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基于CPA-OSELM的热轧带钢厚度在线预测 被引量:1
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作者 肖思竹 张飞 +2 位作者 黄学忠 肖雄 易忠荣 《科学技术与工程》 北大核心 2022年第22期9686-9694,共9页
为解决自动厚度控制(automatic gauge control, AGC)系统反馈滞后、耦合强、厚度偏差大等问题,提出了一种基于食肉植物算法(carnivorous plant algorithm, CPA)的在线顺序极限学习机(online sequential extreme learning machine, OSELM... 为解决自动厚度控制(automatic gauge control, AGC)系统反馈滞后、耦合强、厚度偏差大等问题,提出了一种基于食肉植物算法(carnivorous plant algorithm, CPA)的在线顺序极限学习机(online sequential extreme learning machine, OSELM)预测算法。首先,基于从现场采集的相关数据,建立了OSELM在线厚度预测模型。然后为了提高模型的准确性及稳定性,采用CPA方法优化OSELM的权重和偏置。在此基础上,运用自学习方法进一步提高模型的预测精度。最后,通过实验验证基于CPA-OSELM预测模型的有效性。实验结果表明:基于CPA-OSELM的方法能够对不同规格带钢的出口厚度进行高精度在线预测,预测结果可用于提升AGC模型的控制精度,为提升带钢产品质量奠定基础。 展开更多
关键词 热轧带钢 在线预测 在线顺序极限学习机(online sequential extreme learning machine OSELM) 食肉植物算法(carnivorous plant algorithm CPA) 自学习
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An Improved War Strategy Optimization Algorithm for Big Data Analytics
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作者 Longjie Han Hui Xu Yain Hu 《国际计算机前沿大会会议论文集》 EI 2023年第1期37-48,共12页
Big data analysis is confronted with the obstacle of high dimensionality in data samples.To address this issue,researchers have devised a multitude of intel-ligent optimization algorithms aimed at enhancing big data a... Big data analysis is confronted with the obstacle of high dimensionality in data samples.To address this issue,researchers have devised a multitude of intel-ligent optimization algorithms aimed at enhancing big data analysis techniques.Among these algorithms is the War Strategy Optimization(WSO)proposed in 2022,which distinguishes itself from other intelligence algorithms through its potent optimization capabilities.Nevertheless,the WSO exhibits limitations in its global search capacity and is susceptible to becoming trapped in local optima when dealing with high-dimensional problems.To surmount these shortcomings and improve the performance of WSO in handling the challenges posed by high dimensionality in big data,this paper introduces an enhanced version of the WSO based on the carnivorous plant algorithm(CPA)and shared niche.The grouping concept and update strategy of CPA are incorporated into WSO,and its update strategy is modified through the introduction of a shared small habitat approach combined with an elite strategy to create a novel improved algorithm.Simula-tion experiments were conducted to compare this new War Strategy Optimization(CSWSO)with WSO,RKWSO,I-GWO,NCHHO and FDB-SDO using 16 test functions.Experimental results demonstrate that the proposed enhanced algorithm exhibits superior optimization accuracy and stability,providing a novel approach to addressing the challenges posed by high dimensionality in big data. 展开更多
关键词 big data analytics war strategy optimization carnivorous plant algorithm shared niche
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