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Residual Expansion Algorithm: Fast and Effective Optimization for Nonconvex Least Squares Problems

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arxiv 1705.09549 v1 pith:HQXMBNCI submitted 2017-05-26 cs.CV

Residual Expansion Algorithm: Fast and Effective Optimization for Nonconvex Least Squares Problems

classification cs.CV
keywords algorithmoptimizationnonconvexexpansionfastgloballeastproblems
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We propose the residual expansion (RE) algorithm: a global (or near-global) optimization method for nonconvex least squares problems. Unlike most existing nonconvex optimization techniques, the RE algorithm is not based on either stochastic or multi-point searches; therefore, it can achieve fast global optimization. Moreover, the RE algorithm is easy to implement and successful in high-dimensional optimization. The RE algorithm exhibits excellent empirical performance in terms of k-means clustering, point-set registration, optimized product quantization, and blind image deblurring.

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