计算机与现代化 ›› 2024, Vol. 0 ›› Issue (11): 70-76.doi: 10.3969/j.issn.1006-2475.2024.11.011

• 人工智能 • 上一篇    下一篇

基于新型多目标浣熊优化算法的BiLSTM-Attention#br# 预测模型及误差分析





  

  1. (1.国网宁夏电力有限公司经济技术研究院,宁夏 银川 750000; 2.宁夏回族自治区电力设计院有限公司,宁夏 银川 750000)
  • 出版日期:2024-11-29 发布日期:2024-12-09
  • 基金资助:
    宁夏回族自治区自然科学基金资助项目(2022AAC02078)

BiLSTM-Attention Prediction Model and Error Analysis #br# Based on Novel Multi-objective Coati Optimization Algorithm

  1. (1. Economic and Technological Research Institute, State Grid Ningxia Electric Power Co., Ltd., Yinchuan 750000, China;
    2. Ningxia Hui Autonomous Region Electric Power Design Institute Co., Ltd., Yinchuan 750000, China)
  • Online:2024-11-29 Published:2024-12-09

摘要: 摘要:工程造价预测在现代工程管理中具有重要意义。然而,受市场波动、人力成本等因素影响,工程造价预测一直具有挑战性。本文提出一种新型多目标浣熊优化算法,并提出基于该算法优化的双向长短期记忆网络(BiLSTM)和注意力机制(Attention)的变电工程造价预测模型。首先,将本文算法与主流多目标优化算法在8个测试问题上进行对比,验证多目标浣熊优化算法的有效性;其次,通过本文算法对预测模型进行优化,实现模型精度提升;通过BiLSTM-Attention模型捕捉历史数据中的潜在关系,提高变电工程造价预测的精度和可靠性;最后,将本文模型与主流的5种模型进行对比,使用某省110 kV变电工程的历史数据作为案例研究。结果显示,本文模型的平均绝对百分比误差为3.71%,相比BP减小了9.82个百分点,相比ANN减小了5.81个百分点,相比LSTM减小了5.40个百分点,相比LSTM-SVR减小2.03个百分点,相比CNN-LSTM减小1.00个百分点。

关键词: 工程造价, 多目标浣熊优化算法, 双向长短期记忆网络, 注意力机制, 预测

Abstract:  Project cost prediction plays an important role in modern project management. However, due to market fluctuations, labor costs, and other factors, project cost forecasting has been challenging. Therefore, a novel multi-objective coati optimization algorithm is proposed, and a bidirectional long short-term memory network (BiLSTM) and attention mechanism optimized based on this algorithm are proposed to predict the cost of substation engineering. Firstly, the proposed algorithm is compared with the mainstream multi-objective optimization algorithm on 8 test problems, and the effectiveness of the multi-objective coati optimization algorithm is verified. Secondly, the proposed algorithm is used to optimize the prediction model to improve the accuracy of the model. The BiLSTM-Attention model captures the potential relationship in historical data to improve the accuracy and reliability of power transformation project cost prediction. Finally, the proposed model is compared with the five mainstream models, and the historical data of a 110 kV power transformation project in a province is used as a case study. The results show that the average absolute percentage error of the proposed model is 3.71%, which is reduced by 9.82 percentage points compared with BP, 5.81 percentage points compared with ANN, 5.40 percentage points compared with LSTM, 2.03 percentage points compared with LSTM-SVR, and 1.00 percentage points compared with CNN-LSTM.

Key words: engineering cost, multi-objective coati optimization algorithm, BiLSTM, attention mechanism, prediction ,

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