PSO is an algorithm to find the optimal solution(Eberhart and Kennedy, 1995), which optimizes the penalty factor and kernel function parameter in SVR with MSE(Mean Square Error) fitness function, the PSOSVR forecasting model can be obtained by constantly updating and iterating. Similarly, PSOGSASVR and GWOSVR can be established, where PSOGSA is hybrid particle swarm optimization and gravitational search algorithm and GWO is grey wolf optimization algorithm.语法及其他错误
时间: 2024-04-28 07:21:55 浏览: 7
这段话也没有发现任何语法错误。该段介绍了PSO算法及其在SVR中的应用,通过使用MSE适应度函数对SVR中的惩罚因子和核函数参数进行优化,不断更新和迭代可以得到PSOSVR预测模型。类似地,可以建立PSOGSASVR和GWOSVR模型,其中PSOGSA是混合粒子群优化和重力搜索算法,GWO是灰狼优化算法。
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Kennedy, J., & Eberhart, R. (1995). Particle swarm optimization. Proceedings of the IEEE International Conference on Neural Networks, 4, 1942-1948.
这篇论文是粒子群优化算法(Particle Swarm Optimization,PSO)的经典论文,是PSO算法的开山之作。文章从模拟鸟群捕食行为出发,提出了PSO算法的基本思想和算法流程,并介绍了PSO算法的数学模型和参数设置方法。实验结果表明,PSO算法具有较好的全局优化能力和收敛速度,能够有效地解决复杂的优化问题。该论文对于进一步发展和应用PSO算法具有重要的理论意义和实践价值,是PSO算法研究领域必读的经典文献之一。
Please revise the paper:Accurate determination of bathymetric data in the shallow water zone over time and space is of increasing significance for navigation safety, monitoring of sea-level uplift, coastal areas management, and marine transportation. Satellite-derived bathymetry (SDB) is widely accepted as an effective alternative to conventional acoustics measurements over coastal areas with high spatial and temporal resolution combined with extensive repetitive coverage. Numerous empirical SDB approaches in previous works are unsuitable for precision bathymetry mapping in various scenarios, owing to the assumption of homogeneous bottom over the whole region, as well as the limitations of constructing global mapping relationships between water depth and blue-green reflectance takes no account of various confounding factors of radiance attenuation such as turbidity. To address the assumption failure of uniform bottom conditions and imperfect consideration of influence factors on the performance of the SDB model, this work proposes a bottom-type adaptive-based SDB approach (BA-SDB) to obtain accurate depth estimation over different sediments. The bottom type can be adaptively segmented by clustering based on bottom reflectance. For each sediment category, a PSO-LightGBM algorithm for depth derivation considering multiple influencing factors is driven to adaptively select the optimal influence factors and model parameters simultaneously. Water turbidity features beyond the traditional impact factors are incorporated in these regression models. Compared with log-ratio, multi-band and classical machine learning methods, the new approach produced the most accurate results with RMSE value is 0.85 m, in terms of different sediments and water depths combined with in-situ observations of airborne laser bathymetry and multi-beam echo sounder.
回答:本文提出了一种基于底部类型自适应的卫星深度测量(BA-SDB)方法,以解决传统卫星深度测量模型中假设底部均匀的局限性以及不能充分考虑影响反射率的干扰因素,如浊度等。通过基于聚类的底部反射率自适应分割,并采用PSO-LightGBM算法考虑多种因素,实现了对不同沉积物和水深的准确深度估算,与空中激光测深和多波束回声深度声纳联合实测结果相比,均方根误差值达到0.85m,是传统比值法、多波段法和机器学习方法中最准确的方法。