Selecting the most important features or attributes from a dataset is a crucial part of machine learning and data analysis. This paper explores the effectiveness of feature selection (FS) methods, comparing filter bas...
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This paper introduces a comprehensive survey of a new population-based algorithm so-called gradient-based optimizer (GBO) and analyzes its major features. GBO considers as one of the most effective optimization algori...
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This paper introduces a comprehensive survey of a new population-based algorithm so-called gradient-based optimizer (GBO) and analyzes its major features. GBO considers as one of the most effective optimization algorithm where it was utilized in different problems and domains, successfully. This review introduces set of related works of GBO where distributed into;GBO variants, GBO applications, and evaluate the efficiency of GBO compared with other metaheuristic algorithms. Finally, the conclusions concentrate on the existing work on GBO, showing its disadvantages, and propose future works. The review paper will be helpful for the researchers and practitioners of GBO belonging to a wide range of audiences from the domains of optimization, engineering, medical, data mining and clustering. As well, it is wealthy in research on health, environment and public safety. Also, it will aid those who are interested by providing them with potential future research.
Emerging applications in the Internet of Things (IoT) and edge computing/learning have sparked massive renewed interest in developing distributed versions of existing (centralized) iterative algorithms often used for ...
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Emerging applications in the Internet of Things (IoT) and edge computing/learning have sparked massive renewed interest in developing distributed versions of existing (centralized) iterative algorithms often used for optimization or machine learning purposes. While existing work in the literature exhibits similarities, for the tasks of both algorithm design and theoretical analysis, there is still no unified method or framework for accomplishing these tasks. This article develops such a general framework for distributing the execution of (centralized) iterative algorithms over networks in which the required information or data is partitioned between the nodes in the network. This article furthermore shows that the distributed iterative algorithm, which results from the proposed framework, retains the convergence properties (rate) of the original (centralized) iterative algorithm. In addition, this article applies the proposed general framework to several interesting example applications, obtaining results comparable to the state of the art for each such example, while greatly simplifying and generalizing their convergence analysis. These example applications reveal new results for distributed proximal versions of gradient descent, the heavy ball method, and Newton's method. For example, these results show that the dependence on the condition number for the convergence rate of this distributed heavy ball method is at least as good as that of centralized gradient descent.
In order to reduce cross-infections during epidemics such as COVID-19, it is valuable to design a campus takeout system of intelligent self-pickup cabinets (ISPCs). This research aims to design such a system by optimi...
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In order to reduce cross-infections during epidemics such as COVID-19, it is valuable to design a campus takeout system of intelligent self-pickup cabinets (ISPCs). This research aims to design such a system by optimizing the sites of cabinets, their capacity types, and the location-allocation scheme. In view of maximizing profits of the system, we formulate this design problem as a zero-one integer nonlinear programming model, where the demand of takeout is distance dependent and congestion dependent, rather than a fixed constant. On the basis of model property analysis, the original model is transformed into an integer linear programming problem such that it is solved by off-the-shelf solvers. By case study and sensitivity analyses, it is found that: The proposed method is valuable for providing an optimal strategy for a takeout system of ISPCs by optimizing the sites of the cabinets, the capacity types and the location-allocation strategy;With the optimal strategy derived from the proposed model and algorithm, the developed system is more applicable in the areas of intensively distributed users or the areas closer to canteens in view of creating significant effects of scale economy;For the groups of consumers with different distance-dependent or congestion-dependent sensitivities, it is suggested to implement distinct optimal strategies of building the takeout system even for those in the same service area;The takeout demand grows up with an increasing unit selling price in the developed system, rather than reduction as in an ordinary relation between the demand of products and the price. Thus, the designed self-pickup takeout system seems more applicable to be adopted for the high-quality takeout.
The article addresses the importance of accurate modeling and simulation of the behavior of photovoltaic, modules (PVs) to ensure optimal solar PV system performance. An evaluation of the effectiveness of new optimiza...
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The current conventional tobacco logistics distribution route optimization algorithm mainly optimizes the route by optimizing the vehicle configuration and site selection nodes, which leads to poor optimization result...
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We present a method to transform any optimal stopping time problem with an underlying tree structure into an s-t min-cut problem on the same tree but with modified capacities, the details of which are lacking in exist...
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We present a method to transform any optimal stopping time problem with an underlying tree structure into an s-t min-cut problem on the same tree but with modified capacities, the details of which are lacking in existing optimal stopping time research. We also show that any s-t min/max-cut problem on a tree has an equivalent optimal stopping problem formulation. We provide a dynamic programming algorithm to solve this problem and also perform a sensitivity analysis on it. Our results imply that the s-t max-cut problem on a tree can be solved using an algorithm with runtime that is linear in the tree size.
Due to the exponential rise in the usage of the internet and smart devices, there is a demand for enhanced network efficiency and user satisfaction in a cloud computing environment. Moreover, moving to the cloud syste...
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Due to the exponential rise in the usage of the internet and smart devices, there is a demand for enhanced network efficiency and user satisfaction in a cloud computing environment. Moreover, moving to the cloud systems, it mainly focuses on storage, computation and resources. Due to copious growth, there exist more challenges as well. Among those, resource allocation in cloud computing is the main study, which is essential to determine the QoS and improved performance concerning reliability, confidentiality, trust, security, user satisfaction, profits, etc. This paper plans to prepare a detailed review on trust-based resource allocation in the collaborative cloud. The cloud industry has been assessed in terms of trust-based and other important factors to produce a road plan for resource allocation. Many papers are reviewed here and give a substantial evaluation of cloud resources and their resource allocation models using machine learning and optimization models. First, this survey provides an elaborated study concerning the various cloud resources considering the performance and QoS. Eventually, it extends the research based on trust-based approaches, with the intention of motivating the researchers to focus on trust-based resource allocation on collaborative cloud computing (CCC) atmosphere.
Coronavirus (COVID-19) is an epidemic that is rapidly spreading and causing a severe healthcare crisis resulting in more than 40 million confirmed cases across the globe. There are many intensive studies on AI-based t...
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Coronavirus (COVID-19) is an epidemic that is rapidly spreading and causing a severe healthcare crisis resulting in more than 40 million confirmed cases across the globe. There are many intensive studies on AI-based technique, which is time consuming and troublesome by considering heavyweight models in terms of more training parameters and memory cost, which leads to higher time complexity. To improve diagnosis, this paper is aimed to design and establish a unique lightweight deep learning-based approach to perform multi-class classification (normal, COVID-19, and pneumonia) and binary class classification (normal and COVID-19) on X-ray radiographs of chest. This proposed CNN scheme includes the combination of three CBR blocks (convolutional batch normalization ReLu) with learnable parameters and one global average pooling (GP) layer and fully connected layer. The overall accuracy of the proposed model achieved 98.33% and finally compared with the pre-trained transfer learning model (DenseNet-121, ResNet-101, VGG-19, and XceptionNet) and recent state-of-the-art model. For validation of the proposed model, several parameters are considered such as learning rate, batch size, number of epochs, and different optimizers. Apart from this, several other performance measures like tenfold cross-validation, confusion matrix, evaluation metrics, sarea under the receiver operating characteristics, kappa score and Mathew's correlation, and Grad-CAM heat map have been used to assess the efficacy of the proposed model. The outcome of this proposed model is more robust, and it may be useful for radiologists for faster diagnostics of COVID-19.
Type-3 fuzzy logic has been recently used in many control methods. The type-3 fuzzy controller enhances the handling of uncertainty and improves robustness by integrating fuzzy sets with fuzzy membership functions. Th...
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Type-3 fuzzy logic has been recently used in many control methods. The type-3 fuzzy controller enhances the handling of uncertainty and improves robustness by integrating fuzzy sets with fuzzy membership functions. The latest approaches using type-3 fuzzy logic in the field of control are studied and evaluated. An overview of developments in control methods based on type-3 fuzzy logic is also provided. It is shown that type-3 fuzzy system has many advantages compared to type-1 and type-2 fuzzy. The advantages and challenges of using type-3 fuzzy logic are identified and discussed. The studies are classified according to the type of control approach, as well as by the type of control applications. Finally, the main achievements, open challenges, and future directions and impacts are identified, to provide important guidance for interested researchers.
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