NSVD: Normalized Singular Value Deviation Reveals Number of Latent Factors in Tensor Decomposition
NSVD: Normalized Singular Value Deviation Reveals Number of Latent Factors in Tensor Decomposition
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NSVD:归一化奇异值偏差揭示张量分解中潜在因子的数量
DOI:
10.1137/1.9781611976236.75
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Papalexakis, Evangelos E.
中科院分区:
文献类型:
--
作者:
Tsitsikas, Yorgos;Papalexakis, Evangelos E.
Tensor decomposition has been shown, time and time again, to be an effective tool in multiaspect data mining, especially in exploratory applications where the interest is in discovering hidden interpretable structure from the data. In such exploratory applications, the number of such hidden structures is of utmost importance since incorrect selection may imply the discovery of noisy artifacts that do not really represent a meaningful pattern. Although extremely important, selection of this number of latent factors, also known as low-rank, is very hard, and in most cases, practitioners and researchers resort toad hoctrial-and-error or assume that somehow this number is known or is given via domain expertise. There has been a considerable amount of prior work that proposes heuristics for selecting this low rank. However, as we argue in this article, the state of the art in those heuristic methods is rather unstable and does not always reveal the correct answer. In this article, we propose the Normalized Singular Value Deviation (NSVD), a novel method for selecting the number of latent factors in Tensor Decomposition that is based on principled theoretical foundations. We extensively evaluate the effectiveness ofNSVDin synthetic and real data and demonstrate that it yields a more robust, stable, and reliable estimation than state of the art. Finally, we provide an efficient compression scheme for facilitating the use ofNSVDin very big tensors.
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DOI:
10.1007/978-3-030-10928-8_20
发表时间:
2018-04
期刊:
--
影响因子:
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作者:
Ravdeep Pasricha;Ekta Gujral;E. Papalexakis
通讯作者:
Ravdeep Pasricha;Ekta Gujral;E. Papalexakis
DOI:
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发表时间:
2001
期刊:
Symposium on Theoretical Aspects of Computer Science
影响因子:
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作者:
M. Bläser
通讯作者:
M. Bläser
DOI:
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发表时间:
1978
期刊:
影响因子:
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作者:
Thomas D. Howell
通讯作者:
Thomas D. Howell
DOI:
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发表时间:
2013
期刊:
影响因子:
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作者:
H. Derksen
通讯作者:
H. Derksen