期刊文献+
共找到3,037篇文章
< 1 2 152 >
每页显示 20 50 100
带状疱疹后wolf’s同位反应1例
1
作者 沈丹谦 马丽俐 《中国乡村医药》 2024年第11期49-50,共2页
同位反应描述了一种在先前已治愈的无关皮肤病的部位出现不同皮肤病的现象。Wolf在1988年将这种现象命名为“等位反应”,后在1995年改名为“同位反应”。带状疱疹后同位反应是最常见报道的同位反应^([1])。现回顾带状疱疹后wolf’s同位... 同位反应描述了一种在先前已治愈的无关皮肤病的部位出现不同皮肤病的现象。Wolf在1988年将这种现象命名为“等位反应”,后在1995年改名为“同位反应”。带状疱疹后同位反应是最常见报道的同位反应^([1])。现回顾带状疱疹后wolf’s同位反应患者1例资料,报道如下。1病历摘要患者男,27岁,右侧胸背部红斑丘疹伴瘙痒、疼痛1月余。2021年3月因重度再生障碍性贫血于我院行异基因造血干细胞移植术。 展开更多
关键词 wolf’s同位反应 湿疹样皮炎 带状疱疹
下载PDF
基于Wolf的数字化变电站通信网异常流量检测系统
2
作者 何肖蒙 王颖舒 +1 位作者 袁舒 肖小兵 《电子设计工程》 2024年第7期110-114,共5页
数字化变电站通信网异常流量检测过程中易陷入局部最优,导致检测结果不精准。为了解决这个问题,提出了基于Wolf的数字化变电站通信网异常流量检测系统。构建系统总体结构,分析通信网流量异常频域特征。通过采集异常流量模块解析目的物... 数字化变电站通信网异常流量检测过程中易陷入局部最优,导致检测结果不精准。为了解决这个问题,提出了基于Wolf的数字化变电站通信网异常流量检测系统。构建系统总体结构,分析通信网流量异常频域特征。通过采集异常流量模块解析目的物理地址,检查组件为系统提供信息交互引擎。使用Wolf算法将混沌序列映射到数字化变电站通信网异常流量多维相空间,设置控制收敛因子,避免检测结果陷入局部最优。计算异常流量特征值的熵,判断流量异常类型。实验结果表明,该系统一次设备异常流量检测结果与实际数据一致,二次设备异常流量检测结果与实际数据存在最大为2 Mb/s的误差,说明使用所设计系统检测结果精准。 展开更多
关键词 wolf算法 混沌映射 变电站通信网 异常流量 检测
下载PDF
Enhancing Hyper-Spectral Image Classification with Reinforcement Learning and Advanced Multi-Objective Binary Grey Wolf Optimization
3
作者 Mehrdad Shoeibi Mohammad Mehdi Sharifi Nevisi +3 位作者 Reza Salehi Diego Martín Zahra Halimi Sahba Baniasadi 《Computers, Materials & Continua》 SCIE EI 2024年第6期3469-3493,共25页
Hyperspectral(HS)image classification plays a crucial role in numerous areas including remote sensing(RS),agriculture,and the monitoring of the environment.Optimal band selection in HS images is crucial for improving ... Hyperspectral(HS)image classification plays a crucial role in numerous areas including remote sensing(RS),agriculture,and the monitoring of the environment.Optimal band selection in HS images is crucial for improving the efficiency and accuracy of image classification.This process involves selecting the most informative spectral bands,which leads to a reduction in data volume.Focusing on these key bands also enhances the accuracy of classification algorithms,as redundant or irrelevant bands,which can introduce noise and lower model performance,are excluded.In this paper,we propose an approach for HS image classification using deep Q learning(DQL)and a novel multi-objective binary grey wolf optimizer(MOBGWO).We investigate the MOBGWO for optimal band selection to further enhance the accuracy of HS image classification.In the suggested MOBGWO,a new sigmoid function is introduced as a transfer function to modify the wolves’position.The primary objective of this classification is to reduce the number of bands while maximizing classification accuracy.To evaluate the effectiveness of our approach,we conducted experiments on publicly available HS image datasets,including Pavia University,Washington Mall,and Indian Pines datasets.We compared the performance of our proposed method with several state-of-the-art deep learning(DL)and machine learning(ML)algorithms,including long short-term memory(LSTM),deep neural network(DNN),recurrent neural network(RNN),support vector machine(SVM),and random forest(RF).Our experimental results demonstrate that the Hybrid MOBGWO-DQL significantly improves classification accuracy compared to traditional optimization and DL techniques.MOBGWO-DQL shows greater accuracy in classifying most categories in both datasets used.For the Indian Pine dataset,the MOBGWO-DQL architecture achieved a kappa coefficient(KC)of 97.68%and an overall accuracy(OA)of 94.32%.This was accompanied by the lowest root mean square error(RMSE)of 0.94,indicating very precise predictions with minimal error.In the case of the Pavia University dataset,the MOBGWO-DQL model demonstrated outstanding performance with the highest KC of 98.72%and an impressive OA of 96.01%.It also recorded the lowest RMSE at 0.63,reinforcing its accuracy in predictions.The results clearly demonstrate that the proposed MOBGWO-DQL architecture not only reaches a highly accurate model more quickly but also maintains superior performance throughout the training process. 展开更多
关键词 Hyperspectral image classification reinforcement learning multi-objective binary grey wolf optimizer band selection
下载PDF
Energy-Saving Distributed Flexible Job Shop Scheduling Optimization with Dual Resource Constraints Based on Integrated Q-Learning Multi-Objective Grey Wolf Optimizer
4
作者 Hongliang Zhang Yi Chen +1 位作者 Yuteng Zhang Gongjie Xu 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第8期1459-1483,共25页
The distributed flexible job shop scheduling problem(DFJSP)has attracted great attention with the growth of the global manufacturing industry.General DFJSP research only considers machine constraints and ignores worke... The distributed flexible job shop scheduling problem(DFJSP)has attracted great attention with the growth of the global manufacturing industry.General DFJSP research only considers machine constraints and ignores worker constraints.As one critical factor of production,effective utilization of worker resources can increase productivity.Meanwhile,energy consumption is a growing concern due to the increasingly serious environmental issues.Therefore,the distributed flexible job shop scheduling problem with dual resource constraints(DFJSP-DRC)for minimizing makespan and total energy consumption is studied in this paper.To solve the problem,we present a multi-objective mathematical model for DFJSP-DRC and propose a Q-learning-based multi-objective grey wolf optimizer(Q-MOGWO).In Q-MOGWO,high-quality initial solutions are generated by a hybrid initialization strategy,and an improved active decoding strategy is designed to obtain the scheduling schemes.To further enhance the local search capability and expand the solution space,two wolf predation strategies and three critical factory neighborhood structures based on Q-learning are proposed.These strategies and structures enable Q-MOGWO to explore the solution space more efficiently and thus find better Pareto solutions.The effectiveness of Q-MOGWO in addressing DFJSP-DRC is verified through comparison with four algorithms using 45 instances.The results reveal that Q-MOGWO outperforms comparison algorithms in terms of solution quality. 展开更多
关键词 Distributed flexible job shop scheduling problem dual resource constraints energy-saving scheduling multi-objective grey wolf optimizer Q-LEARNING
下载PDF
Enhanced Wolf Pack Algorithm (EWPA) and Dense-kUNet Segmentation for Arterial Calcifications in Mammograms
5
作者 Afnan M.Alhassan 《Computers, Materials & Continua》 SCIE EI 2024年第2期2207-2223,共17页
Breast Arterial Calcification(BAC)is a mammographic decision dissimilar to cancer and commonly observed in elderly women.Thus identifying BAC could provide an expense,and be inaccurate.Recently Deep Learning(DL)method... Breast Arterial Calcification(BAC)is a mammographic decision dissimilar to cancer and commonly observed in elderly women.Thus identifying BAC could provide an expense,and be inaccurate.Recently Deep Learning(DL)methods have been introduced for automatic BAC detection and quantification with increased accuracy.Previously,classification with deep learning had reached higher efficiency,but designing the structure of DL proved to be an extremely challenging task due to overfitting models.It also is not able to capture the patterns and irregularities presented in the images.To solve the overfitting problem,an optimal feature set has been formed by Enhanced Wolf Pack Algorithm(EWPA),and their irregularities are identified by Dense-kUNet segmentation.In this paper,Dense-kUNet for segmentation and optimal feature has been introduced for classification(severe,mild,light)that integrates DenseUNet and kU-Net.Longer bound links exist among adjacent modules,allowing relatively rough data to be sent to the following component and assisting the system in finding higher qualities.The major contribution of the work is to design the best features selected by Enhanced Wolf Pack Algorithm(EWPA),and Modified Support Vector Machine(MSVM)based learning for classification.k-Dense-UNet is introduced which combines the procedure of Dense-UNet and kU-Net for image segmentation.Longer bound associations occur among nearby sections,allowing relatively granular data to be sent to the next subsystem and benefiting the system in recognizing smaller characteristics.The proposed techniques and the performance are tested using several types of analysis techniques 826 filled digitized mammography.The proposed method achieved the highest precision,recall,F-measure,and accuracy of 84.4333%,84.5333%,84.4833%,and 86.8667%when compared to other methods on the Digital Database for Screening Mammography(DDSM). 展开更多
关键词 Breast arterial calcification cardiovascular disease semantic segmentation transfer learning enhanced wolf pack algorithm and modified support vector machine
下载PDF
标准Wolfe线搜索下改进的HS共轭梯度法
6
作者 王森森 郑宗剑 韩信 《四川文理学院学报》 2024年第2期50-55,共6页
通过对现有的HS共轭梯度法进行修正,提出一个具有下降性质的改进型HS共轭梯度法,该算法的下降性质得到论证.在标准Wolfe线搜索条件下,证明了改进的HS算法具有全局收敛性.最后,通过数值实验结果的对比,发现新算法数值效果是优异的.
关键词 无约束优化 共轭梯度法 标准wolfe线搜索 全局收敛性
下载PDF
Wolfe线搜下改进的FR型谱共轭梯度法
7
作者 王森森 韩信 吴祥标 《遵义师范学院学报》 2024年第5期80-84,共5页
谱共轭梯度法作为经典共轭梯度法的推广,它是求解大规模无约束优化问题的有效方法之一.基于标准Wolfe线搜索准则和充分下降性条件,提出了一种具有充分下降性质的FR型谱共轭梯度法.在温和的假设条件下,该算法具有全局收敛性.最后,将新算... 谱共轭梯度法作为经典共轭梯度法的推广,它是求解大规模无约束优化问题的有效方法之一.基于标准Wolfe线搜索准则和充分下降性条件,提出了一种具有充分下降性质的FR型谱共轭梯度法.在温和的假设条件下,该算法具有全局收敛性.最后,将新算法与现存的修正FR型谱共轭梯度法进行比较,数值结果表明提出的算法是极其有效的. 展开更多
关键词 无约束优化 谱共轭梯度法 充分下降性 标准wolfe线搜索准则 全局收敛性
下载PDF
The Analysis of Wolf Imagery in The Company of Wolves
8
作者 WANG Wen-ke 《Journal of Literature and Art Studies》 2024年第7期607-611,共5页
Imagery analysis is a commonly used analytical method in literary analysis.In Angela Carter’s work,the image of wolves is particularly prominent.Her“Werewolf Tetralogy”rewrites traditional culture and subverts trad... Imagery analysis is a commonly used analytical method in literary analysis.In Angela Carter’s work,the image of wolves is particularly prominent.Her“Werewolf Tetralogy”rewrites traditional culture and subverts traditional consciousness,and is the research object of many scholars.Starting from the analysis of the wolf image in The Company of Wolves,this paper uses Deleuze’s Becoming-Animal Theory to explore the construction of harmony between nature,humans and gender relations in The Company of Wolves. 展开更多
关键词 The Company of Wolves wolf imagery Becoming-Animal
下载PDF
Optimizing Grey Wolf Optimization: A Novel Agents’ Positions Updating Technique for Enhanced Efficiency and Performance
9
作者 Mahmoud Khatab Mohamed El-Gamel +2 位作者 Ahmed I. Saleh Asmaa H. Rabie Atallah El-Shenawy 《Open Journal of Optimization》 2024年第1期21-30,共10页
Grey Wolf Optimization (GWO) is a nature-inspired metaheuristic algorithm that has gained popularity for solving optimization problems. In GWO, the success of the algorithm heavily relies on the efficient updating of ... Grey Wolf Optimization (GWO) is a nature-inspired metaheuristic algorithm that has gained popularity for solving optimization problems. In GWO, the success of the algorithm heavily relies on the efficient updating of the agents’ positions relative to the leader wolves. In this paper, we provide a brief overview of the Grey Wolf Optimization technique and its significance in solving complex optimization problems. Building upon the foundation of GWO, we introduce a novel technique for updating agents’ positions, which aims to enhance the algorithm’s effectiveness and efficiency. To evaluate the performance of our proposed approach, we conduct comprehensive experiments and compare the results with the original Grey Wolf Optimization technique. Our comparative analysis demonstrates that the proposed technique achieves superior optimization outcomes. These findings underscore the potential of our approach in addressing optimization challenges effectively and efficiently, making it a valuable contribution to the field of optimization algorithms. 展开更多
关键词 Grey wolf Optimization (GWO) Metaheuristic Algorithm Optimization Problems Agents’ Positions Leader Wolves Optimal Fitness Values Optimization Challenges
下载PDF
标准Wolfe线搜索下修正的HS共轭梯度法 被引量:1
10
作者 蔡宇 周光辉 《淮北师范大学学报(自然科学版)》 CAS 2023年第1期27-31,共5页
为求解非线性无约束优化问题,本文在HS共轭梯度法的基础上,得到一个修正的共轭梯度法。不依赖于强Wolfe线搜索的选择,仅在标准Wolfe线搜索下,证明该修正的共轭梯度法的搜索方向满足下降性和相应算法的全局收敛性。最后的数值实验结果表... 为求解非线性无约束优化问题,本文在HS共轭梯度法的基础上,得到一个修正的共轭梯度法。不依赖于强Wolfe线搜索的选择,仅在标准Wolfe线搜索下,证明该修正的共轭梯度法的搜索方向满足下降性和相应算法的全局收敛性。最后的数值实验结果表明该方法是有效的。 展开更多
关键词 无约束优化 共轭梯度法 标准wolfe线搜索 全局收敛
下载PDF
Hybrid Dipper Throated and Grey Wolf Optimization for Feature Selection Applied to Life Benchmark Datasets 被引量:2
11
作者 Doaa Sami Khafaga El-Sayed M.El-kenawy +4 位作者 Faten Khalid Karim Mostafa Abotaleb Abdelhameed Ibrahim Abdelaziz A.Abdelhamid D.L.Elsheweikh 《Computers, Materials & Continua》 SCIE EI 2023年第2期4531-4545,共15页
Selecting the most relevant subset of features from a dataset is a vital step in data mining and machine learning.Each feature in a dataset has 2n possible subsets,making it challenging to select the optimum collectio... Selecting the most relevant subset of features from a dataset is a vital step in data mining and machine learning.Each feature in a dataset has 2n possible subsets,making it challenging to select the optimum collection of features using typical methods.As a result,a new metaheuristicsbased feature selection method based on the dipper-throated and grey-wolf optimization(DTO-GW)algorithms has been developed in this research.Instability can result when the selection of features is subject to metaheuristics,which can lead to a wide range of results.Thus,we adopted hybrid optimization in our method of optimizing,which allowed us to better balance exploration and harvesting chores more equitably.We propose utilizing the binary DTO-GW search approach we previously devised for selecting the optimal subset of attributes.In the proposed method,the number of features selected is minimized,while classification accuracy is increased.To test the proposed method’s performance against eleven other state-of-theart approaches,eight datasets from the UCI repository were used,such as binary grey wolf search(bGWO),binary hybrid grey wolf,and particle swarm optimization(bGWO-PSO),bPSO,binary stochastic fractal search(bSFS),binary whale optimization algorithm(bWOA),binary modified grey wolf optimization(bMGWO),binary multiverse optimization(bMVO),binary bowerbird optimization(bSBO),binary hysteresis optimization(bHy),and binary hysteresis optimization(bHWO).The suggested method is superior 4532 CMC,2023,vol.74,no.2 and successful in handling the problem of feature selection,according to the results of the experiments. 展开更多
关键词 Metaheuristics dipper throated optimization grey wolf optimization binary optimizer feature selection
下载PDF
Grey Wolf-Based Method for an Implicit Authentication of Smartphone Users
12
作者 Abdulwahab Ali Almazroi Mohamed Meselhy Eltoukhy 《Computers, Materials & Continua》 SCIE EI 2023年第5期3729-3741,共13页
Smartphones have now become an integral part of our everyday lives.User authentication on smartphones is often accomplished by mechanisms(like face unlock,pattern,or pin password)that authenticate the user’s identity... Smartphones have now become an integral part of our everyday lives.User authentication on smartphones is often accomplished by mechanisms(like face unlock,pattern,or pin password)that authenticate the user’s identity.These technologies are simple,inexpensive,and fast for repeated logins.However,these technologies are still subject to assaults like smudge assaults and shoulder surfing.Users’touch behavior while using their cell phones might be used to authenticate them,which would solve the problem.The performance of the authentication process may be influenced by the attributes chosen(from these behaviors).The purpose of this study is to present an effective authentication technique that implicitly offers a better authentication method for smartphone usage while avoiding the cost of a particular device and considering the constrained capabilities of smartphones.We began by concentrating on feature selection methods utilizing the grey wolf optimization strategy.The random forest classifier is used to evaluate these tactics.The testing findings demonstrated that the grey wolf-based methodology works as a better optimum feature selection for building an implicit authentication mechanism for the smartphone environment when using a public dataset.It achieved a 97.89%accuracy rate while utilizing just 16 of the 53 characteristics like utilizing minimum mobile resources mainly;processing power of the device and memory to validate individuals.Simultaneously,the findings revealed that our approach has a lower equal error rate(EER)of 0.5104,a false acceptance rate(FAR)of 1.00,and a false rejection rate(FRR)of 0.0209 compared to the methods discussed in the literature.These promising results will be used to create a mobile application that enables implicit validation of authorized users yet avoids current identification concerns and requires fewer mobile resources. 展开更多
关键词 Smartphone authentication implicit authentication grey wolf random forest feature selection
下载PDF
Hybrid Grey Wolf and Dipper Throated Optimization in Network Intrusion Detection Systems
13
作者 Reem Alkanhel Doaa Sami Khafaga +5 位作者 El-Sayed M.El-kenawy Abdelaziz A.Abdelhamid Abdelhameed Ibrahim Rashid Amin Mostafa Abotaleb B.M.El-den 《Computers, Materials & Continua》 SCIE EI 2023年第2期2695-2709,共15页
The Internet of Things(IoT)is a modern approach that enables connection with a wide variety of devices remotely.Due to the resource constraints and open nature of IoT nodes,the routing protocol for low power and lossy... The Internet of Things(IoT)is a modern approach that enables connection with a wide variety of devices remotely.Due to the resource constraints and open nature of IoT nodes,the routing protocol for low power and lossy(RPL)networks may be vulnerable to several routing attacks.That’s why a network intrusion detection system(NIDS)is needed to guard against routing assaults on RPL-based IoT networks.The imbalance between the false and valid attacks in the training set degrades the performance of machine learning employed to detect network attacks.Therefore,we propose in this paper a novel approach to balance the dataset classes based on metaheuristic optimization applied to locality-sensitive hashing and synthetic minority oversampling technique(LSH-SMOTE).The proposed optimization approach is based on a new hybrid between the grey wolf and dipper throated optimization algorithms.To prove the effectiveness of the proposed approach,a set of experiments were conducted to evaluate the performance of NIDS for three cases,namely,detection without dataset balancing,detection with SMOTE balancing,and detection with the proposed optimized LSHSOMTE balancing.Experimental results showed that the proposed approach outperforms the other approaches and could boost the detection accuracy.In addition,a statistical analysis is performed to study the significance and stability of the proposed approach.The conducted experiments include seven different types of attack cases in the RPL-NIDS17 dataset.Based on the 2696 CMC,2023,vol.74,no.2 proposed approach,the achieved accuracy is(98.1%),sensitivity is(97.8%),and specificity is(98.8%). 展开更多
关键词 Metaheuristics grey wolf optimization dipper throated optimization dataset balancing locality sensitive hashing SMOTE
下载PDF
强Wolfe线搜索下一个新的优化算法
14
作者 朱铁锋 《数学杂志》 2023年第3期267-276,共10页
本文主要研究了一个新的优化算法.首先,利用给出的新的公式和强Wolfe线搜索,证明了该算法在不要求搜索方向满足共轭性条件下具有充分下降性和全局收敛性;其次,利用目标函数为一致凸函数的假设,证明了该算法具有线性收敛速率;最后,利用... 本文主要研究了一个新的优化算法.首先,利用给出的新的公式和强Wolfe线搜索,证明了该算法在不要求搜索方向满足共轭性条件下具有充分下降性和全局收敛性;其次,利用目标函数为一致凸函数的假设,证明了该算法具有线性收敛速率;最后,利用数值试验,验证了新算法是有效的、可行的. 展开更多
关键词 无约束优化 共轭梯度法 wolfe线搜索 全局收敛性
下载PDF
VGWO: Variant Grey Wolf Optimizer with High Accuracy and Low Time Complexity
15
作者 Junqiang Jiang Zhifang Sun +3 位作者 Xiong Jiang Shengjie Jin Yinli Jiang Bo Fan 《Computers, Materials & Continua》 SCIE EI 2023年第11期1617-1644,共28页
The grey wolf optimizer(GWO)is a swarm-based intelligence optimization algorithm by simulating the steps of searching,encircling,and attacking prey in the process of wolf hunting.Along with its advantages of simple pr... The grey wolf optimizer(GWO)is a swarm-based intelligence optimization algorithm by simulating the steps of searching,encircling,and attacking prey in the process of wolf hunting.Along with its advantages of simple principle and few parameters setting,GWO bears drawbacks such as low solution accuracy and slow convergence speed.A few recent advanced GWOs are proposed to try to overcome these disadvantages.However,they are either difficult to apply to large-scale problems due to high time complexity or easily lead to early convergence.To solve the abovementioned issues,a high-accuracy variable grey wolf optimizer(VGWO)with low time complexity is proposed in this study.VGWO first uses the symmetrical wolf strategy to generate an initial population of individuals to lay the foundation for the global seek of the algorithm,and then inspired by the simulated annealing algorithm and the differential evolution algorithm,a mutation operation for generating a new mutant individual is performed on three wolves which are randomly selected in the current wolf individuals while after each iteration.A vectorized Manhattan distance calculation method is specifically designed to evaluate the probability of selecting the mutant individual based on its status in the current wolf population for the purpose of dynamically balancing global search and fast convergence capability of VGWO.A series of experiments are conducted on 19 benchmark functions from CEC2014 and CEC2020 and three real-world engineering cases.For 19 benchmark functions,VGWO’s optimization results place first in 80%of comparisons to the state-of-art GWOs and the CEC2020 competition winner.A further evaluation based on the Friedman test,VGWO also outperforms all other algorithms statistically in terms of robustness with a better average ranking value. 展开更多
关键词 Intelligence optimization algorithm grey wolf optimizer(GWO) manhattan distance symmetric coordinates
下载PDF
Enhanced Multi-Objective Grey Wolf Optimizer with Lévy Flight and Mutation Operators for Feature Selection
16
作者 Qasem Al-Tashi Tareq M Shami +9 位作者 Said Jadid Abdulkadir Emelia Akashah Patah Akhir Ayed Alwadain Hitham Alhussain Alawi Alqushaibi Helmi MD Rais Amgad Muneer Maliazurina B.Saad Jia Wu Seyedali Mirjalili 《Computer Systems Science & Engineering》 SCIE EI 2023年第11期1937-1966,共30页
The process of selecting features or reducing dimensionality can be viewed as a multi-objective minimization problem in which both the number of features and error rate must be minimized.While it is a multi-objective ... The process of selecting features or reducing dimensionality can be viewed as a multi-objective minimization problem in which both the number of features and error rate must be minimized.While it is a multi-objective problem,current methods tend to treat feature selection as a single-objective optimization task.This paper presents enhanced multi-objective grey wolf optimizer with Lévy flight and mutation phase(LMuMOGWO)for tackling feature selection problems.The proposed approach integrates two effective operators into the existing Multi-objective Grey Wolf optimizer(MOGWO):a Lévy flight and a mutation operator.The Lévy flight,a type of random walk with jump size determined by the Lévy distribution,enhances the global search capability of MOGWO,with the objective of maximizing classification accuracy while minimizing the number of selected features.The mutation operator is integrated to add more informative features that can assist in enhancing classification accuracy.As feature selection is a binary problem,the continuous search space is converted into a binary space using the sigmoid function.To evaluate the classification performance of the selected feature subset,the proposed approach employs a wrapper-based Artificial Neural Network(ANN).The effectiveness of the LMuMOGWO is validated on 12 conventional UCI benchmark datasets and compared with two existing variants of MOGWO,BMOGWO-S(based sigmoid),BMOGWO-V(based tanh)as well as Non-dominated Sorting Genetic Algorithm II(NSGA-II)and Multi-objective Particle Swarm Optimization(BMOPSO).The results demonstrate that the proposed LMuMOGWO approach is capable of successfully evolving and improving a set of randomly generated solutions for a given optimization problem.Moreover,the proposed approach outperforms existing approaches in most cases in terms of classification error rate,feature reduction,and computational cost. 展开更多
关键词 Feature selection multi-objective optimization grey wolf optimizer Lévy flight MUTATION classification
下载PDF
Grey Wolf Optimizer Based Deep Learning for Pancreatic Nodule Detection
17
作者 T.Thanya S.Wilfred Franklin 《Intelligent Automation & Soft Computing》 SCIE 2023年第4期97-112,共16页
At an early point,the diagnosis of pancreatic cancer is mediocre,since the radiologist is skill deficient.Serious threats have been posed due to the above reasons,hence became mandatory for the need of skilled technici... At an early point,the diagnosis of pancreatic cancer is mediocre,since the radiologist is skill deficient.Serious threats have been posed due to the above reasons,hence became mandatory for the need of skilled technicians.However,it also became a time-consuming process.Hence the need for automated diagnosis became mandatory.In order to identify the tumor accurately,this research pro-poses a novel Convolution Neural Network(CNN)based superior image classi-fication technique.The proposed deep learning classification strategy has a precision of 97.7%,allowing for more effective usage of the automatically exe-cuted feature extraction technique to diagnose cancer cells.Comparative analysis with CNN-Grey Wolf Optimization(GWO)is carried based on varied testing and training outcomes.The suggested study is carried out at a rate of 90%–10%,80%–20%,and 70%–30%,indicating the robustness of the proposed research work.Outcomes show that the suggested method is effective.GWO-CNN is reli-able and accurate relative to other detection methods available in the literatures. 展开更多
关键词 Convolution neural network deep learning technique feature extraction grey wolf optimizer
下载PDF
Recognizing Ancient South Indian Language Using Opposition Based Grey Wolf Optimization
18
作者 A.Naresh Kumar G.Geetha 《Intelligent Automation & Soft Computing》 SCIE 2023年第3期2619-2637,共19页
Recognizing signs and fonts of prehistoric language is a fairly difficult job that requires special tools.This stipulation make the dispensation period over-riding,difficult and tiresome to calculate.This paper present ... Recognizing signs and fonts of prehistoric language is a fairly difficult job that requires special tools.This stipulation make the dispensation period over-riding,difficult and tiresome to calculate.This paper present a technique for recognizing ancient south Indian languages by applying Artificial Neural Network(ANN)associated with Opposition based Grey Wolf Optimization Algorithm(OGWA).It identifies the prehistoric language,signs and fonts.It is an apparent from the ANN system that arbitrarily produced weights or neurons linking various layers play a significant role in its performance.For adaptively determining these weights,this paper applies various optimization algorithms such as Opposition based Grey Wolf Optimization,Particle Swarm Optimization and Grey Wolf Opti-mization to the ANN system.Performance results are illustrated that the proposed ANN-OGWO technique achieves superior accuracy over the other techniques.In test case 1,the accuracy value of OGWO is 94.89%and in test case 2,the accu-racy value of OGWO is 92.34%,on average,the accuracy of OGWO achieves 5.8%greater accuracy than ANN-GWO,10.1%greater accuracy than ANN-PSO and 22.1%greater accuracy over conventional ANN technique. 展开更多
关键词 Ancient language symbols CHARACTERS artificial neural network opposition based grey wolf optimization
下载PDF
修正Wolfe线搜索下的一类谱共轭梯度法
19
作者 李亚敏 王世磊 《长春工业大学学报》 CAS 2023年第1期85-89,共5页
在已有文献的基础上对共轭参数进行凸组合、修正谱参数,提出一种新的求解大规模无约束优化问题的谱共轭梯度法。该方法使每次迭代都自动产生一个不依赖于任何线搜索的下降方向,并在一定条件下建立了此方法的全局收敛性。
关键词 无约束优化 谱共轭梯度法 下降条件 修正wolfe线搜索 全局收敛
下载PDF
带状疱疹继发大疱性类天疱疮Wolf同位反应1例
20
作者 黄嘉琪 刘红芳 +2 位作者 罗宇榕 唐曼曼 梁云生 《皮肤性病诊疗学杂志》 2023年第2期158-161,共4页
报告1例带状疱疹瘢痕处出现局限性大疱性类天疱疮的Wolf同位反应。患者女,68岁,左侧胸背部瘢痕处水疱2个月。皮肤科检查:左腋下可见一直径约10 cm×5 cm瘢痕,瘢痕中央5 cm×5 cm深在溃疡,轻度渗液,上覆黑褐色痂皮,瘢痕边缘见5... 报告1例带状疱疹瘢痕处出现局限性大疱性类天疱疮的Wolf同位反应。患者女,68岁,左侧胸背部瘢痕处水疱2个月。皮肤科检查:左腋下可见一直径约10 cm×5 cm瘢痕,瘢痕中央5 cm×5 cm深在溃疡,轻度渗液,上覆黑褐色痂皮,瘢痕边缘见5个黄豆至花生米大小水疱,疱液清,疱壁紧张,尼氏征阴性;胸中部近左侧T2~T4区见一直径约3 cm×2 cm增生性瘢痕,瘢痕表面见2个黄豆大小水疱;左背部两处增生性瘢痕,表面见一直径约1.5 cm水疱及一直径约1 cm糜烂面,表面少许脓性分泌物,无黏膜受累。背部皮损组织病理检查:表皮下疱,真皮浅层血管周围少量淋巴组织细胞、嗜中性粒细胞、浆细胞浸润,直接免疫荧光示基膜区C3线状沉积。诊断为带状疱疹继发大疱性类天疱疮同位反应。予口服激素治疗后,水疱在2周内消退,2个月后左腋下溃疡愈合,瘢痕稍平。随访15个月未见复发,目前仍在随访中。 展开更多
关键词 wolf同位反应 大疱性类天疱疮 带状疱疹
下载PDF
上一页 1 2 152 下一页 到第
使用帮助 返回顶部