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2021 International Conference on Theoretical and Applicative Aspects of Computer Science (ICTAACS)最新文献

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Task-based Learning Analytics Indicators Selection Using Naive Bayes Classifier And Regression Decision Trees 基于任务的学习分析指标选择使用朴素贝叶斯分类器和回归决策树
Ouissal Sadouni, Abdelhafid Zitouni
The advent of the internet has strongly influenced the way we learn, by introducing e-learning systems as an aid to traditional education, sometimes even as the sole means of learning. An online learner can generate a multitude of learning analytics indicators that can be used to improve these learning systems using artificial intelligence algorithms. Nevertheless, the use of a large number of learning indicators causes overfitting that degrades the performance of machine learning algorithms. Therefore, in this paper, we will focus on the implementation of dynamic optimization of the number of learning indicators, based on the type of the considered task. This optimization will be done through two different machine learning algorithms: Naive Bayes Classifier for the classification tasks and Regression Decision Trees for the regression task. The adaptation of these two algorithms with various scenarios provides convincing results that demonstrate a significant improvement in the predictions made.
互联网的出现极大地影响了我们的学习方式,它引入了电子学习系统,作为传统教育的辅助手段,有时甚至是唯一的学习手段。在线学习者可以生成大量的学习分析指标,这些指标可用于使用人工智能算法改进这些学习系统。然而,使用大量的学习指标会导致过拟合,从而降低机器学习算法的性能。因此,在本文中,我们将重点实现基于所考虑任务类型的学习指标数量的动态优化。这种优化将通过两种不同的机器学习算法来完成:用于分类任务的朴素贝叶斯分类器和用于回归任务的回归决策树。这两种算法对各种场景的适应提供了令人信服的结果,证明了所做预测的显着改进。
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引用次数: 1
A Transformation Approach Combining BPMN and Petri Net to Verify Business Processes Construction in terms of Resource Consumption using Cloud Services 结合BPMN和Petri网的转换方法在云服务资源消耗方面验证业务流程构建
Mohammed Nassim Lacheheub, Aymen Bakhbakh, Ahmed Nabih Benlabiod, R. Maamri, M. Boutarfa, Salheddine Sadouni
In recent years, cloud computing has seen a phenomenal explosion in services use. Moreover, these ones can be used in any area such as service composition, business process construction, creating a complex service…Etc. In our work, we focused on the cloud services use for business process construction. But the problems that arise are firstly, the multitude of similar services for a business process construction and secondly, the divergence in the resource consumption of these services. In this paper we have chosen to use a formal model to describe, verify business process construction by using cloud services and to calculate for each business process activity the resource consumption of all similar services, in order to select the best services (which have a low resource consumption) for the business process construction. In such a way that selection of cloud services is done on the basis of a formal model to prove the correct execution and to achieve formal verification of the business process with a resources representation. In other words, it enables the selection of best similar cloud services based on re-source consumption and this is done through a transformation from a business process model to a formal model.
近年来,云计算在服务使用方面出现了惊人的爆炸式增长。此外,这些工具可以用于任何领域,例如服务组合、业务流程构建、创建复杂服务等。在我们的工作中,我们主要关注用于业务流程构建的云服务。但是出现的问题首先是一个业务流程构造的大量类似服务,其次是这些服务的资源消耗的差异。在本文中,我们选择使用形式化模型来描述和验证使用云服务构建的业务流程,并为每个业务流程活动计算所有类似服务的资源消耗,以便为业务流程构建选择最佳的服务(资源消耗低)。以这样一种方式,云服务的选择是在正式模型的基础上完成的,以证明正确的执行,并实现对具有资源表示的业务流程的正式验证。换句话说,它支持基于资源消耗选择最佳的类似云服务,这是通过从业务流程模型到正式模型的转换来完成的。
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引用次数: 0
A Further Exploration of the Natural Incorporation of Motives in BDI Architectures BDI架构中动机自然结合的进一步探索
Adel Saadi
Belief-Desire-Intention (BDI) is a well known model for designing agents behaving intelligently and in a flexible manner. The concept of goal is an important BDI agent’s component that plays a central role in this flexibility of behavior. Besides, as the concept of motive is another relevant one for the agent’s behavioral flexibility and as the BDI model originally does not include motives, some extensions of the BDI agent, with a new component for expressing the motive, have been proposed. In a recent work, it has been shown that the concept of motive can be specified via the goal concept, so it is not required to add a new component to express a motive. In this paper, we further explore this idea at the architectural level of a BDI agent. In particular, we look at how the added values of incorporating motives in BDI agents, can be obtained via the goal concept.
信念-欲望-意图(Belief-Desire-Intention, BDI)是一个众所周知的设计智能行为和灵活行为的模型。目标概念是BDI代理的一个重要组成部分,在这种行为灵活性中起着核心作用。此外,由于动机是与智能体行为灵活性相关的另一个概念,而BDI模型原本不包括动机,因此提出了对BDI智能体的一些扩展,增加了表达动机的新组件。在最近的一项工作中,已经表明动机的概念可以通过目标概念来指定,因此不需要添加新的成分来表达动机。在本文中,我们在BDI代理的体系结构级别进一步探讨了这一思想。特别地,我们将研究如何通过目标概念获得在BDI代理中加入动机的附加价值。
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引用次数: 1
Automatic labeling of tracked objects based on an indexing mechanism 基于索引机制的跟踪对象自动标记
Imane Allele, Ala-Eddine Benrazek, Zineddine Kouahla, Brahim Farou, Hamid Seridi, M. Kurulay
Real-time object tracking is still a critical challenge in artificial vision research. In such a mission, it is essential to assign a unique identifier or label to each tracked object, regardless of the area, time of appearance, or detector camera, to distinguish it from other objects and to conserve as much information as possible about the tracked objects with the same label. This conservation is a significant issue, especially in largescale video surveillance systems, due to the linear complexity of the sequential search to find the labels of detected objects in data increasing with time, the number of tracked objects, and the number of active cameras in the network. To overcome this problem, we propose a new automatic multi-object labeling solution for efficient real-time tracking based on an indexing mechanism. This mechanism organizes the massive metadata of objects extracted during tracking into a tree-based indexing structure. The main advantage of this structure in a tracking system is its logarithmic search complexity, which implicitly reduces the search response time, and its quality of research results, which ensure coherent labeling of the tracked objects. This paper discusses the effectiveness of the label search algorithms and the tracking quality compared to other recent tracking systems on real-world datasets. Experimental results showed good performance in reducing search time and improving tracking quality.
实时目标跟踪仍然是人工视觉研究中的一个关键挑战。在这种任务中,必须给每一个被跟踪的物体分配一个唯一的标识符或标签,而不论其所在地区、出现时间或探测器摄像机,以便将其与其他物体区分开来,并尽可能多地保存带有相同标签的被跟踪物体的信息。这种守恒是一个重要的问题,特别是在大型视频监控系统中,因为在数据中寻找检测对象标签的顺序搜索的线性复杂性随着时间的推移而增加,跟踪对象的数量和网络中活动摄像机的数量也在增加。为了克服这一问题,我们提出了一种基于索引机制的实时高效多目标自动标注方案。该机制将跟踪期间提取的对象的大量元数据组织到基于树的索引结构中。这种结构在跟踪系统中的主要优点是其对数搜索复杂度,这隐含地减少了搜索响应时间,并且其研究结果的质量,这确保了跟踪对象的连贯标记。本文讨论了标签搜索算法的有效性和跟踪质量,并与其他最新的跟踪系统在现实世界数据集上进行了比较。实验结果表明,该算法有效地缩短了搜索时间,提高了跟踪质量。
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引用次数: 2
Machine Learning Methods In Drug Discovery: A Selective Review 药物发现中的机器学习方法:选择性综述
Ali Abdelkrim, Abdelkrim Bouramoul, Imene Zenbout
Drug development represents the most challenging phase to pharmaceutical industry, as it is extremely expensive and time consumable. But, under increasing demand to produce safe and innovative drugs faster and at a lower cost, the focus has switched to enhance the lead identification and the lead optimization at the early discovery phase by incorporating insilico recent technologies. Among recent technologies, Artificial Intelligence (AI) has been introduced as a powerful solution to the adressed issues, and it results to speed up significantly the development process. Where, machine-learning played a key role in producing fresh drug candidates. In this work, we walk through the fundamentals of machine learning algorithms, review and discuss their application and current issues in drug development.
药物开发是制药行业最具挑战性的阶段,因为它非常昂贵和耗时。但是,在以更快的速度和更低的成本生产安全和创新药物的需求日益增加的情况下,重点已经转向通过结合最新的硅技术来增强先导物的识别和先导物在早期发现阶段的优化。在最近的技术中,人工智能(AI)已被引入作为解决所解决问题的强大解决方案,它的结果显着加快了开发过程。其中,机器学习在产生新的候选药物方面发挥了关键作用。在这项工作中,我们介绍了机器学习算法的基本原理,回顾和讨论了它们在药物开发中的应用和当前问题。
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引用次数: 0
Towards a Trust-based Model for Access Control for Graph-Oriented Databases 面向图数据库基于信任的访问控制模型研究
Samira Telghamti, Lakhdhar Derdouri
Privacy and data security are critical aspects in databases, mainly when the latter are publically accessed such in social networks. Furthermore, for advanced databases, such as NoSQL ones, security models and security meta-data must be integrated to the business specification and data. In the literature, the proposed models for NoSQL databases can be considered as static, in the sense where the privileges for a given user are predefined and remain unchanged during job sessions. In this paper, we propose a novel model for NoSQL database access control that we aim that it will be dynamic. To be able to design such model, we have considered the Trust concept to compute the reputation degree for a given user that plays a given role.
隐私和数据安全是数据库的关键方面,特别是当后者在社交网络中被公开访问时。此外,对于高级数据库,如NoSQL数据库,安全模型和安全元数据必须集成到业务规范和数据中。在文献中,建议的NoSQL数据库模型可以被认为是静态的,也就是说,给定用户的特权是预定义的,并且在作业会话期间保持不变。在本文中,我们提出了一个新的NoSQL数据库访问控制模型,我们的目标是它将是动态的。为了能够设计这样的模型,我们考虑了信任概念来计算扮演给定角色的给定用户的声誉程度。
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引用次数: 1
Collective DDoS Detection by an Entropy-based Method 基于熵的DDoS集体检测方法
Abdenacer Nafir, S. Mazouzi, S. Chikhi
Distributed Denial of Service (DDoS) are known as fearsome and hard to detect and to deal with. We introduce in this paper a collective technique for DDoS detection in wide network areas. Entropy of the distances traveled by the packets is calculated and exchanged between routers in order to locally decide if there is an ongoing DDoS or not. Contrary to most of the similar methods in the literature, that are based on the entropy of source addresses, we have opted for the entropy of the distances traveled by the packets in order to prevent IP spoofing techniques. Collective detection consists in combining decisions within local neighborhoods. Experiments using the platform OMNet++ show the potential of the new technique for efficient collective detection of DDoS attacks.
分布式拒绝服务(DDoS)被认为是可怕的,难以检测和处理。本文介绍了一种用于广域网DDoS检测的集体技术。计算数据包传输距离的熵,并在路由器之间进行交换,以便本地确定是否存在正在进行的DDoS攻击。与文献中大多数基于源地址熵的类似方法相反,我们选择了数据包行进距离的熵,以防止IP欺骗技术。集体检测包括在当地社区内组合决策。使用omnet++平台的实验显示了新技术的潜力,可以有效地集体检测DDoS攻击。
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引用次数: 0
An Approach for Composing Multiple Control Loops Hierarchically 多级控制回路的分层组合方法
Selma Ouareth, Soufiane Boulehouache, S. Mazouzi
To ensure self-adaptation, the Manager Subsystem must include Control Loop (CL). However, create and perform a single CL able to achieve multi-attributes self-adaptation is difficult. So, the system must include many CLs to ensure separation of concerns. The major challenge is that how multiple CL entities can interact with each other to coordinate the system management? On the other hand, how concerns can separate among different CLs? In this paper, we propose HCLs (Hierarchical Control Loops), a pattern for the manager sub-system, with benefits from the leveraging of the hierarchical and dynamic component model, Fractal. The proposed approach allows managing the complexity of self-adaptation by separating concerns using Fractal component model in the form of an hierarchy of MAPE loops. Furthermore, we distinguish three types of adaptations as following: Local Adaptation, Regional Adaptation, and Superior Adaptation in order to achieve multi-level adapting.
为了确保自适应,管理器子系统必须包括控制回路(CL)。然而,创建和执行能够实现多属性自适应的单个CL是困难的。因此,系统必须包含许多CLs以确保关注点分离。主要的挑战是多个CL实体如何相互交互以协调系统管理?另一方面,关注点如何在不同的cll之间分离?在本文中,我们提出了hcl(分层控制循环),这是一种管理子系统的模式,利用了分层和动态组件模型Fractal的优势。提出的方法允许通过使用分形组件模型以MAPE循环的层次形式分离关注点来管理自适应的复杂性。此外,为了实现多层次的适应,我们将适应分为三种类型:局部适应、区域适应和高级适应。
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引用次数: 1
Searchable encryption for multi-cloudIoT simulation 用于多云模拟的可搜索加密
Farida Ali Guechi, R. Maamri
Make search over encrypted data with encrypted query, to find those who correspond to a keyword or keywords; is called searchable encryption. Our proposed searchable encryption approach is: precise, fast, secure and support access control. These advantages come from the index structure proposed in addition to multi-multi-cloud used. The goal of this paper is an implementation and simulation of our approach. Results indicate it’s efficient in multi-cloudIoT.
使用加密查询对加密数据进行搜索,查找与一个或多个关键字对应的数据;称为可搜索加密。我们提出的可搜索加密方法具有精确、快速、安全、支持访问控制等特点。这些优势来自于除了多云使用之外所提出的索引结构。本文的目标是实现和模拟我们的方法。结果表明,该方法在多云环境下是有效的。
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引用次数: 0
On the Forecasting of Body Temperature using IoT and Machine Learning Techniques 利用物联网和机器学习技术预测体温
Khadidja Makhlouf, Zohra Hmidi, L. Kahloul, Saber Benhrazallah, Tarek Ababsa
Artificial Intelligence (AI) knows a high exploitation in medical computing to enhance patient care by accelerating processes and increasing accuracy, thus providing improvements healthcare in general. Temperature is an important health factor that has to be regularly monitored and even early detected in some situations. Thus, this paper aims to invest in the advances in Internet of Things (IoT) and in Machine Learning (ML) techniques to develop a monitoring system that is able to forecast body temperature. The proposed solution consists in: i) designing and implementing a wearable device using a temperature sensor and a micro-controller, to monitor body temperature permanently, then ii) those monitored measurements are collected and stored as a time-series dataset in a cloud storage server accessible by doctors, and iii) finally the time-series dataset is used by machine learning forecasting techniques to get early body temperature values for the next hours.
人工智能(AI)在医疗计算领域具有很高的应用价值,可以通过加速流程和提高准确性来增强患者护理,从而改善医疗保健。温度是一个重要的健康因素,必须定期监测,在某些情况下甚至要及早发现。因此,本文旨在投资于物联网(IoT)和机器学习(ML)技术的进步,以开发能够预测体温的监测系统。提出的解决方案包括:i)设计并实现一个使用温度传感器和微控制器的可穿戴设备,永久监测体温,然后ii)将这些监测的测量数据收集并存储为医生可访问的云存储服务器中的时间序列数据集,iii)最后时间序列数据集被机器学习预测技术使用,以获得未来几个小时的早期体温值。
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引用次数: 1
期刊
2021 International Conference on Theoretical and Applicative Aspects of Computer Science (ICTAACS)
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