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Advanced Machine Learning and Gene Expression Programming Techniques for Predicting CO_(2)-Induced Alterations in Coal Strength
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作者 Zijian Liu Yong Shi +3 位作者 ChuanqiLi Xiliang Zhang Jian Zhou Manoj Khandelwal 《Computer Modeling in Engineering & Sciences》 2025年第4期153-183,共31页
Given the growing concern over global warming and the critical role of carbon dioxide(CO_(2))in this phenomenon,the study of CO_(2)-induced alterations in coal strength has garnered significant attention due to its im... Given the growing concern over global warming and the critical role of carbon dioxide(CO_(2))in this phenomenon,the study of CO_(2)-induced alterations in coal strength has garnered significant attention due to its implications for carbon sequestration.A large number of experiments have proved that CO_(2) interaction time(T),saturation pressure(P)and other parameters have significant effects on coal strength.However,accurate evaluation of CO_(2)-induced alterations in coal strength is still a difficult problem,so it is particularly important to establish accurate and efficient prediction models.This study explored the application of advancedmachine learning(ML)algorithms and Gene Expression Programming(GEP)techniques to predict CO_(2)-induced alterations in coal strength.Sixmodels were developed,including three metaheuristic-optimized XGBoost models(GWO-XGBoost,SSA-XGBoost,PO-XGBoost)and three GEP models(GEP-1,GEP-2,GEP-3).Comprehensive evaluations using multiple metrics revealed that all models demonstrated high predictive accuracy,with the SSA-XGBoost model achieving the best performance(R2—Coefficient of determination=0.99396,RMSE—Root Mean Square Error=0.62102,MAE—Mean Absolute Error=0.36164,MAPE—Mean Absolute Percentage Error=4.8101%,RPD—Residual Predictive Deviation=13.4741).Model interpretability analyses using SHAP(Shapley Additive exPlanations),ICE(Individual Conditional Expectation),and PDP(Partial Dependence Plot)techniques highlighted the dominant role of fixed carbon content(FC)and significant interactions between FC and CO_(2) saturation pressure(P).Theresults demonstrated that the proposedmodels effectively address the challenges of CO_(2)-induced strength prediction,providing valuable insights for geological storage safety and environmental applications. 展开更多
关键词 CO_(2)-induced coal strength meta-heuristic optimization algorithms XGBoost gene expression programming model interpretability
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The Study of Multi-Expression Classification Algorithm Based on Adaboost and Mutual Independent Feature
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作者 Liying Lang Zuntao Hu 《Journal of Signal and Information Processing》 2011年第4期270-273,共4页
In the paper conventional Adaboost algorithm is improved and local features of face such as eyes and mouth are separated as mutual independent elements for facial feature extraction and classification. The multi-expre... In the paper conventional Adaboost algorithm is improved and local features of face such as eyes and mouth are separated as mutual independent elements for facial feature extraction and classification. The multi-expression classification algorithm which is based on Adaboost and mutual independent feature is proposed. In order to effectively and quickly train threshold values of weak classifiers of features, Sample of training is carried out simple improvement. We obtain a good classification results through experiments. 展开更多
关键词 ADABOOST Multi-expression Classification algorithm Local FEATURE FEATURE Extraction SAMPLE Training
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Multi-objective Optimization Conceptual Design of Product Structure Based on Variable Length Gene Expression 被引量:6
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作者 WEI Xiaopeng ZHAO Tingting +2 位作者 JU Zhenhe ZHANG Shi LI Xiaoxiao 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2011年第1期42-49,共8页
It is a complicated problem for the bottom-to-top adaptive conceptual design of complicated products between structure and function. Reliable theories demand to be found in order to determine whether the structure acc... It is a complicated problem for the bottom-to-top adaptive conceptual design of complicated products between structure and function. Reliable theories demand to be found in order to determine whether the structure accords with the requirement of design. For the requirement generally is dynamic variety as time passes, new requirements will come, and some initial requirements can no longer be used. The number of product requirements, the gene length expressing requirements, the structure of the product, and the correlation matrix are varied with individuation of customer requirements of the product. By researching on the calculation mechanisms of dynamic variety, the approaches of gene expression and variable length gene expression are proposed. According to the diversity of structure selection in conceptual design and mutual relations between structure and function as well as structure and structure, the correlation matrixes between structure and function as well as structure and structure are defined. By the approach of making the sum of the elements of correlation matrix maximum, the mathematical models of multi-object optimization for structure design are provided based on variable requirements. An improved genetic algorithm called segment genetic algorithm is proposed based on optimization preservation simple genetic algorithm. The models of multi-object optimization are calculated by the segment genetic algorithm and hybrid genetic algorithm. An example for the conceptual design of a washing machine is given to show that the proposed method is able to realize the optimization structure design fitting for variable requirements. In addition, the proposed approach can provide good Pareto optimization solutions, and the individuation customer requirements for structures of products are able to be resolved effectively. 展开更多
关键词 gene expression multi-object optimization conceptual design genetic algorithm
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Security Risk Assessment of Cyber Physical Power System Based on Rough Set and Gene Expression Programming 被引量:3
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作者 Song Deng Dong Yue +1 位作者 Xiong Fu Aihua Zhou 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI 2015年第4期431-439,共9页
Risk assessment is essential for the safe and reliable operation of cyber physical power system. Traditional security risk assessment methods do not take integration of cyber system and physical system of power grid i... Risk assessment is essential for the safe and reliable operation of cyber physical power system. Traditional security risk assessment methods do not take integration of cyber system and physical system of power grid into account. In order to solve this problem, security risk assessment algorithm of cyber physical power system based on rough set and gene expression programming is proposed. Firstly, fast attribution reduction based on binary search algorithm is presented. Secondly, security risk assessment function for cyber physical power system is mined based on gene expression programming. Lastly, security risk levels of cyber physical power system are predicted and analyzed by the above function model. Experimental results show that security risk assessment function model based on the proposed algorithm has high efficiency of function mining, accuracy of security risk level prediction and strong practicality. © 2014 Chinese Association of Automation. 展开更多
关键词 algorithms Electric power system security Gene expression GENES Rough set theory
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Facial expression feature extraction method based on improved LBP 被引量:5
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作者 WANG Si-ming LIANG Yun-hua 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2019年第4期342-347,共6页
Local binary pattern(LBP)is an important method for texture feature extraction of facial expression.However,it also has the shortcomings of high dimension,slow feature extraction and noeffective local or global featur... Local binary pattern(LBP)is an important method for texture feature extraction of facial expression.However,it also has the shortcomings of high dimension,slow feature extraction and noeffective local or global features extracted.To solve these problems,a facial expression feature extraction method is proposed based on improved LBP.Firstly,LBP is converted into double local binary pattern(DLBP).Then by combining Taylor expansion(TE)with DLBP,DLBP-TE algorithm is obtained.Finally,the DLBP-TE algorithm combined with extreme learning machine(ELM)is applied in seven kinds of ficial expression images and the corresponding experiments are carried out in Japanese adult female facial expression(JAFFE)database.The results show that the proposed method can significantly improve facial expression recognition rate. 展开更多
关键词 facial expression feature extraction DLBP-TE algorithm computer vision extrem learning machine(ELM)
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Recognizing Expression Variant and Occluded Face Images Based on Nested HMM and Fuzzy Rule Based Approach 被引量:1
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作者 Parvathi Ramalingam Shanthi Dhanushkodi 《Circuits and Systems》 2016年第6期983-994,共12页
The face recognition with expression and occlusion variation becomes the greatest challenge in biometric applications to recognize people. The proposed work concentrates on recognizing occlusion and seven kinds of exp... The face recognition with expression and occlusion variation becomes the greatest challenge in biometric applications to recognize people. The proposed work concentrates on recognizing occlusion and seven kinds of expression variations such as neutral, surprise, happy, sad, fear, disgust and angry. During enrollment process, principle component analysis (PCA) detects facial regions on the input image. The detected facial region is converted into fuzzy domain data to make decision during recognition process. The Haar wavelet transform extracts features from the detected facial regions. The Nested Hidden markov model is employed to train these features and each feature of face image is considered as states in a Markov chain to perform learning among the features. The maximum likelihood for the input image was estimated by using Baum Welch algorithm and these features were kept on database. During recognition process, the expression and occlusion varied face image is taken as the test image and maximum likelihood for test image is found by following same procedure done in enrollment process. The matching score between maximum likelihood of input image and test image is computed and it is utilized by fuzzy rule based method to decide whether the test image belongs to authorized or unauthorized. The proposed work was tested among several expression varied and occluded face images of JAFFE and AR datasets respectively. 展开更多
关键词 Face Recognition Fuzzy Rule Based Method expression and Occlusion Variation Baum Welch algorithm Nested Hidden Markov Model
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A Novel Deep Learning-Based Model for Classification of Wheat Gene Expression
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作者 Amr Ismail WalidHamdy +5 位作者 Aya MAl-Zoghby Wael AAwad Ahmed Ismail Ebada Yunyoung Nam Byeong-Gwon Kang Mohamed Abouhawwash 《Computer Systems Science & Engineering》 2024年第2期273-285,共13页
Deep learning(DL)plays a critical role in processing and converting data into knowledge and decisions.DL technologies have been applied in a variety of applications,including image,video,and genome sequence analysis.I... Deep learning(DL)plays a critical role in processing and converting data into knowledge and decisions.DL technologies have been applied in a variety of applications,including image,video,and genome sequence analysis.In deep learning the most widely utilized architecture is Convolutional Neural Networks(CNN)are taught discriminatory traits in a supervised environment.In comparison to other classic neural networks,CNN makes use of a limited number of artificial neurons,therefore it is ideal for the recognition and processing of wheat gene sequences.Wheat is an essential crop of cereals for people around the world.Wheat Genotypes identification has an impact on the possible development of many countries in the agricultural sector.In quantitative genetics prediction of genetic values is a central issue.Wheat is an allohexaploid(AABBDD)with three distinct genomes.The sizes of the wheat genome are quite large compared to many other kinds and the availability of a diversity of genetic knowledge and normal structure at breeding lines of wheat,Therefore,genome sequence approaches based on techniques of Artificial Intelligence(AI)are necessary.This paper focuses on using the Wheat genome sequence will assist wheat producers in making better use of their genetic resources and managing genetic variation in their breeding program,as well as propose a novel model based on deep learning for offering a fundamental overview of genomic prediction theory and current constraints.In this paper,the hyperparameters of the network are optimized in the CNN to decrease the requirement for manual search and enhance network performance using a new proposed model built on an optimization algorithm and Convolutional Neural Networks(CNN). 展开更多
关键词 Gene expression convolutional neural network optimization algorithm genomic prediction WHEAT
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Hybrid Convolutional Neural Network and Long Short-Term Memory Approach for Facial Expression Recognition
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作者 M.N.Kavitha A.RajivKannan 《Intelligent Automation & Soft Computing》 SCIE 2023年第1期689-704,共16页
Facial Expression Recognition(FER)has been an importantfield of research for several decades.Extraction of emotional characteristics is crucial to FERs,but is complex to process as they have significant intra-class va... Facial Expression Recognition(FER)has been an importantfield of research for several decades.Extraction of emotional characteristics is crucial to FERs,but is complex to process as they have significant intra-class variances.Facial characteristics have not been completely explored in static pictures.Previous studies used Convolution Neural Networks(CNNs)based on transfer learning and hyperparameter optimizations for static facial emotional recognitions.Particle Swarm Optimizations(PSOs)have also been used for tuning hyperparameters.However,these methods achieve about 92 percent in terms of accuracy.The existing algorithms have issues with FER accuracy and precision.Hence,the overall FER performance is degraded significantly.To address this issue,this work proposes a combination of CNNs and Long Short-Term Memories(LSTMs)called the HCNN-LSTMs(Hybrid CNNs and LSTMs)approach for FERs.The work is evaluated on the benchmark dataset,Facial Expression Recog Image Ver(FERC).Viola-Jones(VJ)algorithms recognize faces from preprocessed images followed by HCNN-LSTMs feature extractions and FER classifications.Further,the success rate of Deep Learning Techniques(DLTs)has increased with hyperparameter tunings like epochs,batch sizes,initial learning rates,regularization parameters,shuffling types,and momentum.This proposed work uses Improved Weight based Whale Optimization Algorithms(IWWOAs)to select near-optimal settings for these parameters using bestfitness values.The experi-mentalfindings demonstrated that the proposed HCNN-LSTMs system outper-forms the existing methods. 展开更多
关键词 Facial expression recognition Gaussianfilter hyperparameter optimization improved weight-based whale optimization algorithm deep learning(DL)
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CARE: Cloud Archival Repository Express via Algorithmic Machine Learning
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作者 Sheldon Liang Clara Hall +1 位作者 James Pogge Melanie Van Stry 《Intelligent Information Management》 2022年第4期133-156,共24页
CARE&#8212;Cloud Archive Repository Express has emerged from algorithmic machine learning, and acts like a “fastlane” to bridge between DATA and wiseCIO where DATA stands for digital archiving & trans-analyt... CARE&#8212;Cloud Archive Repository Express has emerged from algorithmic machine learning, and acts like a “fastlane” to bridge between DATA and wiseCIO where DATA stands for digital archiving & trans-analytics, and wiseCIO for web-based intelligent service. CARE incorporates DATA and wiseCIO into a triad for content management and delivery (CMD) to orchestrate Anything as a Service (XaaS) by using mathematical and computational solutions to cloud-based problems. This article presents algorithmic machine learning in CARE for “DNA-like” ingredients with trivial information eliminated through deep learning to support integral content management over DATA and informative delivery on wiseCIO. In particular with algorithmic machine learning, CARE creatively incorporates express tokens for information interchange (eTokin) to promote seamless intercommunications among the CMD triad that enables Anything as a Service and empowers ordinary users to be UNIQ professionals: such as ubiquitous manager on content management and delivery, novel designer on universal interface and user-centric experience, intelligent expert for business intelligence, and quinary liaison with XaaS without explicitly coding required. Furthermore, CMD triad harnesses rapid prototyping for user interface design and propels cohesive assembly from Anything orchestrated as a Service. More importantly, CARE collaboratively as a whole promotes instant publishing over DATA, efficient presentation to end-users via wiseCIO, and diligent intelligence for business, education, and entertainment (iBEE) through highly robotic process automation. 展开更多
关键词 algorithmic Machine Learning express Token for Information Interchange Instant Typing Online Publishing Cloud Archival Repository express
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Identification of key genes underlying clinical features of hepatocellular carcinoma based on weighted gene co‑expression network analysis and bioinformatics analysis
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作者 ZHANG Kan LONG Fu‑li +3 位作者 LI Yuan SHU Fa‑ming YAO Fan WEI Ai‑Ling 《Journal of Hainan Medical University》 2023年第2期49-55,共7页
Objective: To identify module genes that are closely related to clinical features of hepatocellular carcinoma (HCC) by weighted gene co‑expression network analysis, and to provide a reference for early clinical diagno... Objective: To identify module genes that are closely related to clinical features of hepatocellular carcinoma (HCC) by weighted gene co‑expression network analysis, and to provide a reference for early clinical diagnosis and treatment. Methods: GSE84598 chip data were downloaded from the GEO database, and module genes closely related to the clinical features of HCC were extracted by comprehensive weighted gene co‑expression network analysis. Hub genes were identified through protein interaction network analysis by the maximum clique centrality (MCC) algorithm;Finally, the expression of hub genes was validated by TCGA database and the Kaplan Meier plotter online database was used to evaluate the prognostic relationship between hub genes and HCC patients. Results: By comparing the gene expression data between HCC tissue samples and normal liver tissue samples, a total of 6 262 differentially expressed genes were obtained, of which 2 207 were upregulated and 4 055 were downregulated. Weighted gene co‑expression network analysis was applied to identify 120 genes of key modules. By intersecting with the differentially expressed genes, 115 candidate hub genes were obtained. The results of enrichment analysis showed that the candidate hub genes were closely related to cell mitosis, p53 signaling pathway and so on. Further application of the MCC algorithm to the protein interaction network of 115 candidate hub genes identified five hub genes, namely NUF2, RRM2, UBE2C, CDC20 and MAD2L1. Validation of hub genes by TCGA database revealed that all five hub genes were significantly upregulated in HCC tissues compared to normal liver tissues;Moreover, survival analysis revealed that high expression of hub genes was closely associated with poor prognosis in HCC patients. Conclusions: This study identifies five hub genes by combining multiple databases, which may provide directions for the clinical diagnosis and treatment of HCC. 展开更多
关键词 Weighted gene co‑expression network analysis Bioinformatics Hepatocellular carcinoma Maximal clique centrality algorithm
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A Deep Learning-Based Automated Approach of Schizophrenia Detection from Facial Micro-Expressions
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作者 Anum Saher Ghulam Gilanie +3 位作者 Sana Cheema Akkasha Latif Syeda Naila Batool Hafeez Ullah 《Intelligent Automation & Soft Computing》 2024年第6期1053-1071,共19页
Schizophrenia is a severe mental illness responsible for many of the world’s disabilities.It significantly impacts human society;thus,rapid,and efficient identification is required.This research aims to diagnose schi... Schizophrenia is a severe mental illness responsible for many of the world’s disabilities.It significantly impacts human society;thus,rapid,and efficient identification is required.This research aims to diagnose schizophrenia directly from a high-resolution camera,which can capture the subtle micro facial expressions that are difficult to spot with the help of the naked eye.In a clinical study by a team of experts at Bahawal Victoria Hospital(BVH),Bahawalpur,Pakistan,there were 300 people with schizophrenia and 299 healthy subjects.Videos of these participants have been captured and converted into their frames using the OpenFace tool.Additionally,pose,gaze,Action Units(AUs),and land-marked features have been extracted in the Comma Separated Values(CSV)file.Aligned faces have been used to detect schizophrenia by the proposed and the pre-trained Convolutional Neural Network(CNN)models,i.e.,VGG16,Mobile Net,Efficient Net,Google Net,and ResNet50.Moreover,Vision transformer,Swim transformer,big transformer,and vision transformer without attention have also been used to train the models on customized dataset.CSV files have been used to train a model using logistic regression,decision trees,random forest,gradient boosting,and support vector machine classifiers.Moreover,the parameters of the proposed CNN architecture have been optimized using the Particle Swarm Optimization algorithm.The experimental results showed a validation accuracy of 99.6%for the proposed CNN model.The results demonstrated that the reported method is superior to the previous methodologies.The model can be deployed in a real-time environment. 展开更多
关键词 SCHIZOPHRENIA deep learning machine learning facial expressions TRANSFORMERS particle swarm optimization(PSO)algorithm
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Optimizing Cancer Classification and Gene Discovery with an Adaptive Learning Search Algorithm for Microarray Analysis
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作者 Chiwen Qu Heng Yao +1 位作者 Tingjiang Pan Zenghui Lu 《Journal of Bionic Engineering》 2025年第2期901-930,共30页
DNA microarrays, a cornerstone in biomedicine, measure gene expression across thousands to tens of thousands of genes. Identifying the genes vital for accurate cancer classification is a key challenge. Here, we presen... DNA microarrays, a cornerstone in biomedicine, measure gene expression across thousands to tens of thousands of genes. Identifying the genes vital for accurate cancer classification is a key challenge. Here, we present Fs-LSA (F-score based Learning Search Algorithm), a novel gene selection algorithm designed to enhance the precision and efficiency of target gene identification from microarray data for cancer classification. This algorithm is divided into two phases: the first leverages F-score values to prioritize and select feature genes with the most significant differential expression;the second phase introduces our Learning Search Algorithm (LSA), which harnesses swarm intelligence to identify the optimal subset among the remaining genes. Inspired by human social learning, LSA integrates historical data and collective intelligence for a thorough search, with a dynamic control mechanism that balances exploration and refinement, thereby enhancing the gene selection process. We conducted a rigorous validation of Fs-LSA’s performance using eight publicly available cancer microarray expression datasets. Fs-LSA achieved accuracy, precision, sensitivity, and F1-score values of 0.9932, 0.9923, 0.9962, and 0.994, respectively. Comparative analyses with state-of-the-art algorithms revealed Fs-LSA’s superior performance in terms of simplicity and efficiency. Additionally, we validated the algorithm’s efficacy independently using glioblastoma data from GEO and TCGA databases. It was significantly superior to those of the comparison algorithms. Importantly, the driver genes identified by Fs-LSA were instrumental in developing a predictive model as an independent prognostic indicator for glioblastoma, underscoring Fs-LSA’s transformative potential in genomics and personalized medicine. 展开更多
关键词 Gene selection Learning search algorithm Gene expression data CLASSIFICATION
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Feature Selection Optimisation for Cancer Classification Based on Evolutionary Algorithms:An Extensive Review
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作者 Siti Ramadhani Lestari Handayani +4 位作者 Theam Foo Ng Sumayyah Dzulkifly Roziana Ariffin Haldi Budiman Shir Li Wang 《Computer Modeling in Engineering & Sciences》 2025年第6期2711-2765,共55页
In recent years,feature selection(FS)optimization of high-dimensional gene expression data has become one of the most promising approaches for cancer prediction and classification.This work reviews FS and classificati... In recent years,feature selection(FS)optimization of high-dimensional gene expression data has become one of the most promising approaches for cancer prediction and classification.This work reviews FS and classification methods that utilize evolutionary algorithms(EAs)for gene expression profiles in cancer or medical applications based on research motivations,challenges,and recommendations.Relevant studies were retrieved from four major academic databases-IEEE,Scopus,Springer,and ScienceDirect-using the keywords‘cancer classification’,‘optimization’,‘FS’,and‘gene expression profile’.A total of 67 papers were finally selected with key advancements identified as follows:(1)The majority of papers(44.8%)focused on developing algorithms and models for FS and classification.(2)The second category encompassed studies on biomarker identification by EAs,including 20 papers(30%).(3)The third category comprised works that applied FS to cancer data for decision support system purposes,addressing high-dimensional data and the formulation of chromosome length.These studies accounted for 12%of the total number of studies.(4)The remaining three papers(4.5%)were reviews and surveys focusing on models and developments in prediction and classification optimization for cancer classification under current technical conditions.This review highlights the importance of optimizing FS in EAs to manage high-dimensional data effectively.Despite recent advancements,significant limitations remain:the dynamic formulation of chromosome length remains an underexplored area.Thus,further research is needed on dynamic-length chromosome techniques for more sophisticated biomarker gene selection techniques.The findings suggest that further advancements in dynamic chromosome length formulations and adaptive algorithms could enhance cancer classification accuracy and efficiency. 展开更多
关键词 Feature selection(FS) gene expression profile(GEP) cancer classification evolutionary algorithms(EAs) dynamic-length chromosome
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山区城市高铁快运末端无人机协同车辆配送优化
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作者 田志强 王子楷 +3 位作者 宋琦 刘斌 甘海枫 杨向飞 《计算机工程与应用》 北大核心 2026年第3期361-376,共16页
针对山区城市路网结构复杂导致的末端配送难题,创新性地提出一种基于“双级物流中心-站点”架构的高铁快运末端无人机协同车辆协同的配送模式,重点优化高附加值货物的配送效率与成本控制。构建了二级物流中心选址优化模型,运用拉格朗日... 针对山区城市路网结构复杂导致的末端配送难题,创新性地提出一种基于“双级物流中心-站点”架构的高铁快运末端无人机协同车辆协同的配送模式,重点优化高附加值货物的配送效率与成本控制。构建了二级物流中心选址优化模型,运用拉格朗日对偶次梯度算法求解选址方案;同时建立多目标无人机协同车辆配送优化模型,对于小规模节点场景利用Gurobi求解器进行求解并获取Pareto前沿解集,筛选时间、成本最优解,对于大规模节点场景,利用自适应大邻域搜索算法(ALNS)求解。通过设计以重庆北南广场为一级物流中心,周围辐射9个站点的高铁快运末端无人机协同车辆配送物流网络,结果表明,决策出了龙头寺、观音桥、较场口、朝天门4个二级物流中心,找到了车辆、无人机配送的最优路径以及运输时间、成本消耗的最优解,该模式较传统配送方式配送时间缩短约33.5%,成本降低约8.59%,进一步扩大场景节点规模实验表明,构建的模型及算法在100节点的场景下仍能保持稳定的求解性能。为高铁快运“最后一公里”提供了新的快运模式和配送方法,这种将高铁、公路、无人机运输结合的联运模式突破了山区地形对物流效率的限制,显著降低了时间和成本为后续研究高铁快运末端配送模式及方法提供了新的方向。 展开更多
关键词 综合交通运输 高铁快运末端配送 无人机协同车辆 拉格朗日对偶次梯度算法 自适应大邻域搜索算法 Gurobi 多目标优化
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EXPRESS向OWL2本体模型自动转换研究 被引量:4
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作者 袁满 刘峰 《吉林大学学报(信息科学版)》 CAS 2018年第1期69-77,共9页
为解决EXPRESS向本体转换中存在通用性差、缺乏映射规则的形式化和自动转换等问题,在不依赖领域情况下,提出两种语言间映射的形式化规则和自动转换算法。该映射规则和算法实现了基于EXPRESS的石油勘探开发国际标准数据模型(Epicentre)... 为解决EXPRESS向本体转换中存在通用性差、缺乏映射规则的形式化和自动转换等问题,在不依赖领域情况下,提出两种语言间映射的形式化规则和自动转换算法。该映射规则和算法实现了基于EXPRESS的石油勘探开发国际标准数据模型(Epicentre)向本体的自动转化。采用Jena推理验证了所构建的Epicentre本体的准确性、完整性和一致性。结果表明,该映射规则与自动化算法的有效性和普适性。 展开更多
关键词 express语言 本体 映射形式化 自动转换算法 Epicentre模型 Jena推理
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随机需求下高铁快运定价与货流分配协同优化
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作者 严梦荣 徐光明 《交通运输系统工程与信息》 北大核心 2026年第1期194-204,共11页
利用高铁客运非高峰期的运能开展高铁快运已成为铁路快捷货运发展新趋势。然而,高铁快运的定价与货流分配相互耦合,共同影响高铁快运系统的运营效率和经济效益。针对运价与需求的弹性关系以及需求不确定性带来的挑战,本文研究高铁快运... 利用高铁客运非高峰期的运能开展高铁快运已成为铁路快捷货运发展新趋势。然而,高铁快运的定价与货流分配相互耦合,共同影响高铁快运系统的运营效率和经济效益。针对运价与需求的弹性关系以及需求不确定性带来的挑战,本文研究高铁快运定价与货流分配协同优化问题,构建考虑弹性需求、随机需求、运价上下界、列车运能和车站装卸能力等约束的两阶段随机非凸非线性规划模型,以最大化高铁快运系统期望净利润。采用外部分段近似线性化和双线性化等技术,将该模型转化为凸二次约束规划模型,并提出结合原始搜索策略的Benders分解算法进行求解。算例结果表明:与确定性模型相比,所提模型在降低运输成本的同时实现更高利润与收益,且各项指标的标准差更低,鲁棒性更强。与求解器的对比实验表明,所提算法在求解效率和质量上具有优越性能:在中小规模的5组算例中,所提算法与求解器的目标函数值之间的相对差值均在1×10^(-4)以内;在大规模算例中,所提算法在683.6 s内获得结果,而求解器无法在规定时间内完成求解。在郑西高铁线路的应用中,所提方法实现期望净利润1465.35万元,验证了所提方法通过吸引更多快递需求,并合理分配快递到运能有限的列车上,实现需求与运输资源的有效匹配,从而显著提高了系统的运营利润。 展开更多
关键词 铁路运输 快递定价 Benders分解算法 高铁快运 货流分配 随机需求
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基于生产线平衡理论的快递分拨中心分拣作业流程优化研究——以SF的Z分拨中心为例
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作者 任剑 《物流科技》 2026年第4期14-18,共5页
文章选取SF的Z分拨中心作为实际案例,围绕生产线平衡理论系统优化其分拣作业流程,通过实地调研与数据收集,识别分拣作业流程中存在的瓶颈工序与不平衡现象,构建以降低平滑指数、提升生产线平衡率为核心目标的优化模型,并借助遗传算法完... 文章选取SF的Z分拨中心作为实际案例,围绕生产线平衡理论系统优化其分拣作业流程,通过实地调研与数据收集,识别分拣作业流程中存在的瓶颈工序与不平衡现象,构建以降低平滑指数、提升生产线平衡率为核心目标的优化模型,并借助遗传算法完成求解。结果显示,优化后分拣作业平衡率由63.5%提升至85.3%,日均处理能力提高23.5%,平滑指数下降56.4%。该研究结果不仅为快递分拨中心提升作业效率提供了理论支持与实践参考,也对整个物流行业的发展具有借鉴意义。 展开更多
关键词 生产线平衡 快递分拨中心 分拣作业 优化模型 遗传算法
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Sentiment Analysis on Social Media Using Genetic Algorithm with CNN 被引量:1
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作者 Dharmendra Dangi Amit Bhagat Dheeraj Kumar Dixit 《Computers, Materials & Continua》 SCIE EI 2022年第3期5399-5419,共21页
There are various intense forces causing customers to use evaluated data when using social media platforms and microblogging sites.Today,customers throughout the world share their points of view on all kinds of topics... There are various intense forces causing customers to use evaluated data when using social media platforms and microblogging sites.Today,customers throughout the world share their points of view on all kinds of topics through these sources.The massive volume of data created by these customers makes it impossible to analyze such data manually.Therefore,an efficient and intelligent method for evaluating social media data and their divergence needs to be developed.Today,various types of equipment and techniques are available for automatically estimating the classification of sentiments.Sentiment analysis involves determining people’s emotions using facial expressions.Sentiment analysis can be performed for any individual based on specific incidents.The present study describes the analysis of an image dataset using CNNswithPCA intended to detect people’s sentiments(specifically,whether a person is happy or sad).This process is optimized using a genetic algorithm to get better results.Further,a comparative analysis has been conducted between the different models generated by changing the mutation factor,performing batch normalization,and applying feature reduction using PCA.These steps are carried out across five experiments using theKaggledataset.The maximum accuracy obtained is 96.984%,which is associated with the Happy and Sad sentiments. 展开更多
关键词 Sentiment analysis convolutional neural networks facial expression genetic algorithm
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Enhancing Cancer Classification through a Hybrid Bio-Inspired Evolutionary Algorithm for Biomarker Gene Selection 被引量:1
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作者 Hala AlShamlan Halah AlMazrua 《Computers, Materials & Continua》 SCIE EI 2024年第4期675-694,共20页
In this study,our aim is to address the problem of gene selection by proposing a hybrid bio-inspired evolutionary algorithm that combines Grey Wolf Optimization(GWO)with Harris Hawks Optimization(HHO)for feature selec... In this study,our aim is to address the problem of gene selection by proposing a hybrid bio-inspired evolutionary algorithm that combines Grey Wolf Optimization(GWO)with Harris Hawks Optimization(HHO)for feature selection.Themotivation for utilizingGWOandHHOstems fromtheir bio-inspired nature and their demonstrated success in optimization problems.We aimto leverage the strengths of these algorithms to enhance the effectiveness of feature selection in microarray-based cancer classification.We selected leave-one-out cross-validation(LOOCV)to evaluate the performance of both two widely used classifiers,k-nearest neighbors(KNN)and support vector machine(SVM),on high-dimensional cancer microarray data.The proposed method is extensively tested on six publicly available cancer microarray datasets,and a comprehensive comparison with recently published methods is conducted.Our hybrid algorithm demonstrates its effectiveness in improving classification performance,Surpassing alternative approaches in terms of precision.The outcomes confirm the capability of our method to substantially improve both the precision and efficiency of cancer classification,thereby advancing the development ofmore efficient treatment strategies.The proposed hybridmethod offers a promising solution to the gene selection problem in microarray-based cancer classification.It improves the accuracy and efficiency of cancer diagnosis and treatment,and its superior performance compared to other methods highlights its potential applicability in realworld cancer classification tasks.By harnessing the complementary search mechanisms of GWO and HHO,we leverage their bio-inspired behavior to identify informative genes relevant to cancer diagnosis and treatment. 展开更多
关键词 Bio-inspired algorithms BIOINFORMATICS cancer classification evolutionary algorithm feature selection gene expression grey wolf optimizer harris hawks optimization k-nearest neighbor support vector machine
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基于PCI Express总线的R-D算法实时成像系统设计
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作者 李燕 王倩 +1 位作者 王虹现 邢孟道 《现代电子技术》 2008年第7期23-26,共4页
距离-多普勒(R-D)算法是一种常用的SAR成像算法,具有数据量大、存储量大等特点,而传统的实时成像系统由于采用PCI总线使得数据传输速率难以提高,从而限制了成像算法的实现。这里设计了一种新型的雷达成像实时处理系统,该系统利用最新的P... 距离-多普勒(R-D)算法是一种常用的SAR成像算法,具有数据量大、存储量大等特点,而传统的实时成像系统由于采用PCI总线使得数据传输速率难以提高,从而限制了成像算法的实现。这里设计了一种新型的雷达成像实时处理系统,该系统利用最新的PCI Express总线代替PCI总线,采用了MicroTCA架构,具有极强的运算能力和良好的通信能力,同时具备了数据采集与大容量存储的能力,特别适合于复杂的实时成像雷达信号处理。 展开更多
关键词 R—D算法 PCI express MicroTCA 信号处理 DSP 雷达成像
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