2017

Structured Low-Rank Matrix Factorization: Global Optimality, Algorithms, and Applications

Haeffele, Benjamin D., Vidal, Rene

Understand

Recently, convex formulations of low-rank matrix factorization problems have received considerable attention in machine learning.

  • However, such formulations often require solving for a matrix of the size of the data matrix, making it challenging to apply them to large scale datasets.
  • Moreover, in many applications the data can display structures beyond simply being low-rank, e.g., images and videos present complex spatio-temporal structures that are largely ignored by standard low-rank methods.
  • In this paper we study a matrix factorization technique that is suitable for large datasets and captures additional structure in the factors by using a particular form of regularization that includes well-known regularizers such as total variation and the nuclear norm as particular cases.

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