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A Methodology for Stock Movement Prediction Using Sentiment Analysis on Twitter and StockTwits Data 基于Twitter和StockTwits数据的情绪分析的股票走势预测方法
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566242
Christina Nousi, Christos Tjortjis
{"title":"A Methodology for Stock Movement Prediction Using Sentiment Analysis on Twitter and StockTwits Data","authors":"Christina Nousi, Christos Tjortjis","doi":"10.1109/SEEDA-CECNSM53056.2021.9566242","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566242","url":null,"abstract":"Application of Machine Learning (ML) and sentiment analysis on data from microblogging services has become a common approach for stock market prediction. In this paper, we propose a methodology using sentiment analysis on Twitter and StockTwits data for Stock movement prediction. The methodology was evaluated by analyzing stock movement and sentiment data. We present a case study focusing on Microsoft stock. We collected tweets from Twitter and StockTwits along with financial data extracted from Finance Yahoo. Sentiment analysis was applied on tweets, and two ML models namely SVM and Logistic Regression were implemented. Best results were achieved when using tweets from Twitter with VADER and SVM. Top F-score was 76.3% and top Area Under Curve (AUC) was 67%. SVM also achieves the greatest accuracy equal to 65.8%, when using StockTwits with TextBlob on this imbalanced data set.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"426 1-2 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77854051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Exploring the role of educational neuroscience in learning through the perspectives of adult vocational education students of computer science in the field of online learning. A case study 通过成人职业教育计算机科学专业学生在在线学习领域的视角，探索教育神经科学在学习中的作用。案例研究
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566229
E. Malliou, Spyridon Doukakis, Sarah Vlachou, Evangelia Filippakopoulou
{"title":"Exploring the role of educational neuroscience in learning through the perspectives of adult vocational education students of computer science in the field of online learning. A case study","authors":"E. Malliou, Spyridon Doukakis, Sarah Vlachou, Evangelia Filippakopoulou","doi":"10.1109/SEEDA-CECNSM53056.2021.9566229","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566229","url":null,"abstract":"Online learning had a decisive role in all levels of education during the pandemic. In this study, we will explore adult vocational education students of computer science that experienced the online education during the school academic year 2020–2021. The study attempts to explore the views of 10 adult students. At the same time, an attempt is made to determine the role of educational neuroscience in students' learning. Participants were asked to answer 14 questions about the online education they had experienced. This was followed by data analysis using NVivo software. According to the findings, 6 students identified the reasons why they prefer to be educated in a physical learning environment and 1 student stated that he prefers a mixed model that will include lessons with both physical and online presence. In addition, 9 out of 10 students stated that they prefer synchronous online teaching to asynchronous. Also, 7 out of 10 students identified that in the theoretical part they were able to achieve the expected learning outcomes but on the other hand, 6 out of 10 learners reported difficulties in attending the workshops. Nevertheless, 8 out of 10 stated that they were quite consistent with the obligations they had during the course. The findings indicate that the principles of educational neuroscience can be a critical component of effective online learning.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"9 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81359627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DataPAL: Data Protection and Authorization Lifecycle framework DataPAL:数据保护和授权生命周期框架
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566212
S. Bandopadhyay, T. Dimitrakos, Yair Diaz, Alicia Y Hariri, Tezcan Dilshener, Antonio La Marra, A. Rosetti
{"title":"DataPAL: Data Protection and Authorization Lifecycle framework","authors":"S. Bandopadhyay, T. Dimitrakos, Yair Diaz, Alicia Y Hariri, Tezcan Dilshener, Antonio La Marra, A. Rosetti","doi":"10.1109/SEEDA-CECNSM53056.2021.9566212","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566212","url":null,"abstract":"This paper introduces a new model for handling data privacy throughout data lifecycle via the introduction of a policy profile using the Abbreviated Language For Authorization (ALFA) policy language. Our approach extends previous models In three complementary ways: (1) By introducing Administration and Delegation Profile (ADP) in ALFA policy where users and companies can restrict the scope of access/usage policies related to data as well as specify a chain of custody for data (moreover such an approach eases up the tasks of handling users' consent); (2) Thanks to our framework Usage Control System Plus (UCS+) users can monitor the usage of data and revoke its usage upon specific conditions or at will; (3) By introducing new states for policy evaluation, i.e. Admissible/NotAdmissible to filter out those applicable policies that were unauthorized in the first place.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"90 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80861666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Rapid Blockchain Scaling with Efficient Transaction Assignment 快速区块链扩展与高效交易分配
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566222
Panagiotis Drakatos, Eleni Koutrouli, A. Tsalgatidou
{"title":"Rapid Blockchain Scaling with Efficient Transaction Assignment","authors":"Panagiotis Drakatos, Eleni Koutrouli, A. Tsalgatidou","doi":"10.1109/SEEDA-CECNSM53056.2021.9566222","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566222","url":null,"abstract":"The abrupt development of cryptocurrencies and blockchain technology has pointed to the importance of deploying large scale, highly robust Byzantine fault-tolerant schemes to handle critical distributed failures in system networks. Although traditional wisdom is to build systems by following synchronous protocols such as PBFT consensus, these protocols strongly rely on network time limitations and only guarantee liveness when the nodes behave arbitrary. This paper presents the design and implementation of Adrastus, a scalable blockchain system. The main contributions of Adrastus are the use of a consistent hashing mechanism which solves load balancing problems and the efficient assignment of transactions on parallel regions of single-chain consensus systems, referred to as zones, without introducing unnecessary overhead. We claim that the Adrastus blockchain system scales linearly without compromising system security. We present theoretical analysis, discuss our solution, and examine the conditions to meet both safety and liveness of our fault-tolerant system.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"41 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90189290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Smart Assistant Nightstand For Hospitals 医院智能助手床头柜
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566220
M. Kalafati, A. Kakarountas
{"title":"A Smart Assistant Nightstand For Hospitals","authors":"M. Kalafati, A. Kakarountas","doi":"10.1109/SEEDA-CECNSM53056.2021.9566220","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566220","url":null,"abstract":"The exponential growth of the number and variety of monitoring devices for patients in the hospital, as well as the improvement of medical equipment and hygiene conditions constitute the core of eHealth projects nowadays. In this study, an assistant, smart nightstand near patient's bed and a novel platform are presented, which have the ability to take vital signs in time via sensors which are connected with the patient and simultaneously the data are sent in the central nursing station. The platform has also an interactive role with patients as it will also contribute to their entertainment. Also, the sterilization of objects with UV lamps has been widely introduced in our daily life, mainly due to Covid-19 and other viruses and bacteria that exist in hospitals and patients are at risk of infection. Thus, we have constructed in our nightstand a disinfection area for the patient's personal hygiene items. Last but not least, we have introduced a construction of drug dispenser which will alert the patient to the drop of his medication.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"32 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86587973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Virtual Reality Escape Rooms for STEM Education in Industry 4.0: Greek Teachers Perspectives 工业4.0中STEM教育的虚拟现实逃生室:希腊教师的观点
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566265
S. Mystakidis, George Papantzikos, C. Stylios
{"title":"Virtual Reality Escape Rooms for STEM Education in Industry 4.0: Greek Teachers Perspectives","authors":"S. Mystakidis, George Papantzikos, C. Stylios","doi":"10.1109/SEEDA-CECNSM53056.2021.9566265","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566265","url":null,"abstract":"Science, Technology, Engineering and Mathematics (STEM) skills comprise a crucial meta-discipline for success in the 21st century. Education in the industry 4.0 era can be enhanced by adopting Virtual (VR), Mixed (MR), and Augmented (AR). VR can support creative student-centered teaching and learning methods in STEM, such as playful learning, gameful learning (gamification), and serious games. Serious escape rooms are digital interactive, live adventure breakout games with a pedagogical rationale. This paper examines the perceptions of K-12 school education teachers towards digital educational escape rooms for STEM education in VR environments. Twenty-eight Greek teachers responded to a questionnaire after having experienced a cost-effective science-themed digital escape room. Results indicate that teachers reacted positively to the VR escape room, appreciating its value for learning. Moreover, they are eager to engage in professional development activities and embrace gameful learning methods.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"2 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85811751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Investigating Parody from Social Media Accounts 调查社交媒体账户中的恶搞行为
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566233
Muhammad Abu Talha, Adeel Zafar
{"title":"Investigating Parody from Social Media Accounts","authors":"Muhammad Abu Talha, Adeel Zafar","doi":"10.1109/SEEDA-CECNSM53056.2021.9566233","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566233","url":null,"abstract":"Parody is a widespread comic on different social media platforms. As the usage of social media increases, the number of parody accounts increases as well. The main purpose of parody accounts is to spread fake news or to criticize someone in comic ways. In this paper, we investigate parody for different social media accounts. For this study, a customized tweets dataset is created related to different Pakistani personalities and companies. The experiment is carried out using different machine learning and deep learning methods. Our results indicate an accuracy of 92% using RoBERTa.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"32 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90364927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Neural Network-Based approach for Hemiplegia Detection via Accelerometer Signals 基于加速度计信号的偏瘫检测方法
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566216
Vasileios Christou, Alexandros Bantaloukas-Arjmand, D. Dimopoulos, D. Varvarousis, A. Tzallas, Ch Gogos, M. Tsipouras, A. Ploumis, N. Giannakeas
{"title":"Neural Network-Based approach for Hemiplegia Detection via Accelerometer Signals","authors":"Vasileios Christou, Alexandros Bantaloukas-Arjmand, D. Dimopoulos, D. Varvarousis, A. Tzallas, Ch Gogos, M. Tsipouras, A. Ploumis, N. Giannakeas","doi":"10.1109/SEEDA-CECNSM53056.2021.9566216","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566216","url":null,"abstract":"This article introduces a method that can automatically classify the hemiplegia type (right or left side of the body is paralyzed) between healthy and non-healthy subjects. The proposed method utilizes the data taken from the accelerometer sensor of the RehaGait mobile gait analysis system. These data undergo a pre-processing and feature extraction stage before being sent as input to a scaled conjugate gradient backpropagation (SCG-BP) trained neural network. The proposed system is tested using a custom-created dataset containing 10 healthy and 20 patients suffering from hemiplegia (right or left). The experimental part of the system utilized 7 sensors placed on the left and right foot, the left and right shank, the left and right thigh, and the hip of each subject. Each sensor captured a 3-dimensional (3D) signal from 3 different device types: accelerometer, magnetometer, and gyroscope. The system utilized and split into 2-second windows only the accelerometer data, achieving a classification accuracy of 87.71%.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"66 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90667027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Automatic Parkinson's tremor assessment with data analysis from daily activities 自动帕金森震颤评估与数据分析，从日常活动
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566225
Vasiliki Fiska, Vasiliki Gakilazou, N. Katertsidis, A. Tzallas, N. Giannakeas, M. Tsipouras
{"title":"Automatic Parkinson's tremor assessment with data analysis from daily activities","authors":"Vasiliki Fiska, Vasiliki Gakilazou, N. Katertsidis, A. Tzallas, N. Giannakeas, M. Tsipouras","doi":"10.1109/SEEDA-CECNSM53056.2021.9566225","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566225","url":null,"abstract":"A new approach for the assessment of motor symptoms caused by Parkinson's disease (PD), based on data recorded using a smart mobile phone, is presented in this manuscript. Data were obtained from the online platform kaggle.com, and were analyzed based on machine learning techniques to produce a comprehensive physician report, presenting motor symptoms in everyday life. The idea of this study is to equip PD patients with a smartphone, which will monitor signals in real time for a period of time in order to enhance the medical diagnosis routine of a physician, providing information about the overall picture of the patient's motor condition, resulting in the provision of individualized treatment to the patient.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"7 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90049053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Automated Quantification of Pancreatic Steatosis in Biopsy Images using a Classification Based System 使用基于分类的系统对活检图像中的胰腺脂肪变性进行自动量化
计算机工程与设计 Pub Date : 2021-09-24 DOI: 10.1109/SEEDA-CECNSM53056.2021.9566280
Alexandros Bantaloukas-Arjmand, M. Pappas, O. Tsakai, V. Christon, A. Tzallas, M. Tsipouras, R. Forlano, P. Manousou, R. Goldin, E. Glavas, N. Giannakeas
{"title":"Automated Quantification of Pancreatic Steatosis in Biopsy Images using a Classification Based System","authors":"Alexandros Bantaloukas-Arjmand, M. Pappas, O. Tsakai, V. Christon, A. Tzallas, M. Tsipouras, R. Forlano, P. Manousou, R. Goldin, E. Glavas, N. Giannakeas","doi":"10.1109/SEEDA-CECNSM53056.2021.9566280","DOIUrl":"https://doi.org/10.1109/SEEDA-CECNSM53056.2021.9566280","url":null,"abstract":"Non-Alcoholic Fatty Pancreas Disease (NAFPD) is the most common pancreatic condition in adults and is usually associated with obesity and insulin resistance. It is a new medical term that indicates the development of pancreatic steatosis, which at an advanced stage leads to the irreversible replacement of acinar cells with fat droplets. Although increasing prevalence rates are recorded worldwide for this condition, it has been studied to a small extent due to the diagnostic limitations of noninvasive medical imaging methods. In recent years and with the development of modern computer vision systems, digital pathology through biopsy imaging systems has become the gold standard in modern clinical trials. The current work presents an automated diagnostic tool for measuring the fat ratio in pancreatic biopsy specimens. The automated analysis is performed on a set of 20 histological images using supervised machine learning algorithms. Its diagnostic performance presents a minimum fat quantification error of 0.23% compared to that obtained from human semi-quantitative estimates.","PeriodicalId":68279,"journal":{"name":"计算机工程与设计","volume":"27 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85257935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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