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2020 18th International Conference on Emerging eLearning Technologies and Applications (ICETA)最新文献

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Speech Emotion Recognition Overview and Experimental Results 语音情感识别综述及实验结果
Eva Lieskovská, Maroš Jakubec, R. Jarina
Nowadays, speech emotion recognition is a promising area of research mainly for human-computer interaction. Emotions play significant role in educational process. E-learning such as online classes or student-computer interaction setting may require monitoring of emotional state of students, due to the maintaining of quality of provided education. Thus, automatic speech emotion recognition represents a powerful tool for this purpose. The following paper provides an overview of speech emotion recognition and related works. A comparison of various forms of recurrent networks (LSTM, LSTM with peephole connections, GRU) and recognition accuracy on IEMOCAP database is also presented.
当前,语音情感识别是一个很有前途的研究领域,主要针对人机交互。情感在教育过程中起着重要的作用。电子学习,如在线课程或学生与电脑的互动设置可能需要监测学生的情绪状态,因为所提供的教育质量的维持。因此,语音情感自动识别是实现这一目标的有力工具。本文对语音情感识别及其相关工作进行了综述。比较了不同形式的递归网络(LSTM、带窥视孔连接的LSTM、GRU)及其在IEMOCAP数据库上的识别精度。
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引用次数: 3
Parametric audio quality estimation models for broadcasting systems and web-casting applications based on the Genetic Programming 基于遗传规划的广播系统和网络广播应用的参数音频质量估计模型
M. Jakubik, P. Počta
The COVID-19 pandemic has been one of the biggest disruptions to education that the world has ever experienced, affecting the most of the world student population. Many countries turned to online based distance education to ensure that learning never stops. As a consequence, throughout the globe there has been an increasing trend among the students to use different broadcasting systems and web-casting applications for the purpose of online learning. However, the video or audio quality that these various applications offer will be the key factor for their acceptance, i.e. whether or not the students will be willing to use those systems for online learning. Therefore, a machine learning technique, i.e. Genetic Programming, is used in this work for the purpose of assessing audio quality using an objective approach. A design and performance evaluation of the parametric models estimating the audio quality perceived by the end user of broadcasting systems and web-casting applications are presented in this paper. To estimate the quality of audio broadcasting systems and web-casting applications, a set of parameters influencing the quality is used as an input for the developed parametric quality estimation models. The results obtained by the developed parametric audio quality estimation models have validated Genetic Programming as a powerful technique, providing a good accuracy and generalization capabilities. This makes it a possible candidate for the estimation of audio quality perceived by the end user in the context of the broadcasting systems and web-casting applications.
2019冠状病毒病大流行是有史以来对世界教育造成的最大干扰之一,影响了世界上大多数学生。许多国家转向基于网络的远程教育,以确保学习永不停止。因此,在全球范围内,学生使用不同的广播系统和网络广播应用程序进行在线学习的趋势日益增加。然而,这些不同应用程序提供的视频或音频质量将是他们接受的关键因素,即学生是否愿意使用这些系统进行在线学习。因此,在这项工作中使用了机器学习技术,即遗传编程,以使用客观方法评估音频质量。本文介绍了一种参数模型的设计和性能评估方法,用于估计广播系统和网络广播应用的最终用户所感知的音频质量。为了估计音频广播系统和网络广播应用的质量,一组影响质量的参数被用作已开发的参数质量估计模型的输入。所建立的参数化音质估计模型的结果验证了遗传规划是一种强大的技术,具有良好的精度和泛化能力。这使得它成为广播系统和网络广播应用中最终用户感知的音频质量估计的可能候选。
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引用次数: 1
API for Communication between Motion Sensors and Raspberry Pi 用于运动传感器和树莓派之间通信的API
O. Kováč, E. Pietriková
Motion sensors have been used in a number of diverse applications recently. They can be found in aviation, virtual reality, robotics, medicine, advanced scientific research or even on our bodies. With this growing presence of motion sensors in the field of information technology, problems related to working with them seamlessly have appeared. One of major issues stems from technological differences between sensors and requires their users to implement sensorspecific software logic independently for every sensor used. This paper aims at solving the problem described by proposing a solution designed to integrate this logic into an application programming interface for straightforward work with motion sensors.
最近,运动传感器在许多不同的应用中得到了应用。它们可以在航空、虚拟现实、机器人、医学、高级科学研究甚至我们的身体上找到。随着运动传感器在信息技术领域的日益增长,与它们无缝工作相关的问题也出现了。其中一个主要问题源于传感器之间的技术差异,并要求其用户为所使用的每个传感器独立实现特定于传感器的软件逻辑。本文旨在通过提出一种解决方案来解决所描述的问题,该解决方案旨在将该逻辑集成到应用程序编程接口中,以便与运动传感器直接工作。
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引用次数: 1
SMART environment control in virtual and mixed reality based on cognitive user abilities 基于认知用户能力的虚拟和混合现实智能环境控制
M. Sivý, B. Sobota, Š. Korečko, M. Hudák
This paper focuses on the description of the interface design of a backend server and the design implementation of a user interface suitable for the visualization of virtual and real objects/appliances controlled in a SMART environment, for example in the home, with regard to the cognitive abilities of the user. Client applications will be able to use the REST API and communicate through this API using requests, use implemented logic, and store objects and their states in the database. The server is deployed in the cloud to be accessible outside the local network. The solution is universal and offers a generic standard to support different types of appliances using a generic form. Task scheduling is also an important function. In virtual reality, it is possible to quickly test the cognitive abilities of the user and thus adapt the user interface to his needs.
本文重点描述了后端服务器的界面设计,并设计实现了一个适合于在智能环境中(例如在家中)控制的虚拟和真实对象/设备的可视化的用户界面,考虑到用户的认知能力。客户端应用程序将能够使用REST API,并通过该API使用请求进行通信,使用实现的逻辑,并在数据库中存储对象及其状态。服务器部署在云中,可以在本地网络外访问。该解决方案是通用的,并提供了一个通用的标准来支持使用通用表单的不同类型的设备。任务调度也是一个重要的功能。在虚拟现实中,可以快速测试用户的认知能力,从而使用户界面适应他的需求。
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引用次数: 2
E-Health device for remote health monitoring 用于远程健康监测的电子保健设备
J. Lenický, M. Hradsky, M. Kalina, J. Erdelyi, P. Cicák
These days, E- Health became a very interesting domain. We can use this domain to improve health in every job. We can remotely monitor the health of different subjects. In this paper, we presented an E-Health device for remote health monitoring on humans. We created a device, where a human can measure his heat, heartbeat, and blood pressure, and then send this data to the server. This device was developed to monitor student health. With this device, we want to find out the health difference between standard learning processes and E-Learning processes. At the end of the experiment, we want to improve both learning processes.
这些天,电子健康成为一个非常有趣的领域。我们可以利用这个领域来改善每个工作岗位的健康状况。我们可以远程监控不同实验对象的健康状况。在本文中,我们提出了一种用于人体远程健康监测的电子健康设备。我们创造了一种设备,人们可以测量自己的体温、心跳和血压,然后将这些数据发送到服务器。研制这种装置是为了监测学生的健康状况。通过这个设备,我们想找出标准学习过程和电子学习过程之间的健康差异。在实验的最后,我们想要改善这两个学习过程。
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引用次数: 0
Evaluation of Modeling Differences of Nodal vs. Zonal Pricing Based Electricity Markets: Optimization Models and Network Representation 基于节点与区域定价的电力市场建模差异评估:优化模型与网络表示
L. Jansen, L. Buzna
Firstly, this work briefly introduces the Collaborative Doctoral Program (CDP), which fosters collaborations between the Joint Research Centre and Universities, in order to provide a European qualification framework to doctoral students, who are trained to be at the intersect of science and policy through multinational projects. Secondly, this work provides an example of research conducted in the context of the CDP in the field of energy modeling aiming at developing improved modeling tools to assess the efficiency of nodal against zonal pricing and providing evidence for policy-makers. The electricity system is evolving with increasing incorporation of renewable energies, therefore also the transmission system is facing expanding challenges. As a consequence, also electricity markets are evolving. A topic of increasing interest is nodal pricing as an alternative to zonal pricing-based electricity markets in Europe. This work is giving an overview of different formulations of optimization problems in power systems and in particular, in electricity markets, which are commonly applied in literature. We focus on two different aspects being the type of optimization problem and the representation of the transmission network. In this context, the trade-off between modeling accuracy and computational efforts is the topic assessed in this study. We find that computational times increase drastically when employing unit-commitment, but remain rather moderate when sticking to economic dispatch using DC- as well as AC-OPF. The representation of networks in terms of aggregated node systems, which are relevant when aiming to compare zonal to nodal pricing-based electricity markets, show that power flows within zones are difficult to predict and it is vital to further investigate the aggregation of nodes into zones to support comparative studies.
首先,本文简要介绍了合作博士项目(CDP),该项目促进了联合研究中心和大学之间的合作,以便为博士生提供欧洲资格框架,这些博士生通过跨国项目被培训为科学和政策的交叉点。其次,这项工作提供了一个在能源建模领域的CDP背景下进行的研究的例子,旨在开发改进的建模工具来评估节点与区域定价的效率,并为政策制定者提供证据。随着可再生能源的不断加入,电力系统也在不断发展,因此输电系统也面临着越来越大的挑战。因此,电力市场也在不断发展。在欧洲,以区域定价为基础的电力市场的替代方案是节点定价,这一话题日益引起人们的兴趣。这项工作概述了电力系统中优化问题的不同公式,特别是在电力市场中,这些公式通常在文献中应用。我们着重于两个不同的方面,即优化问题的类型和传输网络的表示。在这种情况下,建模精度和计算工作量之间的权衡是本研究评估的主题。我们发现,当采用机组承诺时,计算时间急剧增加,但当坚持使用DC-和AC-OPF的经济调度时,计算时间仍然相当温和。以聚集节点系统为基础的网络表示,当旨在比较区域与基于节点定价的电力市场时,这是相关的,表明区域内的电力流动难以预测,进一步调查节点聚集到区域以支持比较研究至关重要。
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引用次数: 0
Technical Challenges and Vision of Slovak National Telepresence Infrastructure during the COVID-19 Pandemic 2019冠状病毒病大流行期间斯洛伐克国家网真基础设施的技术挑战和愿景
F. Jakab, D. Cymbalák, R. Vápeník, P. Hrčka, J. Kováčová
This paper introduces technical challenges with National Telepresence Infrastructure in Slovakia during COVID-19 Pandemic. Rapidly increasing demand for videoconference technology from academic and research institutions is calling for quick sometimes not yet stable solutions during these days. Paper should be a summary of operational and innovative rapid development activities of large telepresence infrastructure. There will be also a vision for transforming telepresence technology regarding current situation into more effective digital tool not only for communication, but also for remote work, digital traveling etc.
本文介绍了在COVID-19大流行期间斯洛伐克国家网真基础设施的技术挑战。学术和研究机构对视频会议技术的需求迅速增加,这就要求在这些日子里有快速的解决方案,有时还不稳定。论文应该是大型网真基础设施的操作和创新快速发展活动的总结。还有一个愿景是将远程呈现技术转化为更有效的数字工具,不仅用于通信,还用于远程工作,数字旅行等。
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引用次数: 0
Level and Ways of Educating Future Teachers in the Use of Digital Technologies: Basic Results of a Questionnaire Survey 未来教师使用数字技术的水平与途径:一项问卷调查的基本结果
T. Javorcik, T. Havlaskova
The paper describes partial results and findings of an extensive questionnaire survey, which took place among students of teaching disciplines of the Faculty of Education, University of Ostrava. The aim of this questionnaire survey was to find out what knowledge, skills and overview students of various teaching disciplines have in the use of digital technologies in the educational process. We conducted the questionnaire survey at a time of several key changes in education. These changes affect all subjects and levels of education making the use of digital technologies in the Czech school environment inevitable for all those involved - teachers, pupils and students. For this reason, we consider it necessary to map whether future graduates of teaching disciplines are sufficiently prepared for these changes.
本文描述了一项广泛的问卷调查的部分结果和发现,该调查在俄斯特拉发大学教育学院教学学科的学生中进行。本次问卷调查的目的是了解不同教学学科的学生在教育过程中使用数字技术的知识、技能和概况。我们进行问卷调查时正值教育发生几项重大变化之时。这些变化影响到所有学科和教育水平,使得数字技术在捷克的学校环境中不可避免地适用于所有相关人员——教师、学生和学生。出于这个原因,我们认为有必要绘制出未来的教学学科毕业生是否为这些变化做好了充分的准备。
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引用次数: 1
Innovative changes in the curriculum of information and communication technologies in the Czech Republic from the perspective of primary school teachers 从小学教师的角度看捷克共和国信息与通信技术课程的创新变化
Hana Bucková, Jirí Dostál
The article focuses on issues related to the innovation of the curriculum of informatics and digital technologies in the Czech Republic. Within the research survey, special attention is paid to the opinions of secondary school teachers. It is found out how they view the ongoing curricular changes, which are characterized by strengthening the curriculum focused on algorithmization and programming.
本文主要探讨捷克信息学与数字技术课程改革的相关问题。在研究调查中,特别关注中学教师的意见。调查发现,他们如何看待正在进行的课程变化,其特点是加强课程的重点是算法和编程。
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引用次数: 2
Comparison of Algorithms for Fuzzy Decision Tree Induction 模糊决策树归纳算法的比较
J. Rabcan, Patrik Rusnak, J. Kostolny, R. Stankovic
The objective of the classification is to assign a class label to a data sample based on previous, learned experience. Despite the long tradition of classification algorithms research, there is not a unique technique that yields the best classification performance in all scenarios. Many real-world problems are uncertain. In this case, the crisp classification can be difficult to perform. The usage of fuzzy logic can be useful to describe real-world problems with higher accuracy. In this paper, we describe and compare algorithms of Fuzzy Decision Trees (FDTs), which are an extension of traditional decision trees. These algorithms are popular for their easy understandability and interpretability. But today there are many algorithms for FDT induction. These algorithms differ in many aspects. The most common difference is in information measures for selecting splitting attributes. Generally, the goal of decision tree induction is to create the smallest tree which is the most accurate as possible. In this paper, we use various information measures to induct FDTs and compare the accuracy and size of obtained FDTs. In comparison, information measures that are based on a generalization of the Shannon entropy and cumulative mutual information are included. The comparison shows that FDTs based on the cumulative mutual information acquired the best results. These results will also be included in a course on data mining that is taught at Faculty of Management Science and Informatics of University of Zilina.
分类的目的是根据以前学到的经验为数据样本分配一个类标签。尽管分类算法的研究有着悠久的传统,但并没有一种独特的技术可以在所有场景中产生最佳的分类性能。许多现实世界的问题都是不确定的。在这种情况下,很难执行清晰的分类。使用模糊逻辑可以更准确地描述现实世界的问题。模糊决策树是传统决策树的一种扩展,本文对模糊决策树算法进行了描述和比较。这些算法因其易于理解和可解释性而广受欢迎。但目前有许多FDT诱导算法。这些算法在许多方面有所不同。最常见的区别是选择拆分属性的信息度量。一般来说,决策树归纳法的目标是创建尽可能精确的最小树。在本文中,我们使用各种信息度量来诱导fdt,并比较得到的fdt的精度和大小。相比之下,基于香农熵的泛化和累积互信息的信息度量包括在内。对比结果表明,基于累积互信息的fdt获得了最好的结果。这些结果也将被纳入淄博管理科学与信息学院的一门数据挖掘课程。
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引用次数: 1
期刊
2020 18th International Conference on Emerging eLearning Technologies and Applications (ICETA)
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