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MAC Protocol Analysis for Wireless Sensor Networks 无线传感器网络的MAC协议分析
Pub Date : 2022-01-01 DOI: 10.4018/jitr.298617
Huan Zhang, Feng Wang
In wireless sensor networks, MAC protocol is used to achieve efficient, fair and balanced allocation of wireless channel resources and access control of nodes in the network, and to control the communication process of nodes in the network. The energy consumption of wireless sensor nodes is mainly concentrated in the communication unit, including: data transceiver, idle listening, protocol control overhead, etc. A good MAC protocol is beneficial to reduce unnecessary energy consumption and enhance node life time. At the same time, MAC protocol, as the bottom protocol of wireless sensor network, provides a stable and reliable communication foundation for the realization of the upper protocol. Therefore, a large number of scholars at home and abroad have carried out extensive and in-depth research on MAC layer protocol of network. In this paper, the research process and progress of MAC layer protocol in wireless sensor networks are analyzed, and the research progress of MAC layer protocol in multi-radio frequency and multi-channel wireless sensor networks is analyzed.
在无线传感器网络中,使用MAC协议实现无线信道资源的高效、公平、均衡分配和网络中节点的访问控制,控制网络中节点的通信过程。无线传感器节点的能耗主要集中在通信单元,包括:数据收发、空闲监听、协议控制开销等。一个好的MAC协议有利于减少不必要的能耗,提高节点的寿命。同时,MAC协议作为无线传感器网络的底层协议,为上层协议的实现提供了稳定可靠的通信基础。因此,国内外大量学者对网络的MAC层协议进行了广泛而深入的研究。本文分析了无线传感器网络中MAC层协议的研究过程和进展,分析了MAC层协议在多射频多通道无线传感器网络中的研究进展。
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引用次数: 0
Finding Relevant Documents in a Search Engine Using N-Grams Model and Reinforcement Learning 利用N-Grams模型和强化学习在搜索引擎中查找相关文档
Pub Date : 2022-01-01 DOI: 10.4018/jitr.299930
Amine El Hadi, Youness Madani, R. Ayachi, M. Erritali
The field of information retrieval (IR) is an important area in computer science, this domain helps us to find information that we are interested in from an important volume of information. A search engine is the best example of the application of information retrieval to get the most relevant results. In this paper, we propose a new recommendation approach for recommending relevant documents to a search engine’s users. In this work, we proposed a new approach for calculating the similarity between a user query and a list of documents in a search engine. The proposed method uses a new reinforcement learning algorithm based on n-grams model (i.e., a sub-sequence of n constructed elements from a given sequence) and a similarity measure. Results show that our method outperforms some methods from the literature with a high value of accuracy.
信息检索(information retrieval, IR)是计算机科学中的一个重要领域,它帮助我们从大量的信息中找到我们感兴趣的信息。搜索引擎是应用信息检索来获得最相关结果的最好例子。在本文中,我们提出了一种新的推荐方法,用于向搜索引擎用户推荐相关文档。在这项工作中,我们提出了一种新的方法来计算用户查询和搜索引擎中文档列表之间的相似性。该方法采用了一种新的基于n-grams模型(即从给定序列中构造n个元素的子序列)和相似性度量的强化学习算法。结果表明,该方法优于文献中的一些方法,具有较高的准确率。
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引用次数: 0
A Multi-Budget-Based Approach to Enhance the Responsiveness of Aperiodic Task for a Bandwidth-Preserving Server in Real-Time Systems 基于多预算的实时系统保带宽服务器非周期任务响应性增强方法
Pub Date : 2022-01-01 DOI: 10.4018/jitr.299917
Ajitesh Kumar, S. Gupta
Within the advanced computation time, real-time application pulled in much more attention. Implementing a better high-quality real-time system requires to improve the responsiveness of the tasks set. This research work aims to achieve the best quality of service (QoS) in terms of improving the responsiveness of aperiodic tasks and also improved acceptability domain, by accepting to execute multiple aperiodic functions while maintaining the feasibility of periodic tasks in Real-Time System.The functional analysis with simulation shows that proposed algorithm is highly effective in terms of task sets deemed schedulable and also by allowing aperiodic tasks that were rejected by existing approaches.The simulation results indicate that it reduces overall average response time of aperiodic task approximately 13% at lowest periodic load (35%), 7% at 60% periodic load and 4% at 80% periodic load and in all observed circumstances the proposed novel algorithm received 7%-10% improve over existing one.
在先进的计算时间内,实时应用越来越受到人们的关注。实现更好的高质量实时系统需要提高任务集的响应性。本研究工作旨在通过在实时系统中接受执行多个非周期功能的同时保持周期任务的可行性,从而在提高非周期任务的响应性和改进可接受域方面实现最佳的服务质量(QoS)。仿真功能分析表明,本文提出的算法在任务集可调度和允许非周期任务方面是非常有效的,而非周期任务是现有方法所拒绝的。仿真结果表明,该算法在最低周期负载下(35%)可将非周期任务的总体平均响应时间缩短约13%,在60%周期负载下可缩短7%,在80%周期负载下可缩短4%,在所有观察到的情况下,该算法均比现有算法提高7% ~ 10%。
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引用次数: 0
COVID-19 Pandemic: Insights of Newspaper Trends COVID-19大流行:报纸趋势的见解
Pub Date : 2022-01-01 DOI: 10.4018/jitr.299390
J. Kaur, A. Chhabra, M. Saini, N. Bačanin
Our study aims to analyze the change in coverage of health issues awareness, printed on the front page of Indian E-Papers (The Hindustan Times and The Times of India) for the pre-and- peri coronavirus period. The collected news articles are examined by performing the Latent Dirichlet Allocation algorithm. The sentiment analysis is performed to analyze the change in the emotions aroused from news articles. The outcome regarding the pre-coronavirus period reveals that the focus of the e-papers was mostly on politics, crime, and economy whereas, in the peri-coronavirus period, the e-papers are focusing more (i.e. 40 % topics) on publishing the news related to disseminating the awareness about the Coronavirus disease. The priority of news topics includes the active number of cases, medical facilities, COVID-19 testing. The outcome regarding sentiment analysis reveals that negative sentiments are prominent in the peri-coronavirus period due to fear of the outbreak of the virus.
我们的研究旨在分析印度电子报纸(《印度斯坦时报》和《印度时报》)头版上关于健康问题意识的报道在冠状病毒爆发前和爆发后的变化。通过执行潜狄利克雷分配算法对收集到的新闻文章进行检验。通过情绪分析来分析新闻文章引起的情绪变化。关于冠状病毒前时期的结果显示,电子报纸的重点主要是政治、犯罪和经济,而在冠状病毒期间,电子报纸更多地关注(即40%的主题)发布与传播冠状病毒疾病相关的新闻。新闻主题的优先级包括活跃病例数、医疗设施、COVID-19检测。情绪分析结果显示,由于担心新冠疫情的爆发,在新冠疫情前后,消极情绪非常突出。
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引用次数: 0
Research on the Multi-Objective Optimization for Return Rate and Risk of Financial Resource Allocation 金融资源配置收益率与风险的多目标优化研究
Pub Date : 2022-01-01 DOI: 10.4018/jitr.299950
S. Wan
Aiming at the problems existing in the optimal allocation of financial resources, this paper establishes an optimization model and calculates the optimal allocation coefficient. With the help of Markowitz's investment theory, two indicators, which are investment risk and return rate, are analyzed quantitatively. Firstly, by analyzing the allocation efficiency and risk of financial resources, the allocation efficiency model is established, and the problem is decomposed into a finite 0-1 programming problem, which is solved by Hungarian Method. Secondly, considering the minimum allocation risk and the expected maximum return, the multi-objective model is solved by progressive optimal algorithm. The model reflects both unsatisfaction and risk avoidance which are the two characteristics of rational investment behavior. The analysis shows that the model has strong applicability and can be expected to improve the allocation efficiency of financial resources and reduce the allocation risk.
针对金融资源优化配置中存在的问题,建立了优化模型,并计算了最优配置系数。借助马科维茨的投资理论,对投资风险和回报率两个指标进行了定量分析。首先,通过对金融资源配置效率和风险的分析,建立了金融资源配置效率模型,并将其分解为一个有限的0-1规划问题,采用匈牙利法进行求解。其次,考虑配置风险最小和期望收益最大,采用渐进优化算法求解多目标模型;该模型反映了不满意和风险规避这两个理性投资行为的特征。分析表明,该模型具有较强的适用性,有望提高金融资源的配置效率,降低配置风险。
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引用次数: 0
Alignment Conservativity Under the Ontology Change 本体变化下的对齐保守性
Pub Date : 2022-01-01 DOI: 10.4018/jitr.299923
Yahia Atig, Ahmed Zahaf, D. Bouchiha, M. Malki
Recently, many methods have appeared to solve the problem of the evolution of alignment under the change of ontologies. The main challenge for them is to maintain consistency of alignment after applying the change. An alignment is consistent if and only if the ontologies remain consistent even when used in conjunction with the alignment. The objective of this work is to take a step forward by considering the alignment evolution according to the conservativity principle under the change of ontologies. In this context, an alignment is conservative if the ontological change should not introduce new semantic relationships between concepts from one of the input ontologies. We give methods for the conservativity violation detection and repair under the change of ontologies and we carry out an experiment on a dataset adapted from the Ontology Alignment Evaluation Initiative. The experiment demonstrates both the practical applicability of the proposed approach and shows the limits of the alignment evolution methods compared to the alignment conservativity under the change of ontologies.
近年来,出现了许多解决本体变化下对齐演化问题的方法。他们面临的主要挑战是在应用变更之后保持对齐的一致性。当且仅当本体与对齐结合使用时保持一致时,对齐才是一致的。本工作的目的是通过考虑本体论变化下的保守性原理的对齐演化,向前迈进一步。在这种情况下,如果本体论的更改不应该在其中一个输入本体论的概念之间引入新的语义关系,则对齐是保守的。给出了本体变化下的保守性冲突检测和修复方法,并在本体对齐评价倡议的数据集上进行了实验。实验证明了该方法的实用性,同时也表明了在本体变化情况下,与对准保守性相比,对准进化方法的局限性。
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引用次数: 1
Adaptive Peak Environmental Density Clustering Algorithm in Cloud Computing Technology 云计算技术中的自适应峰值环境密度聚类算法
Pub Date : 2022-01-01 DOI: 10.4018/jitr.298614
Qiangshan Zhang
In order to get sparsity clustering ability of unbalanced cloud data set, combined with adaptive environment density screening, data clustering was carried out, and an improved adaptive environment density peak clustering algorithm under cloud computing technology was proposed. The storage structure model of grid sparse unbalanced cloud data set is constructed, and structure of grid sparse unbalanced cloud data set is reconstructed by combining feature space reconstruction technology. Rough feature quantity of grid sparse unbalanced cloud data set is extracted, and feature extraction and registration are carried out through strict feature registration method. Cloud fusion and peak feature clustering were carried out according to the grid block distribution of the data set. Peak feature quantities of the grid sparse unbalanced cloud data set were extracted, and binary semantic feature distributed detection of the data was carried out.
为了获得不平衡云数据集的稀疏聚类能力,结合自适应环境密度筛选对数据进行聚类,提出了一种改进的云计算技术下的自适应环境密度峰值聚类算法。构建网格稀疏非平衡云数据集存储结构模型,结合特征空间重构技术重构网格稀疏非平衡云数据集结构。提取网格稀疏不平衡云数据集的粗糙特征量,并通过严格的特征配准方法进行特征提取和配准。根据数据集的网格块分布进行云融合和峰值特征聚类。提取网格稀疏不平衡云数据集的峰值特征量,对数据进行二值语义特征分布式检测。
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引用次数: 0
Internet of Things and Its Significance on Smart Homes/Cities 物联网及其对智能家居/城市的意义
Pub Date : 2022-01-01 DOI: 10.4018/jitr.299936
Sam Goundar, Akashdeep Bhardwaj, Deepika Bandhana, Melvin Avineshwar Prasad, Krishaal Kavish Chand
Smart homes and cities is one of the crucial topics for an individual of any age that requires almost zero computer literacy in order to benefit the leisure and luxury offered by smart homes and cities. Benefits offered by smart homes & cities are not only limited to leisure and luxury but other various areas of an individual’s life as well to aid them with information and communication; intelligent responses with the information collected and analyzed; environmental protection and public safety with surveillance. ‘Internet of things’ was invented in 1999 since then there has been a huge bloom in technologies, keeping in mind the present systematic development in sensors, wireless technology, artificial intelligence and machines & devices. This paper outlines the working prototypes that have been developed and deployed in developed countries and recommend to the pacific island nations to accept these technologies for the betterment of their countries. It will also compare the usage of energy and cost saving in smart city and how this can be beneficial to the nations in the Pacific.
智能家居和城市对于任何年龄的人来说都是一个至关重要的话题,为了享受智能家居和城市提供的休闲和奢侈,几乎不需要计算机知识。智能家居和城市提供的好处不仅限于休闲和奢侈品,还包括个人生活的其他各个领域,以及帮助他们获得信息和通信;收集和分析信息的智能响应;环境保护和公共安全与监督。“物联网”发明于1999年,从那时起,技术出现了巨大的发展,记住目前在传感器,无线技术,人工智能和机器设备方面的系统发展。本文概述了已在发达国家开发和部署的工作原型,并建议太平洋岛国为改善其国家而接受这些技术。它还将比较智慧城市的能源使用和成本节约,以及这对太平洋国家的好处。
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引用次数: 1
Use of Artificial Neural Network for Forecasting Health Insurance Entitlements 人工神经网络在健康保险权利预测中的应用
Pub Date : 2022-01-01 DOI: 10.4018/jitr.299372
Sam Goundar, Akashdeep Bhardwaj, S. Prakash, Pranil Sadal
A number of numerical practices exist that actuaries use to predict annual medical claims expense in an insurance company. This amount needs to be included in the yearly financial budgets. Inappropriate estimating generally has negative effects on the overall performance of the business. This paper presents the development of Artificial Neural Network model that is appropriate for predicting the anticipated annual medical claims. Once the implementation of the neural network models were finished, the focus was to decrease the Mean Absolute Percentage Error by adjusting the parameters such as epoch, learning rate and neuron in different layers. Both Feed Forward and Recurrent Neural Networks were implemented to forecast the yearly claims amount. In conclusion, the Artificial Neural Network Model that was implemented proved to be an effective tool for forecasting the anticipated annual medical claims. Recurrent neural network outperformed Feed Forward neural network in terms of accuracy and computation power required to carry out the forecasting.
精算师使用一些数字实践来预测保险公司的年度医疗索赔费用。这笔金额需要列入年度财务预算。不恰当的估计通常会对业务的整体绩效产生负面影响。本文提出了一种适用于预测年度医疗理赔预期的人工神经网络模型。在完成神经网络模型的实现后,重点是通过调整不同层的epoch、学习率和神经元等参数来减小Mean Absolute Percentage Error。采用前馈神经网络和递归神经网络预测年理赔金额。总之,所实施的人工神经网络模型证明是预测预期年度医疗索赔的有效工具。递归神经网络在进行预测所需的精度和计算能力方面优于前馈神经网络。
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引用次数: 1
Deep Stacked Autoencoder-Based Automatic Emotion Recognition Using an Efficient Hybrid Local Texture Descriptor 基于深度堆叠自编码器的高效混合局部纹理描述子的自动情感识别
Pub Date : 2022-01-01 DOI: 10.4018/jitr.2022010103
Shanthi Pitchaiyan, N. Savarimuthu
Extracting an effective facial feature representation is the critical task for an automatic expression recognition system. Local Binary Pattern (LBP) is known to be a popular texture feature for facial expression recognition. However, only a few approaches utilize the relationship between local neighborhood pixels itself. This paper presents a Hybrid Local Texture Descriptor (HLTD) which is derived from the logical fusion of Local Neighborhood XNOR Patterns (LNXP) and LBP to investigate the potential of positional pixel relationship in automatic emotion recognition. The LNXP encodes texture information based on two nearest vertical and/or horizontal neighboring pixel of the current pixel whereas LBP encodes the center pixel relationship of the neighboring pixel. After logical feature fusion, the Deep Stacked Autoencoder (DSA) is established on the CK+, MMI and KDEF-dyn dataset and the results show that the proposed HLTD based approach outperforms many of the state of art methods with an average recognition rate of 97.5% for CK+, 94.1% for MMI and 88.5% for KDEF.
提取有效的面部特征表示是自动表情识别系统的关键任务。局部二值模式(LBP)是人脸表情识别中常用的纹理特征。然而,只有少数方法利用了局部邻域像素本身之间的关系。本文提出了一种混合局部纹理描述子(HLTD),该描述子将局部邻域XNOR模式(LNXP)和LBP模式进行逻辑融合,用于研究位置像素关系在自动情感识别中的潜力。LNXP基于当前像素的两个最近的垂直和/或水平相邻像素编码纹理信息,而LBP基于相邻像素的中心像素关系编码纹理信息。在逻辑特征融合后,在CK+、MMI和KDEF-dyn数据集上建立了深度堆叠自编码器(DSA),结果表明,基于HLTD的方法优于许多最先进的方法,CK+的平均识别率为97.5%,MMI为94.1%,KDEF为88.5%。
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引用次数: 0
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J. Inf. Technol. Res.
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