Journal of Computer Applications ›› 2025, Vol. 45 ›› Issue (12): 3925-3930.DOI: 10.11772/j.issn.1001-9081.2024121756

• Advanced computing • Previous Articles     Next Articles

Combined prediction model optimized by transit search algorithm

Jun YAO, Ming LIU   

  1. College of Communication and Information Engineering,Xi’an University of Science and Technology,Xi’an Shaanxi 710054,China
  • Received:2024-12-13 Revised:2025-03-10 Accepted:2025-03-17 Online:2025-03-24 Published:2025-12-10
  • Contact: Jun YAO
  • About author:YAO Jun, born in 1972, M. S., associate professor. His research interests include network security, broadband data networks, cloud computing.
    LIU Ming, born in 1997, M. S. candidate. Her research interests include cloud computing, resource scheduling.
  • Supported by:
    China University Industry-University-Research Innovation Fund(2021KSA05005)

基于凌日搜索算法优化的组合预测模型

姚军, 刘明   

  1. 西安科技大学 通信与信息工程学院,西安 710054
  • 通讯作者: 姚军
  • 作者简介:姚军(1972—),男,陕西西安人,副教授,硕士,主要研究方向:网络安全、宽带数据网络、云计算
    刘明(1997—),女,内蒙古呼伦贝尔人,硕士研究生,主要研究方向:云计算、资源调度。
  • 基金资助:
    中国高校产学研创新基金资助项目(2021KSA05005)

Abstract:

Facing resource wastage and performance challenges in cloud platform resource scheduling, especially the low prediction accuracy of cloud resource prediction due to the difficulty in selecting hyperparameters manually for Long Short-Term Memory (LSTM) network models, a combined prediction model optimized by Transit Search (TS) algorithm named TS-ARIMA-LSTM was proposed. The combined prediction model integrates the AutoRegressive Integrated Moving Average (ARIMA) model with the LSTM model. Firstly, TS algorithm was used to optimize the hyperparameters of the LSTM model, including the neuron counts in three layers and the transmission delays. Then, the optimized LSTM model was used for preliminary prediction, and the ARIMA model was used to correct the error of the LSTM prediction. Finally, the prediction results of the ARIMA and LSTM models were combined to obtain the final prediction value. Experimental results on the public Alibaba Cloud dataset Cluster-trace-v2018 show that the proposed model optimized by the TS algorithm improves the prediction accuracy significantly compared to the traditional single prediction models ARIMA and LSTM, as well as the combined prediction model ARIMA-LSTM. Specifically, compared to the best-performing ARIMA-LSTM model among the baseline models, the proposed model has the Mean Square Error (MSE) decreased by 49.72%, the Root Mean Square Error (RMSE) decreased by 29.24%, and the Mean Absolute Error (MAE) decreased by 33.94%. It can be seen that the application of the proposed model in cloud resource prediction demonstrates high prediction accuracy, offering a new pathway for improving cloud platform task scheduling strategies.

Key words: load prediction, Transit Search (TS), cloud computing, parameter optimization, Long Short-Term Memory (LSTM) network, AutoRegressive Integrated Moving Average (ARIMA)

摘要:

针对云平台资源调度面临的资源浪费和性能挑战,尤其是长短期记忆(LSTM)网络模型的超参数人工选值困难导致的云资源预测精度不足的问题,提出一种基于凌日搜索(TS)算法优化的组合预测模型TS-ARIMA-LSTM。该组合预测模型为差分自回归移动平均(ARIMA)模型和LSTM模型结合。首先,使用TS算法对LSTM模型的超参数进行寻优,包括3层神经元数和滞后值;其次,使用寻优后的LSTM模型进行初步预测,并使用ARIMA模型修正LSTM预测的误差;最后,将ARIMA模型和LSTM模型的预测结果结合得到最终的预测值。在阿里云公开数据集Cluster-trace-v2018上的实验结果显示,相较于传统的单一预测模型ARIMA和LSTM,以及组合预测模型ARIMA-LSTM,基于TS算法优化的所提模型在预测精度上有显著提升,具体表现为:与基线最优的ARIMA-LSTM模型相比,所提模型的均方误差(MSE)减小了49.72%,均方根误差(RMSE)减小了29.24% ,而平均绝对误差(MAE)减小了33.94%。可见,该模型在云资源预测中的应用展现了较高的预测精度,为改善云平台的任务调度策略提供了新路径。

关键词: 负载预测, 凌日搜索, 云计算, 参数寻优, 长短期记忆网络, 差分自回归移动平均

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