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Hybrid Models of Multi-CNN Features with ACO Algorithm for MRI Analysis for Early Detection of Multiple Sclerosis
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作者 Mohammed Alshahrani Mohammed Al-Jabbar +3 位作者 Ebrahim Mohammed Senan Fatima Ali Amer jid Almahri Sultan Ahmed Almalki Eman A.Alshari 《Computer Modeling in Engineering & Sciences》 2025年第6期3639-3675,共37页
Multiple Sclerosis(MS)poses significant health risks.Patients may face neurodegeneration,mobility issues,cognitive decline,and a reduced quality of life.Manual diagnosis by neurologists is prone to limitations,making ... Multiple Sclerosis(MS)poses significant health risks.Patients may face neurodegeneration,mobility issues,cognitive decline,and a reduced quality of life.Manual diagnosis by neurologists is prone to limitations,making AI-based classification crucial for early detection.Therefore,automated classification using Artificial Intelligence(AI)techniques has a crucial role in addressing the limitations of manual classification and preventing the development of MS to advanced stages.This study developed hybrid systems integrating XGBoost(eXtreme Gradient Boosting)with multi-CNN(Convolutional Neural Networks)features based on Ant Colony Optimization(ACO)and Maximum Entropy Score-based Selection(MESbS)algorithms for early classification of MRI(Magnetic Resonance Imaging)images in a multi-class and binary-class MS dataset.All hybrid systems started by enhancing MRI images using the fusion processes of a Gaussian filter and Contrast-Limited Adaptive Histogram Equalization(CLAHE).Then,the Gradient Vector Flow(GVF)algorithm was applied to select white matter(regions of interest)within the brain and segment them from the surrounding brain structures.These regions of interest were processed by CNN models(ResNet101,DenseNet201,and MobileNet)to extract deep feature maps,which were then combined into fused feature vectors of multi-CNN model combinations(ResNet101-DenseNet201,DenseNet201-MobileNet,ResNet101-MobileNet,and ResNet101-DenseNet201-MobileNet).The multi-CNN features underwent dimensionality reduction using ACO and MESbS algorithms to remove unimportant features and retain important features.The XGBoost classifier employed the resultant feature vectors for classification.All developed hybrid systems displayed promising outcomes.For multiclass classification,the XGBoost model using ResNet101-DenseNet201-MobileNet features selected by ACO attained 99.4%accuracy,99.45%precision,and 99.75%specificity,surpassing prior studies(93.76%accuracy).It reached 99.6%accuracy,99.65%precision,and 99.55%specificity in binary-class classification.These results demonstrate the effectiveness of multi-CNN fusion with feature selection in improving MS classification accuracy. 展开更多
关键词 ResNet101 DenseNet201 MobileNet XGBoost multi-CNN features mesbS ACO GVF multiple sclerosis
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有限元网格自动生成及图形显示程序
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作者 林国裕 《华侨大学学报(自然科学版)》 CAS 1991年第4期464-469,共6页
本文给出一个通用的二维有限元网格生成及图形显示程序。据此可将四边形超单元在等参变换基础上,划分成3结点三角形,4结点四边形,6结点三角形,6结点等参三角形和8结点等参四边形5种形式的单元组合,可得到单元结点的插值温度、厚度,可处... 本文给出一个通用的二维有限元网格生成及图形显示程序。据此可将四边形超单元在等参变换基础上,划分成3结点三角形,4结点四边形,6结点三角形,6结点等参三角形和8结点等参四边形5种形式的单元组合,可得到单元结点的插值温度、厚度,可处理不同材料组成的结构,结点编码采用优化编码,自动显示生成的网格图形。 展开更多
关键词 有限元 网格划分 图形显示
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马来西亚电力集团向皮革市场扩张
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作者 王永昌 《北京皮革(中外皮革信息版)(中)》 2004年第11期65-65,共1页
据马来西亚的一家电力公司——MESB Bhd集团董事长S·Bakar透露,在2004年6月该集团完成对Miroza公司的收购之后,这家皮革公司将成为当年该集团赢利的主要来源。Miroza在全马来西亚开设了30家高档皮革制品零售专卖店,它所生产的... 据马来西亚的一家电力公司——MESB Bhd集团董事长S·Bakar透露,在2004年6月该集团完成对Miroza公司的收购之后,这家皮革公司将成为当年该集团赢利的主要来源。Miroza在全马来西亚开设了30家高档皮革制品零售专卖店,它所生产的名牌产品还远销到泰国、菲律宾和越南。2003年,Miroza公司的税后利润达到近80万美元。 展开更多
关键词 马来西亚 mesb Bhd集团 皮革市场 发展战略
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