检索结果-内蒙古大学图书馆

Machine Learning Enabled e-Learner Non-Verbal Behavior Detection in IoT Environment

computers, Materials & Continua 2022年第7期72卷 679-693页

作者： Abdelzahir Abdelmaboud Fahd N.Al-Wesabi Mesfer Al Duhayyim Taiseer Abdalla Elfadil Eisa Manar Ahmed Hamza Mohammed Rizwanullah Abu Serwar Zamani Radwa Marzouk Department of Information Systems College of Science and ArtsKing Khalid UniversityMahayil AsirSaudi Arabia Department of Computer Science College of Science&Art at MahayilKing Khalid UniversitySaudi Arabia Faculty of Computer and IT Sana’a UniversitySana’aYemen Department of Natural and Applied Sciences College of Community-AflajPrince Sattam bin Abdulaziz UniversitySaudi Arabia Department of Information Systems College of Science and Arts-Girls SectionKing Khalid UniversityMahayil AsirSaudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversitySaudi Arabia&Department of MathematicsFaculty of ScienceCairo UniversityGiza12613Egypt

Internet of Things(IoT)with e-learning is widely employed to collect data from various smart devices and share it with other ones for efficient e-learning *** the same time,machine learning(ML)and data mining approaches are presented for accomplishing prediction and classification *** this motivation,this study focuses on the design of intelligent machine learning enabled e-learner non-verbal behaviour detection(IML-ELNVBD)in IoT *** proposed IML-ELNVBD technique allows the IoT devices such as audio sensors,cameras,*** are then connected to the cloud server for further *** addition,the modelling and extraction of behaviour take ***,extreme learning machine sparse autoencoder(ELM-SAE)model is employed for the detection and classification of non-verbal ***,the Ant Colony Optimization(ACO)algorithm is utilized to properly tune the weight and bias parameters involved in the ELM-SAE *** order to ensure the improved performance of the IML-ELNVBD model,a comprehensive simulation analysis is carried out and the results highlighted the betterment compared to the recent models.

关键词： Internet of things e-learning machine learning non-verbal behavior extreme learning machine classification parameter tuning

来源：评论

学校读者我要写书评

暂无评论

Physics-informed neural networks for modeling water flows in a river channel

IEEE Transactions on Artificial Intelligence

引用

IEEE Transactions on Artificial Intelligence 2024年第3期5卷 1001-1015页

作者： Nazari, Luis Fernando Camponogara, Eduardo Seman, Laio Oriel Department of Mathematics Federal Institute of Education Science and Technology Catarinense Rio do Sul89160-202 Brazil Department of Automation and Systems Engineering Federal University of Santa Catarina Florianopolis88040-900 Brazil Program in Applied Computer Science Universidade Do Vale Do Itajai Itajai88302-901 Brazil

The impacts incurred by floods regularly affect the planets population, inflicting social and economic problems. Optimal control strategies based on reservoir management may aid in controlling floods and mitigating the resulting damage. To this end, an accurate dynamic representation of water systems is needed. In practice, flood control strategies rely on hydrological forecasting models obtained fromconceptual or data-drivenmethods. Encouraged by recent works, this research proposes a novel surrogate model for water flow in a river channel based on physics-informed neural networks (PINNs). This approach achieved promising results regarding the assimilation of real-data measurements and the parameter identification of differential equations that govern the underlying dynamics. This article investigates PINN performance in a simulated environment built directly from a configuration of the Saint-Venant equations. The objective is to create a suitable model with high prediction accuracy and scientifically consistent behavior for use in real-Time applications. The experiments revealed promising results for hydrological modeling and presented alternatives to solve the main challenges found in conventional methods while assisting in synthesizing real-world representations. Impact Statement-The research seeks to contribute to the hydrological modeling area with a surrogate model based on physicsinformed neural networks (PINNs) to water flow in a watershed. In practice, thesemodels use conceptual or *** models to reach the precision provided by themethodology use large numbers of physical parameters. These parameters can demand deep knowledge about the environment and are possibly hard to identify in a complex basin. On the other hand, while data-driven methods do not require such knowledge about the dynamic system, they depend on a reliable and useful database to guarantee the accuracy of system *** introduce PINNs as a viable solution for

关键词： Floods

来源：评论

学校读者我要写书评

暂无评论

The Fréchet Topp Leone-G Family of Distributions: Properties, Characterizations and Applications

引用

Annals of Data science 2021年第2期8卷 345-366页

作者： Reyad, Hesham Korkmaz, Mustafa Ç. Afify, Ahmed Z. Hamedani, G.G. Othman, Soha Department of Information Systems and Production Management Qassim University Buraydah Saudi Arabia Department of Measurement and Evaluation Artvin Çoruh University Artvin Turkey Department of Statistics Mathematics and Insurance Benha University Benha Egypt Department of Mathematics Statistics and Computer Science Marquette University Milwaukee United States Department of Applied Statistics Cairo University Giza Egypt

A new family of continuous distributions which ensure model flexiblity, is introduced based on the Fréchet distribution and Topp Leone-G family. Two special sub-models of the new family are discussed. We provide some distributional properties of this family in the general setting such as the series expansions of density, moments, generating function, stress strength model, Rényi and Shannon entropies, probability weighted moments and order statistics. Certain characterizations of the proposed family are presented. The maximum likelihood estimates and the observed information matrix are obtained for the model parameters. We assess the performance of the maximum likelihood estimators by means of a graphical simulation study. The potentiality of the new class is shown via two applications to real data sets. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

关键词： Maximum likelihood estimation

来源：评论

学校读者我要写书评

暂无评论

Matrix product states for inference in discrete probabilistic models

The Journal of Machine Learning Research

引用

The Journal of Machine Learning Research 2021年第1期22卷 8396-8443页

作者： Rasmus Bonnevie Mikkel N. Schmidt Cognitive Systems Department of Applied Mathematics and Computer Science Technical University of Denmark Kgs. Lyngby Denmark

When faced with problems involving inference in discrete domains, solutions often involve appeals to conditional independence structure or mean-field approximations. We argue that this is insufficient for a number of interesting Bayesian problems, including mixture assignment posteriors and probabilistic relational models (e.g. the stochastic block model). These posteriors exhibit no conditional independence structure, precluding the use of graphical model methods, yet exhibit dependency between every single element of the posterior, making mean-field methods a poor fit. We propose using an expressive yet tractable approximation inspired by tensor factorization methods, alternately known as the tensor train or the matrix product state, and which can be construed of as a direct extension of the mean-field approximation to higher-order dependencies. We give a comprehensive introduction to the application of matrix product state in probabilistic inference, and illustrate how to efficiently perform marginalization, conditioning, sampling, normalization, some expectations, and approximate variational inference in our proposed model.

关键词： variational inference matrix product states tensor trains discrete models symmetry

来源：评论

学校读者我要写书评

暂无评论

A concurrent reactive Esterel processor based on multi-threading 06

A concurrent reactive Esterel processor based on multi-threa...

引用

2006 ACM Symposium on applied Computing

作者： Li, Xin Von Hanxleden, Reinhard Real-Time and Embedded Systems Group Dept. of Computer Science and Applied Mathematics Christian-Albrechts-Universität zu Kiel Olshausenstr. 40 D-24098 Kiel Germany

ISBN: (纸本)1595931082

Esterel is a concurrent synchronous language for developing reactive systems. As an alternative to the classical software and hardware synthesis paths, the reactive processing approach uses a specialized processor with an instruction set tailored to Esterel. A principal difficulty when compiling onto a reactive processor is the faithful, efficient implementation of concurrency. This paper presents a novel reactive processor architecture based on multi-threading, which allows the arbitrary nesting of preemption and concurrency, and is scalable to very high degrees of concurrency. Copyright 2006 ACM.

关键词： Program processors

来源：评论

学校读者我要写书评

暂无评论

A novel software toolkit for graph edit distance computation

A novel software toolkit for graph edit distance computation

引用

9th IAPR-TC-15 International Workshop on Graph-Based Representations in Pattern Recognition, GbRPR 2013

作者： Riesen, Kaspar Emmenegger, Sandro Bunke, Horst Institute for Information Systems University of Applied Sciences and Arts Northwestern Switzerland Riggenbachstrasse 16 CH-4600 Olten Switzerland Institute of Computer Science and Applied Mathematics University of Bern Neubrückstrasse 10 CH-3012 Bern Switzerland

ISBN: (纸本)9783642382208

Graph edit distance is one of the most flexible mechanisms for error-tolerant graph matching. Its key advantage is that edit distance is applicable to unconstrained attributed graphs and can be tailored to a wide variety of applications by means of specific edit cost functions. The computational complexity of graph edit distance, however, is exponential in the number of nodes, which makes it feasible for small graphs only. In recent years the authors of the present paper introduced several powerful approximations for fast suboptimal graph edit distance computation. The contribution of the present work is a self standing software tool integrating these suboptimal graph matching algorithms. It is about being made publicly available. The idea of this software tool is that the powerful and flexible algorithmic framework for graph edit distance computation can easily be adapted to specific problem domains via a versatile graphical user interface. The aim of the present paper is twofold. First, it reviews the implemented approximation methods and second, it thoroughly describes the features and application of the novel graph matching software. © 2013 Springer-Verlag.

关键词： Graphical user interfaces

来源：评论

学校读者我要写书评

暂无评论

An esterel processor with full preemption support and its worst reaction time analysis

An esterel processor with full preemption support and its wo...

引用

CASES 2005: International Conference on Compilers, Architecture, and Synthesis for Embedded systems

作者： Li, Xin Lukoschus, Jan Boldt, Marian Harder, Michael Von Hanxleden, Reinhard Real-Time and Embedded Systems Group Dept. of Computer Science and Applied Mathematics Christian-Albrechts-Universität zu Kiel Olshausenstr. 40 D-24098 Kiel Germany

ISBN: (纸本)159593149X

The concurrent synchronous language Esterel allows programmers to treat reactive systems in an abstract, concise manner. An Esterel program is typically first translated into other, non-synchronous high-level languages, such as VHDL or C, and then compiled further into hardware or software. Another approach that has been proposed recently is the direct execution of Esterel-like instructions with a customized processor, which promises the flexibility of a software solution with an efficiency close to a hardware implementation. However, the instruction sets and implementations of the processor architectures proposed so far still have some limitations regarding their completeness, efficiency, and adherence to the original Esterel semantics. This paper presents a novel reactive processor architecture, the Kiel Esterel Processor, which addresses these shortcomings. In particular, it provides a complete, semantically accurate implementation of the Esterel preemption primitives, most of which can be expressed directly with a single machine instruction. One advantage of the reactive processors - in addition to their high execution speed compared to traditional software implementations - is that control-flow is preserved while compiling Esterel into machine code, and that the execution platform has a very predictable timing behavior. This paper presents a precise and very efficient Worst Case Reaction Time (WCRT) analysis, which is geared towards the Kiel Esterel Processor, but which could be adapted to other reactive processors as well. Copyright 2005 ACM.

关键词： Program processors

来源：评论

学校读者我要写书评

暂无评论

Locating battery charging stations to facilitate almost shortest paths 14

Locating battery charging stations to facilitate almost shor...

引用

14th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and systems, ATMOS 2014

作者： Arkin, Esther M. Carmi, Paz Katz, Matthew J. Mitchell, Joseph S. B. Segal, Michael Department of Applied Mathematics and Statistics Stony Brook University United States Department of Computer Science Ben-Gurion University Israel Department of Communication Systems Engineering Ben-Gurion University Israel

ISBN: (纸本)9783939897750

We study a facility location problem motivated by requirements pertaining to the distribution of charging stations for electric vehicles: Place a minimum number of battery charging stations at a subset of nodes of a network, so that battery-powered electric vehicles will be able to move between destinations using "t-spanning" routes, of lengths within a factor t > 1 of the length of a shortest path, while having sufficient charging stations along the way. We give constantfactor approximation algorithms for minimizing the number of charging stations, subject to the t-spanning constraint. We study two versions of the problem, one in which the stations are required to support a single ride (to a single destination), and one in which the stations are to support multiple rides through a sequence of destinations, where the destinations are revealed one at a time. © Esther M. Arkin, Paz Carmi, Matthew J. Katz, Joseph S. B. Mitchell, and Michael Segal;licensed under Creative Commons License CC-BY.

关键词： Approximation algorithms

来源：评论

学校读者我要写书评

暂无评论

Modelling, Computation and Optimization in Information systems and Management sciences 1

引用

丛书名： Advances in Intelligent systems and Computing

1000年

作者： Hoai An Le Thi Tao Pham Dinh Ngoc Thanh Nguyen

来源：评论

学校读者我要写书评

暂无评论

Performance of a rack of liquid-cooled servers

Performance of a rack of liquid-cooled servers

引用

2007 Winter Meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers

作者： Cader, Tahir McAllister, Herley Westra, Levi Regimbal, Kevin Marquez, Andres Government Computing Group Isothermal Systems Research Liberty Lake WA Applied Computer Science Department Computational Sciences and Mathematics Division Pacific North-west National Laboratory Richland WA

Electronics densification is continuing at an unrelenting pace at the server, rack, and facility level. With increasing facility density levels, airflow management has become a major challenge and concern. In an effort to deal with the resulting thermal management challenges, manufacturers are increasingly turning to liquid cooling as a practical solution. The majority of manufacturers have turned to liquid-cooled enclosed racks or rear-door heat exchangers, in which chilled water is delivered to the racks. Some manufacturers are now looking to cold plate cooling solutions that take the heat directly off problem components, such as the CPUs, to get it directly out of the facility. This paper describes work done at the Pacific Northwest National Labs (PNNL) under a Department of Energy-funded program titled "Energy Smart Data Center." An 8.2 kW (27,980 Btu/h) rack of HP rx2600 2U servers has been converted from air-cooling to liquid spray cooling (CPUs only). The rack has been integrated into PNNL's main cluster and subjected to a suite of acceptance tests. Under the testing, the spray-cooled CPUs ran an average of 10°C (18°F) cooler than the air-cooled CPUs. Other peripheral devices, such as the memory D1MMs, ran an average of 8°C (14.4°F) cooler, and the power pod board was measured at 15°C(27°F) cooler. Since installation in July 2005, the rack has been undergoing a one-year uptime and reliability investigation. As part of the investigation, the rack has been subjected to monthly robustness testing and ongoing performance evaluation while running applications such as High Performance Linpack, parts of the NASA NPB-2 Benchmark Suite, and NW Chem. The rack has undergone three months' worth of robustness testing with no major events. Including the robustness testing, the rack uptime is at 95.54% over 299 days. While undergoing application testing, no computational performance differences have been observed between the liquid-cooled and standard air-cooled racks. A sm

关键词： Electronic equipment

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：