MOALG: A Metaheuristic Hybrid of Multi-Objective Ant Lion Optimizer and Genetic Algorithm for Solving Design Problems

This study proposes a hybridization of two efficient algorithm’s Multi-objective Ant Lion Optimizer Algorithm(MOALO)which is a multi-objective enhanced version of the Ant Lion Optimizer Algorithm(ALO)and the Genetic Algorithm(GA).MOALO version has been employed to address those problems containing many objectives and an archive has been employed for retaining the non-dominated solutions.The uniqueness of the hybrid is that the operators like mutation and crossover of GA are employed in the archive to update the solutions and later those solutions go through the process of MOALO.A first-time hybrid of these algorithms is employed to solve multi-objective problems.The hybrid algorithm overcomes the limitation of ALO of getting caught in the local optimum and the requirement of more computational effort to converge GA.To evaluate the hybridized algorithm’s performance,a set of constrained,unconstrained test problems and engineering design problems were employed and compared with five well-known computational algorithms-MOALO,Multi-objective Crystal Structure Algorithm(MOCryStAl),Multi-objective Particle Swarm Optimization(MOPSO),Multi-objective Multiverse Optimization Algorithm(MOMVO),Multi-objective Salp Swarm Algorithm(MSSA).The outcomes of five performance metrics are statistically analyzed and the most efficient Pareto fronts comparison has been obtained.The proposed hybrid surpasses MOALO based on the results of hypervolume(HV),Spread,and Spacing.So primary objective of developing this hybrid approach has been achieved successfully.The proposed approach demonstrates superior performance on the test functions,showcasing robust convergence and comprehensive coverage that surpasses other existing algorithms.

Ant Lion Optimization Approach for Load Frequency Control of Multi-Area Interconnected Power Systems

This work proposes a novel nature-inspired algorithm called Ant Lion Optimizer (ALO). The ALO algorithm mimics the search mechanism of antlions in nature. A time domain based objective function is established to tune the parameters of the PI controller based LFC, which is solved by the proposed ALO algorithm to reach the most convenient solutions. A three-area interconnected power system is investigated as a test system under various loading conditions to confirm the effectiveness of the suggested algorithm. Simulation results are given to show the enhanced performance of the developed ALO algorithm based controllers in comparison with Genetic Algorithm (GA), Particle Swarm Optimization (PSO), Bat Algorithm (BAT) and conventional PI controller. These results represent that the proposed BAT algorithm tuned PI controller offers better performance over other soft computing algorithms in conditions of settling times and several performance indices.

考虑特征关联性的ALO-CNN-LSTM短期负荷预测

针对短期负荷预测模型未充分考虑负荷的时序性和非线性以及历史负荷的高冗余性,提出一种考虑特征关联性的ALO-CNN-LSTM短期负荷预测模型。采用卷积神经网络(CNN)获取负荷时间序列高维空间特征。采用Copula函数对天气、湿度等气象因素序列与高维空间特征进行关联性分析,选出相关性较高的特征参量,采用长短期记忆网络(LSTM)获取高维时域特征,同时结合蚁狮优化(ALO)算法训练模型并确定最佳参数,提高模型的收敛速度和预测精度。以电工数学建模竞赛负荷为例进行仿真分析,并对比不同的优化算法和预测模型。仿真结果表明:模型具有较快的收敛速度和较高预测精度,验证模型的有效性以及实用性。

Hybridization of Fuzzy and Hard Semi-Supervised Clustering Algorithms Tuned with Ant Lion Optimizer Applied to Higgs Boson Search

This paper focuses on the unsupervised detection of the Higgs boson particle using the most informative features and variables which characterize the“Higgs machine learning challenge 2014”data set.This unsupervised detection goes in this paper analysis through 4 steps:(1)selection of the most informative features from the considered data;(2)definition of the number of clusters based on the elbow criterion.The experimental results showed that the optimal number of clusters that group the considered data in an unsupervised manner corresponds to 2 clusters;(3)proposition of a new approach for hybridization of both hard and fuzzy clustering tuned with Ant Lion Optimization(ALO);(4)comparison with some existing metaheuristic optimizations such as Genetic Algorithm(GA)and Particle Swarm Optimization(PSO).By employing a multi-angle analysis based on the cluster validation indices,the confusion matrix,the efficiencies and purities rates,the average cost variation,the computational time and the Sammon mapping visualization,the results highlight the effectiveness of the improved Gustafson-Kessel algorithm optimized withALO(ALOGK)to validate the proposed approach.Even if the paper gives a complete clustering analysis,its novel contribution concerns only the Steps(1)and(3)considered above.The first contribution lies in the method used for Step(1)to select the most informative features and variables.We used the t-Statistic technique to rank them.Afterwards,a feature mapping is applied using Self-Organizing Map(SOM)to identify the level of correlation between them.Then,Particle Swarm Optimization(PSO),a metaheuristic optimization technique,is used to reduce the data set dimension.The second contribution of thiswork concern the third step,where each one of the clustering algorithms as K-means(KM),Global K-means(GlobalKM),Partitioning AroundMedoids(PAM),Fuzzy C-means(FCM),Gustafson-Kessel(GK)and Gath-Geva(GG)is optimized and tuned with ALO.

An Automatic Threshold Selection Using ALO for Healthcare Duplicate Record Detection with Reciprocal Neuro-Fuzzy Inference System

ESystems based on EHRs(Electronic health records)have been in use for many years and their amplified realizations have been felt recently.They still have been pioneering collections of massive volumes of health data.Duplicate detections involve discovering records referring to the same practical components,indicating tasks,which are generally dependent on several input parameters that experts yield.Record linkage specifies the issue of finding identical records across various data sources.The similarity existing between two records is characterized based on domain-based similarity functions over different features.De-duplication of one dataset or the linkage of multiple data sets has become a highly significant operation in the data processing stages of different data mining programmes.The objective is to match all the records associated with the same entity.Various measures have been in use for representing the quality and complexity about data linkage algorithms,and many other novel metrics have been introduced.An outline of the problem existing in themeasurement of data linkage and de-duplication quality and complexity is presented.This article focuses on the reprocessing of health data that is horizontally divided among data custodians,with the purpose of custodians giving similar features to sets of patients.The first step in this technique is about an automatic selection of training examples with superior quality from the compared record pairs and the second step involves training the reciprocal neuro-fuzzy inference system(RANFIS)classifier.Using the Optimal Threshold classifier,it is presumed that there is information about the original match status for all compared record pairs(i.e.,Ant Lion Optimization),and therefore an optimal threshold can be computed based on the respective RANFIS.Febrl,Clinical Decision(CD),and Cork Open Research Archive(CORA)data repository help analyze the proposed method with evaluated benchmarks with current techniques.

采用多目标蚁狮优化算法(MALO)的环境经济调度

本文针对传统优化算法求解电力系统环境经济调度(EED)容易陷入局部最优解的问题,采用了一种多目标进化算法——多目标蚁狮优化算法(MALO),通过在计及阀点效应和没有阀点效应的测试案例上实现。实验表明,MALO算法在可行域内更容易搜索出全局最优解。

基于EEMD-Kmeans-ALO-LSTM的短期光伏功率预测

光伏功率预测对电网调度具有重要意义。针对光伏功率数据具有较强波动性和不稳定性的特点,提出了一种基于集成经验模态分解(ensemble empirical mode decomposition, EEMD)、K均值聚类算法(Kmeans clustering algorithm, Kmeans)和蚁狮优化(ant lion optimization, ALO)算法优化的长短期记忆神经网络(long short-term memory network, LSTM)的光伏功率组合预测模型。对光伏功率数据进行EEMD分解,得到相应的本征模态分量(intrinsic mode function,IMF)和残差项;引入Kmeans聚类对分解后的序列重构,降低序列复杂度和分量数量;将重构后的子序列输入经ALO优化的LSTM模型进行预测,并将各序列预测结果简单加和作为最终预测值。与目前应用较广泛的EEMD-LSTM模型对比,表明EEMD-Kmeans-LSTM和EEMD-Kmeans-ALO-LSTM模型的预测精度均得到一定程度的提高。

基于EEMD-ALOCO-SVM模型的光伏功率短期区间预测

光伏发电功率的预测方法目前分为点值预测和区间预测两类,但点值预测方法难以适应光伏功率的随机性和波动性,因此,该文构建一种基于集合经验模态分解(EEMD)和混沌蚁狮算法(ALOCO)的支持向量机(SVM)光伏功率区间短期预测模型。首先,通过灰色关联度筛选出不同环境条件的相似日样本集,并利用EEMD将光伏出力序列分解成不同的本征模态函数;然后,利用混沌蚁狮算法对SVM的误差惩罚因子C和核函数参数γ进行优化,并利用分位数回归法对光伏的输出功率进行短期区间预测;最后,通过算例数据验证所建立模型的有效性。

基于蚁狮优化高斯过程回归的锂电池剩余使用寿命预测

迅速获取精确的锂电池的剩余使用寿命和健康状态,对于维持锂电池的可靠性至关重要。针对锂电池剩余使用寿命(remaining useful life,RUL)预测精度较低,传统的高斯过程回归(Gaussian process regression,GPR)模型的超参数寻优结果不理想、预测效果差等问题,使用蚁狮优化算法(ant-lion optimization algorithm,ALO)对高斯过程回归的超参数进行寻优,实现锂电池剩余使用寿命的精确预测。首先,根据电池充电过程中电池电压的循环曲线,提取了6个参数作为电池的健康因子,然后采用Pearson相关系数验证健康因子与电池容量的相关关系,最终选出平均放电电压、恒流充电阶段电池存储的充电量、整个充电阶段电池存储的充电量以及时间积分中的放电温度这4个参数作为健康因子。最后,利用支持向量回归(support vector regression,SVR)、GPR和ALO-GPR对锂电池RUL进行预测,对各项指标进行比较分析。并将本工作所提出的模型与其他文献所提出的模型进行了比较。通过NASA锂电池数据集验证了模型的有效性,实验结果表明,所提出ALO-GPR的RUL预测模型误差小,均方根误差控制在1%以内,平均绝对误差控制在0.65%以内,泛化性强,具有良好的应用前景。

基于ALO-SVR的锂离子电池剩余使用寿命预测

锂离子电池(Lithium-ion batteries,LIBs)的剩余使用寿命(remaining useful life,RUL)预测在电池故障预测与健康管理(prognostics and health management,PHM)中起着十分重要的作用。准确预测电池RUL可以提前对存在安全隐患的电池进行维护和更换,以确保储能系统安全可靠。文章提出一种基于蚁狮优化和支持向量回归(ant lion optimization and support vector regression,ALO-SVR)的方法,可有效提高锂离子电池RUL预测的准确性。SVR方法在处理小样本数据和时间序列分析上具有优势,但SVR方法在内核参数选择上存在困难。因此,文章利用ALO算法优化SVR核参数,随后采用PCoE(NASA ames prognostics center of excellence)和CALCE(center for advanced life cycle engineering)电池数据集对所提方法进行仿真验证。通过对比SVR方法,ALO-SVR方法可以提供更精确的电池RUL预测结果,能有效提高锂离子电池剩余使用寿命预测的准确性和鲁棒性。

一种多策略改进鲸鱼优化算法的混沌系统参数辨识

针对混沌系统参数辨识精度不高的问题,以鲸鱼优化算法(whale optimization algorithm,WOA)为基础,提出一种多策略改进鲸鱼优化算法(multi-strategy improved whale optimization algorithm,MIWOA)。采用Chebyshev混沌映射选取高质量初始种群,采用非线性收敛因子和自适应权重,提高算法收敛速度,为了避免算法陷入局部最优,动态选择自适应t分布或蚁狮优化算法更新后期位置,提高处理局部极值的能力。通过对10个基准函数和高维测试函数进行仿真试验,表明MIWOA具有良好的稳定性和收敛精度。将MIWOA应用于辨识Rossler和Lu混沌系统参数,仿真结果优于现有成果,表明本文MIWOA辨识混沌系统参数的高效性和实用性。

基于KPCA-ALO-WLSSVM的埋地管道外腐蚀速率预测

为提高埋地油气管道外腐蚀速率预测精度,建立了一种基于KPCA-ALO-WLSSVM的埋地管道外腐蚀速率预测模型。以沿川气东送管线所做埋片试验获取的数据为例,首先利用核主成分分析(KPCA)对管道外腐蚀影响因素进行处理,以重构的综合指标作为模型的输入值;然后利用加权最小二乘支持向量机(WLSSVM)对外腐蚀因素和速率进行仿真建模,并利用蚁狮优化算法(ALO)对WLSSVM建模中的参数进行寻优。结果表明:KPCA提取了累计贡献率为97.84%的3个主元,减化了建模过程的复杂性;所构建的ALO-WLSSVM外腐蚀速率预测模型的平均相对误差为4.390%,均方根误差为0.276,各项指标均优于其对比模型,证明了本模型具有更好的学习性和更高的拟合效果。

一种基于ALO-SVM算法的入侵检测方法

入侵检测一直是网络安全领域的热点研究方向,为了提高网络入侵检测的速度和准确性,提出一种在PCA降维的基础上,基于蚁狮优化算法(The Ant Lion Optimizer,ALO)和支持向量机(Support Vector Machine,SVM)相结合的入侵检测方法。该算法首先利用主成分分析法(Principal Component Analysis,PCA)对数据进行降维处理以去除冗余数据,并利用ALO算法优化SVM的参数,然后根据优化后的SVM建立入侵检测模型,最后利用由PCA处理过的KDDCUP99数据集验证检测模型。实验结果表明,所提方法相较于简单的ALO优化SVM和PSO-SVM算法,在提高正确率的基础上,检测速度有显著提高。

基于风速误差校正和ALO-LSSVM的风电功率预测

风资源的随机波动性引起的相位滞后性问题,导致风电功率预测精度不高,尤其是风速变化较快时,滞后性引起的预测误差较大。考虑到风速波动与风功率变化密切相关,提出一种非参数核密度估计和数值天气预报(NWP)相结合的方法,并对预测风速误差进行校正,改善了预测风速的相位滞后性;然后将校正后的风速和风功率作为输入数据进行风电功率预测;采用蚁狮算法(ALO)优化最小二乘支持向量机(LSSVM)参数,从而建立基于风速误差校正和ALO-LSSVM组合的风电功率预测模型。算例结果表明,所提方法风功率预测精度更高。

基于ALO-ENN算法的洪灾评估模型及应用

针对洪灾评估缺乏评判标准及Elman神经网络(ENN)初始权值、阈值难以确定的不足,利用洪灾各影响因子序列均值及标准差构建洪灾评估标准,并基于该标准采用随机内插和随机选取的方法构造样本对ENN网络进行训练及检验。利用蚁狮优化(ALO)算法对ENN网络权值、阈值进行全局寻优,提出基于ALO-ENN算法的洪灾评估模型,并构建PSO-ENN、ENN评估模型作对比,以我国1950—2013年洪灾评估为例进行实例研究。结果表明:1ALO算法寻优能力优于PSO算法,具有较好的收敛精度、稳健性能和全局寻优能力,利用ALO算法寻优ENN网络初始权值和阈值,可有效提高ENN模型的评估精度及泛化能力;2ALO-ENN模型对全国64年的洪灾评估结果为特大洪灾10次,重大洪灾4次,较大洪灾25次,洪灾12次和一般洪灾13次,洪灾随时间呈增加趋势,且增加趋势显著。

Swarm Optimization and Machine Learning for Android Malware Detection

Malware Security Intelligence constitutes the analysis of applications and their associated metadata for possible security threats.Application Programming Interfaces(API)calls contain valuable information that can help with malware identification.The malware analysis with reduced feature space helps for the efficient identification of malware.The goal of this research is to find the most informative features of API calls to improve the android malware detection accuracy.Three swarm optimization methods,viz.,Ant Lion Optimization(ALO),Cuckoo Search Optimization(CSO),and Firefly Optimization(FO)are applied to API calls using auto-encoders for identification of most influential features.The nature-inspired wrapperbased algorithms are evaluated using well-known Machine Learning(ML)classifiers such as Linear Regression(LR),Decision Tree(DT),Random Forest(RF),K-Nearest Neighbor(KNN)&SupportVector Machine(SVM).A hybrid Artificial Neuronal Classifier(ANC)is proposed for improving the classification of android malware.The experimental results yielded an accuracy of 98.87%with just seven features out of hundred API call features,i.e.,a massive 93%of data optimization.

利用新型群体智能优化算法研究微震震源定位

引入并介绍6种新型群体智能优化算法(灰狼算法、鲸鱼优化算法、蝗虫优化算法、麻雀搜索算法、蚁狮算法、蜻蜓算法)的仿生原理、核心计算公式及优化特性,在经典到时差模型基础上设计一种新型微震震源反演数学模型,利用仿真的矿山微震震源正反演数据对比分析6种方法的性能差异。结合实际矿山人工爆破数据,通过6个统计指标从精度、收敛速度、稳定性等多个角度测试这6种新型群体智能优化算法在微震震源定位中的有效性和可靠程度。

基于改进蚁狮优化的贝叶斯网络结构学习算法

为了改善小数据集下BN结构学习中对数据利用不充分的缺陷,提高贝叶斯结构学习算法的寻优效率,提出基于改进蚁狮优化的贝叶斯网络结构学习算法。首先,通过互信息约束初步构建网络,并对蚁狮算法初始化;其次,为了有效利用小数据集,用改进的sigmoid函数对迭代中的矩阵元素进行二值转换;为了进一步提高蚁狮算法的搜索效率,用生物地理算法中的迁移、变异、清除算子抽取更换个别蚂蚁;最后,结合蚁狮算法的更新机制寻找最优解。实验结果表明,文中算法寻优效率高、收敛速度快,能跳出局部最优,具有更高的准确性。

改进蚁狮优化算法的永磁同步电机多参数辨识

为提高永磁同步电机参数辨识的精度,提出一种基于Tent映射和正态云模型的改进蚁狮优化算法辨识永磁同步电机参数。首先,在蚂蚁和蚁狮初始化阶段引入Tent映射使初始种群更加均匀地分布于搜素空间;其次,在蚂蚁位置更新阶段以全局最优个体为目标,使用正态云模型更新精英蚁狮的位置;最后,根据迭代次数的增长自适应缩小云滴的生成范围,提升算法的全局收敛能力和精度。仿真实验结果表明,改进蚁狮优化算法能更加精确、迅速地辨识永磁同步电机参数。

改进蚁狮优化算法及其工程应用

针对蚁狮优化算法(ALO)在求解工程优化问题时易陷入局部最优及收敛速度慢等缺陷,提出一种基于Levy飞行和差分进化的改进蚁狮优化算法(LDALO)。改进算法对ALO中的蚂蚁进行差分进化操作,从而改善种群多样性,避免算法陷入局部最优并提高算法全局搜索能力。精英引导的Levy飞行被用于蚂蚁位置更新,以加快算法收敛速度。改进算法还在蚁狮捕食蚂蚁后对蚁狮进行差分变异,以提高算法的寻优精度。仿真实验基于10个基准函数进行,其结果显示LDALO较其他对比算法收敛速度更快,寻优精度更高。在无线传感器网络覆盖优化、压力容器设计、拉压弹簧设计等工程优化问题中的应用,验证了LDALO的适用性和有效性。