Abstract
We present a modified and simplified version of an infeasible interior-point method for second-order cone optimization published in 2013 (Zangiabadi et al. in J Optim Theory Appl, 2013). In the earlier version, each iteration consisted of one so-called feasibility step and a few centering steps. Here, each iteration consists of only a feasibility step. Thus, the new algorithm improves the number of iterations and the improvement is due to a lemma which gives an upper bound for the proximity after the feasibility step. The complexity result coincides with the best-known iteration bound for infeasible interior-point methods.
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The author would like to thank the editors and the anonymous referees for their useful comments and suggestions, which helped to improve the presentation of this paper.
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Kheirfam, B. A Modified and Simplified Full Nesterov–Todd Step \(\mathcal {O}(N)\) Infeasible Interior-Point Method for Second-Order Cone Optimization. J. Oper. Res. Soc. China 6, 301–315 (2018). https://doi.org/10.1007/s40305-017-0168-0
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DOI: https://doi.org/10.1007/s40305-017-0168-0
Keywords
- Second-order cone optimization
- Infeasible interior-point method
- Primal-dual method
- Polynomial complexity