Journal of the Operations Research Society of China ›› 2026, Vol. 14 ›› Issue (1): 1-31.doi: 10.1007/s40305-024-00538-z

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IPRSOCP: A Primal-Dual Interior-Point Relaxation Algorithm for Second-Order Cone Programming

Rui-Jin Zhang1,2, Zhao-Wei Wang1,2, Xin-Wei Liu3, Yu-Hong Dai1,2   

  1. 1 Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190, China;
    2 School of Mathematical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Institute of Mathematics, Hebei University of Technology, Tianjin 300401, China
  • Received:2023-09-20 Revised:2024-01-11 Online:2026-03-30 Published:2026-03-16
  • Contact: Yu-Hong Dai E-mail:dyh@lsec.cc.ac.cn
  • Supported by:
    The third author was supported by the National Natural Science Foundation of China (Nos.12071108 and 11671116).The fourth author was supported by the National Natural Science Foundation of China (Nos.12021001,11991021,11991020,and 11971372) and the Strategic Priority Research Program of Chinese Academy of Sciences (No.XDA27000000).

Abstract: Inspired by the smoothing barrier augmented Lagrangian function in Liu et al. (Math Methods Oper Res 96(3):351-382, 2022), we propose a primal-dual interior-point relaxation algorithm for second-order cone programming, called IPRSOCP. Two features of the IPRSOCP algorithm are as follows. One is that the iterative points of the proposed algorithm need not lie inside the interior region, convening the use of warmstart. The other is that an explicit form of the Schur complementmatrix is explored such that the low-rank structure of the Schur complement matrix can be used to improve numerical stability and efficiency. Under suitable assumptions, it is shown that the barrier parameter in the IPRSOCP algorithm tends to zero and the generated sequence of iterations is globally convergent to the solution. Numerical results demonstrate that the IPRSOCP algorithm is competitive with the open-source benchmark solvers, SeDuMi, SDPT3, and ECOS, in terms of robustness and efficiency.

Key words: Second-order cone programming, Interior-point relaxation method, Smoothing barrier augmented Lagrangian function, Schur complement matrix, Global convergence

CLC Number: