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R1-PCA: rotational invariant L1-norm principal component analysis for robust subspace factorization

Ding, Chris, Zhou, Ding, He, Xiaofeng, Zha, Hongyuan·2006·Proceedings of the 23rd international conference on Machine learning - ICML '06

Abstract

Principal component analysis (PCA) minimizes the sum of squared errors (L2-norm) and is sensitive to the presence of outliers. We propose a rotational invariant L1-norm PCA (R1-PCA). R1-PCA is similar to PCA in that (1) it has a unique global solution, (2) the solution are principal eigenvectors of a robust covariance matrix (re-weighted to soften the effects of outliers), (3) the solution is rotational invariant. These properties are not shared by the L1-norm PCA. A new subspace iteration algorithm is given to compute R1-PCA efficiently. Experiments on several real-life datasets show R1-PCA can effectively handle outliers. We extend R1-norm to K-means clustering and show that L1-norm K-means leads to poor results while R1-K-means outperforms standard K-means.

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Metadata

Authors
Ding, C., Zhou, D., He, X., & Zha, H.
Venue
Proceedings of the 23rd international conference on Machine learning - ICML '06
Publisher
ACM Press
Published
2006
Pages
281-288
OpenAlex
W2053090063
Cited by
633
References
3
FWCI
6.41
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: R1-PCA: rotational invariant L1-norm principal component analysis for robust subspace factorization. https://app.cochat.ai/papers/10.1145/1143844.1143880
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Ding, C., Zhou, D., He, X., & Zha, H. (2006). R1-PCA: rotational invariant L1-norm principal component analysis for robust subspace factorization. Proceedings of the 23rd international conference on Machine learning - ICML '06. https://doi.org/10.1145/1143844.1143880

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