Papers › An unexpected connection between Bayes $A-$optimal designs and the Group Lasso

An unexpected connection between Bayes $A-$optimal designs and the Group Lasso

6 Sep 2018arXiv:1809.01931links table onlyarchive 2025-07-28

Guillaume Sagnol, Edouard Pauwels

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We show that the A-optimal design optimization problem over m design points in ℝⁿ is equivalent to minimizing a quadratic function plus a group lasso sparsity inducing term over n×m real matrices. This observation allows to describe several new algorithms for A-optimal design based on splitting and block coordinate decomposition. These techniques are well known and proved powerful to treat large scale problems in machine learning and signal processing communities. The proposed algorithms come with rigorous convergence guaranties and convergence rate estimate stemming from the optimization literature. Performances are illustrated on synthetic benchmarks and compared to existing methods for solving the optimal design problem.

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