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Title: An interior-point algorithm for semidefinite least-squares problems (English)
Author: Daili, Chafia
Author: Achache, Mohamed
Language: English
Journal: Applications of Mathematics
ISSN: 0862-7940 (print)
ISSN: 1572-9109 (online)
Volume: 67
Issue: 3
Year: 2022
Pages: 371-391
Summary lang: English
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Category: math
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Summary: We propose a feasible primal-dual path-following interior-point algorithm for semidefinite least squares problems (SDLS). At each iteration, the algorithm uses only full Nesterov-Todd steps with the advantage that no line search is required. Under new appropriate choices of the parameter $\beta $ which defines the size of the neighborhood of the central-path and of the parameter $\theta $ which determines the rate of decrease of the barrier parameter, we show that the proposed algorithm is well defined and converges to the optimal solution of SDLS. Moreover, we obtain the currently best known iteration bound for the algorithm with a short-update method, namely, $\mathcal {O}(\sqrt {n}\log (n/\epsilon ))$. Finally, we report some numerical results to illustrate the efficiency of our proposed algorithm. (English)
Keyword: semidefinite least-squares problem
Keyword: interior-point method
Keyword: polynomial complexity
MSC: 65K05
MSC: 90C22
MSC: 90C25
MSC: 90C51
idZBL: Zbl 07547200
idMR: MR4409311
DOI: 10.21136/AM.2021.0217-20
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Date available: 2022-04-14T13:37:40Z
Last updated: 2022-09-06
Stable URL: http://hdl.handle.net/10338.dmlcz/150320
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