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Comput.</a> <a href="/?q=in%3A512972" title="Articles in this Issue">34, No. 3, Paper No. 107, 13 p. (2024)</a>. </div> <div class="abstract">Summary: In the training process of machine learning, the minimization of the empirical risk loss function is often used to measure the difference between the model’s predicted value and the real value. Stochastic gradient descent is very popular for this type of optimization problem, but converges slowly in theoretical analysis. To solve this problem, there are already many algorithms with variance reduction techniques, such as SVRG, SAG, SAGA, etc. Some scholars apply the conjugate gradient method in traditional optimization to these algorithms, such as CGVR, SCGA, SCGN, etc., which can basically achieve linear convergence speed, but these conclusions often need to be established under some relatively strong assumptions. In traditional optimization, the conjugate gradient method often requires the use of line search techniques to achieve good experimental results. In a sense, line search embodies some properties of the conjugate methods. Taking inspiration from this, we apply the modified three-term conjugate gradient method and line search technique to machine learning. In our theoretical analysis, we obtain the same convergence rate as SCGA under weaker conditional assumptions. We also test the convergence of our algorithm using two non-convex machine learning models.</div> <div class="clear"></div> <br> <div class="citations"><div class="clear"><a href="/?q=rf%3A7879270">Cited in <strong>1</strong> Document</a></div></div> <div class="classification"> <h3>MSC:</h3> <table><tr> <td> <a class="mono" href="/classification/?q=cc%3A62-08" title="MSC2020">62-08</a> </td> <td class="space"> Computational methods for problems pertaining to statistics </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A65K05" title="MSC2020">65K05</a> </td> <td class="space"> Numerical mathematical programming methods </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A90C26" title="MSC2020">90C26</a> </td> <td class="space"> Nonconvex programming, global optimization </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A90C52" title="MSC2020">90C52</a> </td> <td class="space"> Methods of reduced gradient type </td> </tr></table> </div><div class="keywords"> <h3>Keywords:</h3><a href="/?q=ut%3Amachine+learning">machine learning</a>; <a href="/?q=ut%3Aempirical+risk+loss+function+minimization">empirical risk loss function minimization</a>; <a href="/?q=ut%3Astochastic+conjugate+gradient">stochastic conjugate gradient</a>; <a href="/?q=ut%3Alinear+convergence">linear convergence</a></div> <div class="software"> <h3>Software:</h3><a href="/software/22205">Adam</a>; <a href="/software/39677">Saga</a>; <a href="/software/49747">AdaBelief</a>; <a href="/software/39429">ADADELTA</a></div> <!-- Modal used to show zbmath metadata in different output formats--> <div class="modal fade" id="metadataModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> <h4 class="modal-title" id="myModalLabel">Cite</h4> </div> <div class="modal-body"> <div class="form-group"> <label for="select-output" class="control-label">Format</label> <select id="select-output" class="form-control" aria-label="Select Metadata format"></select> </div> <div class="form-group"> <label for="metadataText" class="control-label">Result</label> <textarea class="form-control" id="metadataText" rows="10" style="min-width: 100%;max-width: 100%"></textarea> </div> <div id="metadata-alert" class="alert alert-danger" role="alert" style="display: none;"> <!-- alert for connection errors etc --> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-primary" onclick="copyMetadata()">Copy to clipboard</button> <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> </div> </div> </div> </div> <div class="functions clearfix"> <div class="function"> <!-- Button trigger metadata modal --> <a type="button" class="btn btn-default btn-xs pdf" data-toggle="modal" data-target="#metadataModal" data-itemtype="Zbl" data-itemname="Zbl 1541.62018" data-ciurl="/ci/07879270" data-biburl="/bibtex/07879270.bib" data-amsurl="/amsrefs/07879270.bib" data-xmlurl="/xml/07879270.xml" > Cite </a> <a class="btn btn-default btn-xs pdf" data-container="body" type="button" href="/pdf/07879270.pdf" title="Zbl 1541.62018 as PDF">Review PDF</a> </div> <div class="fulltexts"> <span class="fulltext">Full Text:</span> <a class="btn btn-default btn-xs" type="button" href="https://doi.org/10.1007/s11222-024-10409-5" aria-label="DOI for “Stochastic three-term conjugate gradient method with variance technique for non-convex learning”" title="10.1007/s11222-024-10409-5">DOI</a> </div> <div class="sfx" style="float: right;"> </div> </div> <div class="references"> <h3>References:</h3> <table><tr> <td>[1]</td> <td class="space">Bottou, L.: Large-scale machine learning with stochastic gradient descent//Proceedings of COMPSTAT’2010: 19th international conference on computational statistics Paris France, Aug 22-27, 2010 Keynote, Invited and Contributed Papers. Physica-Verlag HD, (2010): 177-186 · <a href="/1436.68293" class="nowrap">Zbl 1436.68293</a></td> </tr><tr> <td>[2]</td> <td class="space">Bottou, L.; Curtis, FE; Nocedal, J., Optimization methods for large-scale machine learning, SIAM Rev., 60, 2, 223-311, 2018 · <a href="/1397.65085" class="nowrap">Zbl 1397.65085</a> · <a href="https://doi.org/10.1137/16M1080173" class="nowrap">doi:10.1137/16M1080173</a></td> </tr><tr> <td>[3]</td> <td class="space">Cauchy, A., Méthode générale pour la résolution des systemes d’équations simultanées[J], Comp. Rend. Sci. Paris, 1847, 25, 536-538, 1847</td> </tr><tr> <td>[4]</td> <td class="space">Dai, YH, Conjugate gradient methods with Armijo-type line searches, Acta Math. Appl. Sin., 18, 1, 123-130, 2002 · <a href="/1114.90479" class="nowrap">Zbl 1114.90479</a> · <a href="https://doi.org/10.1007/s102550200010" class="nowrap">doi:10.1007/s102550200010</a></td> </tr><tr> <td>[5]</td> <td class="space">Dai, YH; Yuan, Y., A nonlinear conjugate gradient method with a strong global convergence property, SIAM J. Optim., 10, 1, 177-182, 1999 · <a href="/0957.65061" class="nowrap">Zbl 0957.65061</a> · <a href="https://doi.org/10.1137/S1052623497318992" class="nowrap">doi:10.1137/S1052623497318992</a></td> </tr><tr> <td>[6]</td> <td class="space">Defazio, A., Bach, F., Lacoste-Julien S.: . SAGA: a fast incremental gradient method with support for non-strongly convex composite objectives. Adv. Neural Inform. Process. Syst. (2014), 27</td> </tr><tr> <td>[7]</td> <td class="space">Fletcher, R.; Reeves, CM, Function minimization by conjugate gradients, Comput. J., 7, 2, 149-154, 1964 · <a href="/0132.11701" class="nowrap">Zbl 0132.11701</a> · <a href="https://doi.org/10.1093/comjnl/7.2.149" class="nowrap">doi:10.1093/comjnl/7.2.149</a></td> </tr><tr> <td>[8]</td> <td class="space">Goodfellow, I., Bengio, Y., Courville, A.: Deep learning. MIT press, (2016) · <a href="/1373.68009" class="nowrap">Zbl 1373.68009</a></td> </tr><tr> <td>[9]</td> <td class="space">Hager, WW; Zhang, H., A new conjugate gradient method with guaranteed descent and an efficient line search, SIAM J. Optim., 16, 1, 170-192, 2005 · <a href="/1093.90085" class="nowrap">Zbl 1093.90085</a> · <a href="https://doi.org/10.1137/030601880" class="nowrap">doi:10.1137/030601880</a></td> </tr><tr> <td>[10]</td> <td class="space">Huang, R., Qin, Y., Liu, K., Yuan, G. (2023). Biased stochastic conjugate gradient algorithm with adaptive step size for nonconvex problems. Expert Systems with Applications 121556</td> </tr><tr> <td>[11]</td> <td class="space">Jiang, XZ; Zhu, YH; Jian, JB, Two efficient nonlinear conjugate gradient methods with restart procedures and their applications in image restoration[J], Nonlinear Dyn., 111, 6, 5469-5498, 2023 · <a href="https://doi.org/10.1007/s11071-022-08013-1" class="nowrap">doi:10.1007/s11071-022-08013-1</a></td> </tr><tr> <td>[12]</td> <td class="space">Jin, XB; Zhang, XY; Huang, K., Stochastic conjugate gradient algorithm with variance reduction, IEEE Trans. Neural Netw. Learn. Syst., 30, 5, 1360-1369, 2018 · <a href="https://doi.org/10.1109/TNNLS.2018.2868835" class="nowrap">doi:10.1109/TNNLS.2018.2868835</a></td> </tr><tr> <td>[13]</td> <td class="space">Johnson, R., Zhang, T.: Accelerating stochastic gradient descent using predictive variance reduction. Adv. Neural Inform. Process. Syst. (2013), 26</td> </tr><tr> <td>[14]</td> <td class="space">Karimi, H., Nutini, J., Schmidt, M. (2016). Linear convergence of gradient and proximal-gradient methods under the polyak-ojasiewicz condition. In Machine learning and knowledge discovery in databases: European conference, ECML PKDD 2016, Riva del Garda, Italy, September 19-23, 2016, Proceedings, Part I 16 (pp. 795-811). Springer International Publishing</td> </tr><tr> <td>[15]</td> <td class="space">Kim, H.; Wang, C.; Byun, H., Variable three-term conjugate gradient method for training artificial neural networks, Neural Netw., 159, 125-136, 2023 · <a href="https://doi.org/10.1016/j.neunet.2022.12.001" class="nowrap">doi:10.1016/j.neunet.2022.12.001</a></td> </tr><tr> <td>[16]</td> <td class="space">Kim, H.; Wang, C.; Byun, H., Variable three-term conjugate gradient method for training artificial neural networks, Neural Netw., 159, 125-136, 2023 · <a href="https://doi.org/10.1016/j.neunet.2022.12.001" class="nowrap">doi:10.1016/j.neunet.2022.12.001</a></td> </tr><tr> <td>[17]</td> <td class="space">Kingma D.P., Ba, J.: Adam: A method for stochastic optimization. arXiv preprint arXiv:1412.6980, (2014)</td> </tr><tr> <td>[18]</td> <td class="space">Kou, C.; Yang, H., A mini-batch stochastic conjugate gradient algorithm with variance reduction, J. Glob. Optim., 87, 1-17, 2022</td> </tr><tr> <td>[19]</td> <td class="space">Lydia, A.; Francis, S., Adagrad-an optimizer for stochastic gradient descent, Int. J. Inf. Comput. Sci., 6, 5, 566-568, 2019</td> </tr><tr> <td>[20]</td> <td class="space">Nguyen L.M., Liu, J., Scheinberg, K, et al. SARAH: a novel method for machine learning problems using stochastic recursive gradient//International conference on machine learning. PMLR, 2017: 2613-2621</td> </tr><tr> <td>[21]</td> <td class="space">Ouyang, L.; Wu, J.; Jiang, X., Training language models to follow instructions with human feedback, Adv. Neural. Inf. Process. Syst., 35, 27730-27744, 2022</td> </tr><tr> <td>[22]</td> <td class="space">Polak, E., Ribiere, G.: Note sur la convergence de méthodes de directions conjuguées[J]. Revue française d’informatique et de recherche opérationnelle. Série rouge, 1969, 3(16): 35-43 · <a href="/0174.48001" class="nowrap">Zbl 0174.48001</a></td> </tr><tr> <td>[23]</td> <td class="space">Polyak, BT, The conjugate gradient method in extremal problems, USSR Comput. Math. Math. Phys., 9, 4, 94-112, 1969 · <a href="/0229.49023" class="nowrap">Zbl 0229.49023</a> · <a href="https://doi.org/10.1016/0041-5553(69)90035-4" class="nowrap">doi:10.1016/0041-5553(69)90035-4</a></td> </tr><tr> <td>[24]</td> <td class="space">Reddi, S.J, Kale, S., Kumar, S.: On the convergence of adam and beyond. arXiv preprint arXiv:1904.09237, (2019)</td> </tr><tr> <td>[25]</td> <td class="space">Robbins, H., Monro, S.: A stochastic approximation method. Ann. Math. Stat. 1951: 400-407 · <a href="/0054.05901" class="nowrap">Zbl 0054.05901</a></td> </tr><tr> <td>[26]</td> <td class="space">Schmidt, M., Le Roux, N., Bach, F.: Minimizing finite sums with the stochastic average gradient. Math. Program. 162, 83-112 (2017) · <a href="/1358.90073" class="nowrap">Zbl 1358.90073</a></td> </tr><tr> <td>[27]</td> <td class="space">Wang, X.; Yuan, G.; Pang, L., A class of new three-term descent conjugate gradient algorithms for large-scale unconstrained optimization and applications to image restoration problems, Numer Algorithms, 93, 3, 949-970, 2023 · <a href="/07694955" class="nowrap">Zbl 07694955</a> · <a href="https://doi.org/10.1007/s11075-022-01448-y" class="nowrap">doi:10.1007/s11075-022-01448-y</a></td> </tr><tr> <td>[28]</td> <td class="space">Wang B, Ye Q. Improving deep neural networks’ training for image classification with nonlinear conjugate gradient-style adaptive momentum. IEEE Trans. Neural Netw. Learn. Syst. 2023</td> </tr><tr> <td>[29]</td> <td class="space">Wolfe, P.: Convergence conditions for ascent methods. SIAM Rev. 11(2), 226-235 (1969) · <a href="/0177.20603" class="nowrap">Zbl 0177.20603</a></td> </tr><tr> <td>[30]</td> <td class="space">Yang, Z., Adaptive stochastic conjugate gradient for machine learning, Expert Syst. Appl., 206, 2022 · <a href="https://doi.org/10.1016/j.eswa.2022.117719" class="nowrap">doi:10.1016/j.eswa.2022.117719</a></td> </tr><tr> <td>[31]</td> <td class="space">Yuan, G.; Wei, Z.; Yang, Y., The global convergence of the Polak-Ribière-Polyak conjugate gradient algorithm under inexact line search for nonconvex functions[J], J. Comput. Appl. Math., 362, 262-275, 2019 · <a href="/1418.90205" class="nowrap">Zbl 1418.90205</a> · <a href="https://doi.org/10.1016/j.cam.2018.10.057" class="nowrap">doi:10.1016/j.cam.2018.10.057</a></td> </tr><tr> <td>[32]</td> <td class="space">Yuan, G.; Lu, J.; Wang, Z., The modified PRP conjugate gradient algorithm under a non-descent line search and its application in the Muskingum model and image restoration problems, Soft. Comput., 25, 8, 5867-5879, 2021 · <a href="/1498.90176" class="nowrap">Zbl 1498.90176</a> · <a href="https://doi.org/10.1007/s00500-021-05580-0" class="nowrap">doi:10.1007/s00500-021-05580-0</a></td> </tr><tr> <td>[33]</td> <td class="space">Yuan, G.; Zhou, Y.; Wang, L., Stochastic bigger subspace algorithms for nonconvex stochastic optimization, IEEE Access, 9, 119818-119829, 2021 · <a href="https://doi.org/10.1109/ACCESS.2021.3108418" class="nowrap">doi:10.1109/ACCESS.2021.3108418</a></td> </tr><tr> <td>[34]</td> <td class="space">Yuan, G., Yang, H., Zhang, M.: Adaptive three-term PRP algorithms without gradient Lipschitz continuity condition for nonconvex functions. Num. Algorithms 91(1), 145-160 (2022) · <a href="/1496.65080" class="nowrap">Zbl 1496.65080</a></td> </tr><tr> <td>[35]</td> <td class="space">Yuan, G.; Jian, A.; Zhang, M., A modified HZ conjugate gradient algorithm without gradient Lipschitz continuous condition for non convex functions, J. Appl. Math. Comput., 68, 6, 4691-4712, 2022 · <a href="/1502.65035" class="nowrap">Zbl 1502.65035</a> · <a href="https://doi.org/10.1007/s12190-022-01724-z" class="nowrap">doi:10.1007/s12190-022-01724-z</a></td> </tr><tr> <td>[36]</td> <td class="space">Zeiler M D. Adadelta: an adaptive learning rate method. arXiv preprint arXiv:1212.5701, 2012</td> </tr><tr> <td>[37]</td> <td class="space">Zhang, L.; Zhou, W.; Li, D., Some descent three-term conjugate gradient methods and their global convergence, Optim. Methods Softw., 22, 4, 697-711, 2007 · <a href="/1220.90094" class="nowrap">Zbl 1220.90094</a> · <a href="https://doi.org/10.1080/10556780701223293" class="nowrap">doi:10.1080/10556780701223293</a></td> </tr><tr> <td>[38]</td> <td class="space">Zhuang, J.; Tang, T.; Ding, Y., Adabelief optimizer: adapting stepsizes by the belief in observed gradients, Adv. Neural. Inf. Process. Syst., 33, 18795-18806, 2020</td> </tr></table> <div class="reference_disclaimer"> This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. 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