Results 11 to 20 of about 1,332 (147)

Spectrum resource allocation method of maximizing transmission rate in cognitive heterogeneous wireless networks [PDF]

open access: yes, 2019
Aiming at the problem that it is difficult to allocate spectrum resources to secondary users efficiently in cognitive heterogeneous wireless networks with heterogeneous spectrum attributes,dynamic channel conditions and diverse service requirements,a ...
Gengzhong ZHENG   +3 more
core   +1 more source

A rapid identification model of mine water inrush based on PSO-XGBoost [PDF]

open access: yes, 2023
Mine water inrush is one of the main threats to mine safety production. Rapid analysis of the cause of water inrush and accurate identification of water inrush source are the key steps of mine water inrush disaster control.
Donglin DONG   +6 more
core   +1 more source

Clustering routing protocol based on improved PSO algorithm in WSN [PDF]

open access: yes, 2019
Aiming at the problem that the location distribution of cluster head nodes filtered by wireless sensor network clustering routing protocol was unbalanced and the data transmission path of forwarding nodes was unreasonable,which would increase the energy ...
Chuyun ZHANG   +3 more
core   +1 more source

Research on Energy Efficiency Optimization Algorithm for Copper Flash Smelting Process Based on Data-driven [PDF]

open access: yes, 2016
铜闪速熔炼工序具有多变量、非线性、大时滞、强耦合、生产波动大的特点,传统的基于机理模型的优化控制系统很难适应多变的运行条件,预测结果偏差较大,影响最终的控制效果。随着计算机技术的发展,复杂工业过程中积累了大量生产数据,为我们从人工智能的角度进行建模与优化控制提供了数据基础。 本论文以某大型闪速炼铜企业的闪速熔炼生产过程为研究对象。为了实现铜闪速熔炼工序中的节能减耗,本文提出了一种满足三大工艺指标(冰铜品位,冰铜温度,渣中铁硅比)约束的能效优化模型:首先 ...
董云成
core  

Research on Program Trading Using the Neural Network Prediction Model Based on QPSO Algorithm [PDF]

open access: yes, 2017
本文致力于以人工神经元网络和智能优化算法为手段,对金融时间序列进行建模、分析和预测,并以该模型的预测模块为核心,编写程序化交易策略,进行程序化交易模拟实验,以实验结果的优异性验证预测模型的有效性及其应用于程序化交易部分的可行性。本文所做主要研究如下: 首先,本文对文中重点引用的粒子群优化算法(ParticlesSwarmOptimization,PSO)的起源、发展、改进和应用进行了详细叙述,尤其是模拟退火粒子群优化算法(SimulatedAnnealing ...
毕叶平
core  

Research on the Application of PSO-BP Neural Network to Credit Risk Assessment for Commercial Banks [PDF]

open access: yes, 2009
信用风险是金融机构面临的最主要的风险之一。在解决商业银行信用风险评估问题时,神经网络的非线性映射能力使其具有独特的优势。通过BP神经网络,可以很好地实现信用指标和信用等级之间的非线性映射关系,从而达到对客户按其指标数据进行信用等级分类的功能。但BP神经网络的参数设置是基于参数空间局部信息的,不是全局最优值,这必将降低BP网络的收敛速度和预测精度。本文分析了具有全局寻优功能的粒子群优化算法(PSO),该算法能够改进传统的BP神经网络学习策略,弥补BP神经网络参数设置的不足 ...
郭阳
core  

基于粒子群优化极限学习机的断路器故障诊断方法研究

open access: yesGaoya dianqi, 2020
断路器动作时,分合闸线圈电流特征能够反映断路器操动机构或者二次回路的运行状态,文中基于分合闸线圈电流特征值创建了样本库,并提出使用粒子群优化学习机进行故障诊断的方法。该方法首先通过粒子群优化算法寻找最优解,即极限学习机模型中输入层与隐含层间的权值以及隐含层的偏置,然后利用最优值进行极限学习机网络训练,最后使用训练好的网络对测试样本进行诊断并验证该方法的有效性。同时搭建了未优化的极限学习机模型和遗传算法优化的极限学习机模型,仿真结果表明,经过粒子群算法优化后的极限学习机能100 ...
张佳, 陈志英, 陈丽安, 陈庆荣
doaj  

Identifier Data Layout Strategy in Identifier Resolution System of Internet of Data [PDF]

open access: yes
The Internet of Data(IoD) is a new information infrastructure proposed to address low transmission efficiency, high coordination costs, and challenging security controls in current internet data resource sharing and interactions. The key to enabling data
ZHOU Chunlei, SONG Jimeng, SHEN Ziqi, YU Han, LEI Jie, LIN Bing
core   +1 more source

基于杆件构形刚度参数均匀化的单层网壳稳定性能优化

open access: yesJianzhu Gangjiegou Jinzhan, 2023
为实现网壳各节点抵抗荷载能力的均匀分布,提升结构稳定承载力,基于网壳结构受力特点,引入了单层网壳结构的杆件构形刚度参数。以结构杆件构形刚度均匀化为目标,将网壳杆件截面尺寸作为优化变量,采用惯性权重改进后的粒子群算法对网壳的杆件截面进行优化配置。优化结果表明,构形刚度方差能较为准确地反映结构的杆件构形刚度均匀程度。通过粒子群算法优化后求得的杆件配置可以使网壳结构接近于等稳定性,最大程度地提升结构的稳定极限承载力。
张澜, 孙建恒, 史若琪, 王军林
doaj  

Research on Exchange Rate Forecasting and Expert Artificial Framework Based on Neural Network Optimized by SAPSO [PDF]

open access: yes, 2012
本文基于前人对汇率预测的成果,展现汇率预测研究现状,通过相关理论评述,提出一种组合式的智能优化算法预测模型。并通过实证证明该智能优化算法预测模型进一步提高了预测精度。本文采用的是非线性模型,即BP神经网络。由于BP神经网络有一些固有的缺陷,为了克服BP神经网络易早熟的缺陷,本文提出采用具有全局寻优能力的粒子群优化算法对BP神经网络进行优化。同时通过理论分析和实验证明,对粒子群优化算法的某些粒子采取模拟退火的方式重新初始化可以增加粒子群的多样性,使粒子群克服在迭代后期失去种群多样性的缺陷。并且通过实证证明,
董丽珺
core  

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