英文摘要:

This paper considers the sparse eigenvalue problem, which is to extract dominant (largest) sparse eigenvectors with at most $k$ non-zero components. We propose a simple yet effective solution called truncated power method that can approximately solve the underlying nonconvex optimization problem. A strong sparse recovery result is proved for the truncated power method, and this theory is our key motivation for developing the new algorithm. The proposed method is tested on applications such as sparse principal component analysis and the densest $k$-subgraph problem. Extensive experiments on several synthetic and real-world large scale datasets demonstrate the competitive empirical performance of our method.

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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