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LSTM-based Models for Earthquake Prediction 基于lstm的地震预测模型
Asmae Berhich, Fatima-Zahra Belouadha, M. Kabbaj
Over the last few years, many works have been done in earthquake prediction using different techniques and precursors in order to warn of earthquake damages and save human lives. Plenty of works have failed to sufficiently predict earthquakes, because of the complexity and the unpredictable nature of this task. Therefore, in this work we use the powerful deep learning technique. A useful algorithm that captures complex relationships in time series data. The technique is called long short-term memory (LSTM). The work employs this method in two cases of study; the first learns all the datasets in one model, the second case learns the correlations on two divided groups considering their range of magnitude. The results show that learning decomposed datasets gives more well-functioning predictions since it exploits the nature of each type of seismic events.
在过去的几年里,人们利用不同的技术和前兆进行了许多地震预报工作,以预警地震危害,拯救人类生命。由于这项工作的复杂性和不可预测性,许多工作都未能充分预测地震。因此,在这项工作中,我们使用了强大的深度学习技术。捕获时间序列数据中复杂关系的有用算法。这种技术被称为长短期记忆(LSTM)。这项工作在两个研究案例中采用了这种方法;第一种情况是学习一个模型中的所有数据集,第二种情况是学习考虑其幅度范围的两个划分组的相关性。结果表明,学习分解的数据集可以提供更有效的预测,因为它利用了每种地震事件的性质。
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引用次数: 17
Role of Information Technologies in Supply Chain Management 信息技术在供应链管理中的作用
Heddoun Asmae, Benrrezzouq Rhizlane
Logistics Information Technology (LIC) is a key enabler of effective supply chain management activities. In 2015, $300 billion was spent on LIC by businesses worldwide, an increase of 1.8% and 3.8% over 2016 and 2017, respectively. With such large investments, companies run the risk of deteriorating financial performance if the (LIC) does not work as expected. In fact, there is a mix of evidence, some companies benefiting from the (LIC) while others do not benefit from the investment in the LIC. Despite substantial research on the use of information technology in a Supply Chain Management context, the impact of the LIC on business performance is unclear. In particular, the existing literature has reported conflicting results regarding the relationship between the LIC and the company's performance. Therefore, the purpose of our article is to investigate the roles of information technologies in SCM and to highlight this extremely important area of research. We find that the LIC is not universally associated with improving the performance of the company. In particular, LIC has several characteristics, and each characteristic is related to different performance indicators.
物流信息技术(LIC)是有效供应链管理活动的关键推动者。2015年,全球企业在LIC上的支出为3000亿美元,分别比2016年和2017年增长1.8%和3.8%。如此大规模的投资,如果(LIC)不像预期的那样发挥作用,公司就会面临财务业绩恶化的风险。事实上,有多种证据表明,一些公司从(LIC)中受益,而另一些公司则没有从投资LIC中受益。尽管在供应链管理背景下对信息技术的使用进行了大量研究,但LIC对业务绩效的影响尚不清楚。特别是,现有文献报告了关于LIC与公司绩效之间关系的相互矛盾的结果。因此,本文的目的是研究信息技术在供应链管理中的作用,并强调这一极其重要的研究领域。我们发现,LIC并不普遍与公司绩效的改善有关。特别是,LIC具有几个特征,每个特征都与不同的性能指标相关。
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引用次数: 0
Normality Test to Detect the Congestion in MANET by Using OLSR Protocol 使用OLSR协议检测MANET拥塞的正常性测试
A. Nabou, M. Laanaoui, M. Ouzzif, Mohammed-Alamine El Houssaini
Mobile Ad hoc Network (MANET) considers as simple network that use the wireless communication between difference wireless devices named as nodes. MANET has many challenges in its functions due to absence of fixed infrastructure and autoconfiguration. Optimized Link State Routing Protocol (OLSR) is proactive MANET routing protocol dedicated to the large network density. However it can be affected by the congestion that decrease its performance by losing packets, taking more delay to receive packets and also minimize the throughput of the protocol. In this paper, we propose new method reckons on Normality Test that applied in statistic domain to detect the congestion in OLSR protocol without any modification in the algorithm and without any other additional control messages. To detect the congestion in OLSR we use Shapiro_Wilk (W) method to analyze the results of Throughput following two scenarios that leads to the congestion.
移动自组织网络(MANET)是一种简单的网络,在不同的无线设备之间进行无线通信,这些设备被称为节点。由于缺乏固定的基础设施和自动配置,MANET在功能上面临许多挑战。OLSR (Optimized Link State Routing Protocol)是面向大网络密度的主动MANET路由协议。然而,它可能会受到拥塞的影响,它的性能会因为丢失数据包而降低,接收数据包的延迟更长,并且还会使协议的吞吐量最小化。本文提出了一种应用于统计域的基于正态性检验的方法来检测OLSR协议中的拥塞,而不需要对算法进行任何修改,也不需要增加任何控制消息。为了检测OLSR中的拥塞,我们使用Shapiro_Wilk (W)方法来分析导致拥塞的两种情况下的吞吐量结果。
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引用次数: 0
Inferring SQL Queries Using Interactivity 使用交互性推断SQL查询
K. Ahkouk, M. Machkour, J. Antari
Interactivity in language processing plays a pivotal role to allow models to better understand how to build the appropriate output. In the task of Natural Language to SQL, the fact of including the users' interactivity can be one of the practical solutions that haven't been studied deeply in the existing works published in the last decade. Using databases by users with limited familiarity in SQL will create an additional obstacle for these users to better exploit the content stored in the database systems. In this paper we present the already published studies and we discuss the utility of using the interactivity to definitely improve the query generation process in order to construct a model that generalize for unseen and complex sentences and to automatically generate the appropriate outputs.
语言处理中的交互性在使模型更好地理解如何构建适当的输出方面起着关键作用。在从自然语言到SQL的任务中,包含用户交互性的事实可能是过去十年出版的现有作品中没有深入研究的实际解决方案之一。对SQL不太熟悉的用户使用数据库会给这些用户更好地利用数据库系统中存储的内容带来额外的障碍。在本文中,我们介绍了已经发表的研究,并讨论了使用交互性来明确改进查询生成过程的效用,以便构建一个模型,该模型可以泛化未见过的和复杂的句子,并自动生成适当的输出。
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引用次数: 1
Towards analyzing crash events for novice drivers under reduced-visibility settings: A simulator study 在低能见度环境下对新手驾驶员碰撞事件的分析:模拟器研究
Z. E. A. Elassad, H. Mousannif, H. A. Moatassime
Road accidents are one of the primary concerns and critical issues that encounters societies nowadays: Crash events analysis is a key role in improving traffic safety and reducing potential inconveniences to road users. As such, novice drivers continue to be overrepresented in fatalities and injuries arising from crashes, especially in those that occur during nigh times under rainy weather conditions. In this study, we aim to investigate road crash events for novice drivers under reduced-visibility scenarios during multiple night-time driving simulations that have been conducted using a desktop driving simulator. This paper depicted the effect of both light rain and heavy rain on traffic safety by endorsing real-time driver inputs established as throttle pedal position, brake pedal position and wheel angle. To the authors' knowledge, minimal work has been directed to the examination of light and heavy rain on novice drivers crash events based on driver inputs during night times. Artificial Neural Networks (ANN) and Decision Trees (DT) machine learning models have been developed to analyze crash events; results depict that ANN model exhibited the best performances in terms of accuracy and AUC measures during all-weather covariates. Conventionally, and based on the findings, new insights into night-related crash events' assessments for novice drivers could be harnessed to assist enforcement endeavors to design crash avoidance/warning systems under reduced-visibility settings.
道路交通事故是当今社会面临的主要关注和关键问题之一:碰撞事件分析在提高交通安全和减少道路使用者的潜在不便方面发挥着关键作用。因此,在交通事故造成的伤亡中,新手司机的比例仍然过高,特别是在夜间雨天发生的交通事故中。在这项研究中,我们的目的是调查新手驾驶员在夜间驾驶模拟中使用桌面驾驶模拟器进行的低能见度场景下的道路碰撞事件。本文通过认可油门踏板位置、刹车踏板位置和车轮角度等驾驶员实时输入,描述了小雨和大雨对交通安全的影响。据作者所知,根据驾驶员在夜间的输入,对小雨和大雨对新手驾驶员碰撞事件的影响进行了最少的研究。人工神经网络(ANN)和决策树(DT)机器学习模型已被开发用于分析碰撞事件;结果表明,在全天候协变量中,ANN模型在精度和AUC度量方面表现出最好的性能。通常情况下,根据研究结果,可以利用对新手驾驶员夜间相关碰撞事件评估的新见解,协助执法部门在能见度降低的情况下设计碰撞避免/警告系统。
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引用次数: 3
A machine learning color-based segmentation for object detection within dual X-ray baggage images 一种用于双x射线行李图像中物体检测的基于颜色的机器学习分割方法
Mohamed Chouai, M. Merah, J. Sancho-Gómez, M. Mimi
Billions of suitcases and other belongings are checked every year in the X-ray systems of airports around the world. This process is of great importance because it involves the detection of possible dangerous objects such as weapons or explosives. However, the work done by airport surveillance personnel is not free from errors usually due to tiredness or distractions. This is a security problem that can always be reduced with the help of automatic intelligent tools. This paper proposes a machine learning (ML) application for image segmentation. First, it is used a color-based pixel segmentation of images to separate organic, inorganic, mixed and opaque objects from the background. Second, those five types of images are reduced in the so-called fusion phase and classified into only two: organic and inorganic. A comparative study of several ML algorithms with heuristics over a large data set of X-ray images is presented for the classification of organic and inorganic objects for a future dangerous object detection work.
每年,世界各地机场的x光系统都会检查数十亿件行李箱和其他物品。这一过程非常重要,因为它涉及探测可能的危险物体,如武器或爆炸物。然而,机场监视人员所做的工作也不是没有错误的,通常是由于疲劳或分心。这是一个安全问题,总是可以在自动智能工具的帮助下减少。本文提出了一种用于图像分割的机器学习应用。首先,使用基于颜色的图像像素分割,将有机、无机、混合和不透明物体从背景中分离出来。其次,这五种类型的图像在所谓的融合阶段被简化,并分为两种:有机和无机。在x射线图像的大数据集上,对几种具有启发式算法的ML算法进行了比较研究,为未来的危险物体检测工作提供了有机和无机物体的分类。
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引用次数: 3
Post-Fall Time Accounting for Fall Detection Using a Portable Camera 使用便携式相机进行跌落检测后的时间核算
Isma Boudouane, Amina Makhlouf, M. Harkat, N. Saadia, A. Ramdane-Cherif
Falls are one the major problems that threatens the health of the elderly. For this reason, many devices have been developed by researchers all around the globe to continuously monitor and detect critical events, like falls, which allow for a fast-medical intervention to take place. The proposed method for the detection of fall is based on the original version of the Histogram of Oriented Gradient (HOG) combined with Optical Flow and immobilization time to reduce the numbers of false detections. The method was implemented in a system composed of a portable camera and an embedded multi-core computer (Raspberry Pi) to parallelize computations which allows for real time detection. The results of 45 tests conducted on 09 subjects show that falls from standing position can be detected with 80% of sensitivity. The inclusion of immobilization time in the detection process improves the specificity for rotations by 14%.
跌倒是威胁老年人健康的主要问题之一。出于这个原因,世界各地的研究人员开发了许多设备来持续监测和检测关键事件,如跌倒,从而可以进行快速的医疗干预。本文提出的跌倒检测方法是基于原始版本的定向梯度直方图(HOG),结合光流和固定时间来减少误检次数。该方法在一个由便携式相机和嵌入式多核计算机(树莓派)组成的系统中实现,以并行计算,从而实现实时检测。对09名受试者进行的45项测试结果表明,从站立位置跌落的检测灵敏度为80%。在检测过程中纳入固定时间可使旋转特异性提高14%。
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引用次数: 1
Modelling Sustainability, Cloud computing and knowledge transmission in education in developing countries 发展中国家教育中的可持续性、云计算和知识传播建模
A. Mehrez, L. Aladel
This paper focuses on presenting a conceptual model in order to integrate sustainability in cloud computing resulting in facilitating transmission of knowledge in education with a focus on developing countries. From one perspective and while cloud computing has been considered as a recent area of research due to arguments round its value to organizational performance, sustainability has turned to be a typical common norm due to the discovery of uncertainty in various human aspects. From a different perspective, the role of Knowledge Management in enhancing organisational success has been detected in different researches. The main consensus after these researches is that the more effective management of knowledge is the more effective the organizational performance will be. Therefore, this paper presents a theoretical framework of potential links among cloud computing, knowledge management and sustainability.
本文重点介绍了一个概念模型,以便将可持续性纳入云计算,从而促进教育中的知识传播,重点是发展中国家。从一个角度来看,虽然云计算因其对组织绩效的价值而被认为是一个最近的研究领域,但由于发现了人类各个方面的不确定性,可持续性已成为一种典型的共同规范。从不同的角度来看,不同的研究发现了知识管理在提高组织成功方面的作用。这些研究的主要共识是知识管理越有效,组织绩效越有效。因此,本文提出了云计算、知识管理和可持续性之间潜在联系的理论框架。
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引用次数: 0
Proposal of the Solution of Virtual Basic Schools in Rural Areas of African Countries in Conflict: Case of the Central African Republic 非洲冲突国家农村地区虚拟基础学校的解决方案——以中非共和国为例
G. M. Kossingou, Nadege Gladys Ndassimba, Edgard Ndassimba, Kéba Gueye, S. Ouya
The repeated political-military crises from 1996 to the present have disrupted the education system in CAR. The quantitative and qualitative level of primary and secondary schools in CAR is currently very low compared to the periods before the crisis. Several school facilities in rural areas have been destroyed and qualified basic 1 and 2 teachers are abandoning rural areas at risk occupied by rebels. For more than 15 years now, many primary and secondary school children in high-risk areas have not had access to school. As a direct result, the illiteracy rate and child soldiers in the rebellion are rising. This article proposes the use of the Moodle platform that is an open source platform, with many activity modules. These activities allow interaction between teachers and learners at a distance. The implementation of this e-learning platform is a solution for children and young people who have not been to school for a short or long time.It allows: • Catch-up training in primary school for children who have been out of school for a period of less than or equal to 5 years; • Catch-up courses at secondary school for young people who have been out of school for 5 years or less; • Training in agriculture, animal husbandry and fishing will be offered to young people who can no longer resume their studies; • This solution makes it possible to reduce the illiteracy rate among young people and to improve living conditions in the rural areas of countries in conflict.
从1996年到现在,反复出现的政治军事危机扰乱了中非共和国的教育体系。与危机前相比,中非共和国中小学目前的数量和质量水平都很低。农村地区的几所学校设施遭到破坏,合格的基础1和基础2教师正在放弃被叛乱分子占领的危险农村地区。15年多来,高风险地区的许多中小学生没有机会上学。其直接结果是,叛乱中的文盲率和儿童兵正在上升。本文建议使用Moodle平台,它是一个开源平台,具有许多活动模块。这些活动允许教师和学习者之间进行远距离互动。这个电子学习平台的实施是为那些短时间或长时间没有上学的儿童和年轻人提供的一个解决方案。它允许:•为失学时间少于或等于5年的儿童提供小学补习培训;•为离校5年或更短时间的年轻人提供中学补习班;•将向无法继续学业的年轻人提供农业、畜牧业和渔业方面的培训;•这一解决方案可以降低年轻人的文盲率,并改善冲突国家农村地区的生活条件。
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引用次数: 2
Fuzzy Systems for Computational Linguistics and Natural Language 计算语言学和自然语言的模糊系统
D. Bystrov, Olimjon Toirov, Mustafakulova Gulzoda, Yakubova Dilfuza
A natural language (NL) is any of the languages naturally used by humans, i.e. not an artificial such as programming languages. Natural language generation systems convert information from computer databases into normal-sounding human language and natural language understanding systems convert samples of human language into more formal representations that are easier for computer programs to manipulate. Natural language is basically a system for describing perceptions. In this paper we discuss use of fuzzy logic in natural language processing and computation, the general process of NLP as well as some common techniques used, computational linguistic, linguistic approximation.
自然语言(NL)是人类自然使用的任何语言,即不是人工的,如编程语言。自然语言生成系统将计算机数据库中的信息转换为听起来正常的人类语言,自然语言理解系统将人类语言样本转换为更易于计算机程序操作的更正式的表示。自然语言基本上是一个描述感知的系统。本文讨论了模糊逻辑在自然语言处理和计算中的应用,自然语言处理的一般过程以及一些常用的技术,计算语言学,语言近似。
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引用次数: 12
期刊
Proceedings of the 3rd International Conference on Networking, Information Systems & Security
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