Adaptive pruning-based Newton's method for distributed learning

• URL: http://arxiv.org/abs/2308.10154v4
• Date: Tue, 17 Dec 2024 06:45:36 GMT
• Title: Adaptive pruning-based Newton's method for distributed learning
• Authors: Shuzhen Chen, Yuan Yuan, Youming Tao, Tianzhu Wang, Zhipeng Cai, Dongxiao Yu,
• Abstract summary: This paper presents a novel and efficient algorithm named Distributed Adaptive Newton Learning (textttDANL)<n>textttDANL attains a linear convergence rate while efficiently adapting to available resources and keeping high efficiency.<n>Experiments demonstrate that textttDANL achieves linear convergence with efficient communication and strong performance across different datasets.
• Score: 14.885388389215587
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Newton's method leverages curvature information to boost performance, and thus outperforms first-order methods for distributed learning problems. However, Newton's method is not practical in large-scale and heterogeneous learning environments, due to obstacles such as high computation and communication costs of the Hessian matrix, sub-model diversity, staleness of training, and data heterogeneity. To overcome these obstacles, this paper presents a novel and efficient algorithm named Distributed Adaptive Newton Learning (\texttt{DANL}), which solves the drawbacks of Newton's method by using a simple Hessian initialization and adaptive allocation of training regions. The algorithm exhibits remarkable convergence properties, which are rigorously examined under standard assumptions in stochastic optimization. The theoretical analysis proves that \texttt{DANL} attains a linear convergence rate while efficiently adapting to available resources and keeping high efficiency. Furthermore, \texttt{DANL} shows notable independence from the condition number of the problem and removes the necessity for complex parameter tuning. Experiments demonstrate that \texttt{DANL} achieves linear convergence with efficient communication and strong performance across different datasets.

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