Abstract
In this paper, we investigate the numerical methods for solving stochastic variational inequalities. Using line search scheme, we propose an improved variance based stochastic extragradient method with different step sizes in the prediction and correction steps. The range of correction step size which can guarantee the convergence is also given. For the initial line search step size of each iteration, an adaptive method is adopted. Rather than the same scale for each reduction, a proportional reduction related to the problem is used to meet the line search criteria. Under the assumptions of Lipschitz continuous, pseudo-monotone operator and independent identically distributed sampling, the iterative complexity and the oracle complexity are obtained. When estimating the upper bound of the second order moment of the martingale difference sequence, we give a more convenient and comprehensible proof instead of using the Burkholder-Davis-Gundy inequality. The proposed algorithm is applied to fractional programming problems and the \(l_2\) regularized logistic regression problem. The numerical results demonstrate its superiority.





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References
Agarwal, A.: Information-theoretic lower bounds on the oracle complexity of stochastic convex optimization. IEEE Trans. Inform. Theory 58(5), 3235–3249 (2012)
Bach, F., Moulines, E.: Non-asymptotic analysis of stochastic approximation algorithms for machine learning. Neural Information Processing Systems (NIPS), Spain. hal-00608041, (2011)
Bertsekas, D.P.: Nonlinear Programming, 3rd edn. Athena Scientific, Belmont, Massachusetts (2016)
Bertsekas, D.P., Nedić, A., Ozdaglar, A.E.: Convex Analysis and Optimization. Athena Scientific, Belmont, Massachusetts (2003)
Bot, R.I., Mertikopoulos, P., Staudigl, M., Vuong, P.T.: Forward-backward-forward methods with variance reduction for stochastic variational inequalities. arXiv preprint arXiv:1902.03355v1 (2019)
Bottou, L., Curtis, F.E., Nocedal, J.: Optimization methods for large-scale machine learning. SIAM Rev. 60(2), 223–311 (2018)
Boucheron, S., Lugosi, G., Massart, P.: Concentration Inequalities: A Nonasymptotic Theory of Independence. Clarendon Press, Oxford (2012)
Cai, X., Gu, G., He, B.: On the O(1/t) convergence rate of the projection and contraction methods for variational inequalities with Lipschitz continuous monotone operators. Comput. Optim. Appl. 57(2), 339–363 (2014)
Cai, X., Han, D., Xu, L.: An improved first-order primal-dual algorithm with a new correction step. J. Global Optim. 57(4), 1419–1428 (2013)
Chen, Y., Lan, G., Ouyang, Y.: Accelerated schemes for a class of variational inequalities. Math. Program. 165(1), 113–149 (2017)
Dong, X., Cai, X., Han, D.: Prediction-correction method with BB step sizes. Front. Math. China 13(6), 1325–1340 (2018)
Facchinei, F., Pang, J.-S.: Finite-dimensional Variational Inequalities and Complementarity Problems, vol. I. Springer, New York (2003)
Gidel, G., Berard, H., Vincent, P., Julien, S.: A variational inequality perspective on generative adversarial nets. arXiv preprint arXiv:1802.10551v3 (2018)
He, B.: My 20 years research on alternating directions method of multipliers. Oper. Res. Trans. 22(1), 1–31 (2018)
He, B., Liao, L.: Improvements of some projection methods for monotone nonlinear variational inequalities. J. Optim. Theory Appl. 112(1), 111–128 (2002)
He, B., Yang, Z., Yuan, X.: An approximate proximal-extragradient type method for monotone variational inequalities. J. Math. Anal. Appl. 300(2), 362–374 (2004)
Iusem, A., Jofré, A., Oliveira, R., Thompson, P.: Extragradient method with variance reduction for stochastic variational inequalities. SIAM J. Optim. 27(2), 686–724 (2017)
Iusem, A., Jofré, A., Oliveira, R., Thompson, P.: Variance-based extragradient methods with line search for stochastic variational inequalities. SIAM J. Optim. 29(1), 175–206 (2019)
Iusem, A., Jofré, A., Thompson, P.: Incremental constraint projection methods for monotone stochastic variational inequalities. Math. Oper. Res. 44(1), 236–263 (2019)
Jiang, H., Xu, H.: Stochastic approximation approaches to the stochastic variational inequality problem. IEEE Trans. Automat. Control 53(6), 1462–1475 (2008)
Johnson, R., Zhang, T.: Accelerating stochastic gradient descent using predictive variance reduction. In Advances in Neural Information Processing Systems 26. Vol. 1, 315-323 (2013)
Juditsky, A., Nemirovski, A., Tauvel, C.: Solving variational inequalities with stochastic mirror-proximal algorithm. Stoch. Syst. 1(1), 17–58 (1987)
Kannan, A., Shanbhag, U.V.: Optimal stochastic extragradient schemes for pseudomonotone stochastic variational inequality problems and their variants. Comput. Optim. Appl. 74(3), 779–820 (2019)
Khobotov, E.: Modification of the extra-gradient method for solving variational inequalities and certain optimization problems. USSR Comput. Math. Math. Phys. 27(5), 120–127 (1987)
Korpelevič, G.M.: An extragradient method for finding saddle points and for other problems. Matecon 12(4), 747–756 (1976)
Koshal, J., Nedić, A., Shanbhag, U.V.: Regularized iterative stochastic approximation methods for stochastic variational inequality problems. IEEE Trans. Automat. Control 58(3), 594–609 (2013)
Krejic, N., Luzanin, Z., Nikolovski, F., Stojkovska, I.: A nonmonotone line search method for noisy minimization. Optim. Lett. 9(7), 1371–1391 (2015)
Krejic, N., Luzanin, Z., Ovcinz, S.: Descent direction method with line search for unconstrained optimization in noisy environment. Optim. Methods Softw. 30(6), 1164–1184 (2015)
Liu, J., Hou, Y., Kompella, S., Sherali, H.: Conjugate gradient projection approach for multi-antenna Gaussian broadcast channels. 2007 IEEE International Symposium on Information Theory. 781-785 (2007)
Mahsereci, M., Hennig, P.: Probabilistic line searches for stochastic optimization. J. Mach. Learn. Res. 18(119), 1–59 (2017)
Mishchenko, K., Kovalev, D., Shulgin, E., Richtárik, P., Malitsky, Y.: Revisiting stochastic extragradient. arXiv preprint arXiv:1905.11373v2 (2020)
Nemirovski, A., Juditsky, A., Lan, G., Shapiro, A.: Robust stochastic approximation approach to stochastic programming. SIAM J. Optim. 19(4), 1574–1609 (2009)
Polyak, B.: New method of stochastic approximation type. Autom. Remote Control. 51(7), 937–1008 (1990)
Robbins, H., Monro, S.: A stochastic approximation method. Ann. Math. Statist. 22(3), 400–407 (1951)
Shapiro, A., Dentcheva, D., Ruszczyňski, A.: Lectures on Stochastic Programming: Modeling and Theory. SIAM, Philadelphia (2009)
Shen, K., Yu, W.: Fractional programming for communication systems-part I: power control and beamforming. IEEE Trans. Signal Process. 66(10), 2616–2630 (2018)
Telatar, E.: Capacity of multi-antenna Gaussian channels. Eur. Trans. Telecommun. 10(6), 585–595 (1999)
Wardi, Y.: Stochastic algorithms with armijo stepsizes for minimization of functions. J. Optim. Theory Appl. 64(2), 399–417 (1990)
Xu, H.: Sample average approximation methods for a class of stochastic variational inequality problems. Asia-Pac. J. Oper. Res. 27(1), 103–119 (2010)
Yousefian, F., Nedić, A., Shanbhag, U.V.: On stochastic gradient and subgradient methods with adaptive steplength sequences. Automatica 48(1), 56–67 (2012)
Yousefian, F., Nedić, A., Shanbhag, U.V.: On smoothing, regularization, and averaging in stochastic approximation methods for stochastic variational inequality problems. Math. Program. 165(1), 391–431 (2017)
Acknowledgements
This research is supported by the National Natural Science Foundation of China (Grant Nos. 11871279, 12131004 and 11571178).
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Li, T., Cai, X., Song, Y. et al. Improved variance reduction extragradient method with line search for stochastic variational inequalities. J Glob Optim 87, 423–446 (2023). https://doi.org/10.1007/s10898-022-01135-1
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DOI: https://doi.org/10.1007/s10898-022-01135-1
Keywords
- Stochastic variational inequality
- Extragradient method
- Variance reduction
- Line search
- Martingale difference