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Paper detail

Sketch-and-project methods for tensor linear systems

For tensor linear systems with respect to the popular t-product, we first present the sketch-and-project method and its adaptive variants. Their Fourier domain versions are also investigated. Then, considering that the existing sketching tensor or way for sampling has some limitations, we propose two improved strategies. Convergence analyses for the methods mentioned above are provided. We compare our methods with the existing ones using synthetic and real data. Numerical results show that they have quite decent performance in terms of the number of iterations and running time.

preprint2022arXivOpen access
Ling TangYajie YuYanjun ZhangHanyu Li
math.NANumerical Analysis
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Ling TangYajie YuYanjun ZhangHanyu Li

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