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  4. Fast Proximal Algorithms For Self-Concordant Function Minimization With Application To Sparse Graph Selection
 
conference paper

Fast Proximal Algorithms For Self-Concordant Function Minimization With Application To Sparse Graph Selection

Kyrillidis, Anastasios  
•
Cevher, Volkan  orcid-logo
2013
Proceddings of the 2013 IEEE International Conference On Acoustics, Speech And Signal Processing (ICASSP)
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

The convex l(1)-regularized log det divergence criterion has been shown to produce theoretically consistent graph learning. However, this objective function is challenging since the l(1)-regularization is nonsmooth, the log det objective is not globally Lipschitz gradient function, and the problem is high-dimensional. Using the self-concordant property of the objective, we propose a new adaptive step size selection and present the (F)PS ((F)ast Proximal algorithms for Self-concordant functions) algorithmic framework which has linear convergence and exhibits superior empirical results as compared to state-of-the-art first order methods.

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