Journal of Universal Computer Science最新文献_第2页

Smart Fall Detection by Enhanced SVM with Fuzzy Logic Membership Function 基于模糊隶属函数的增强支持向量机智能跌倒检测

4区计算机科学

Journal of Universal Computer Science Pub Date : 2023-09-28 DOI: 10.3897/jucs.91399

Mohammad Kchouri, Norharyati Harum, Hussein Hazimeh, Ali Obeid

{"title":"Smart Fall Detection by Enhanced SVM with Fuzzy Logic Membership Function","authors":"Mohammad Kchouri, Norharyati Harum, Hussein Hazimeh, Ali Obeid","doi":"10.3897/jucs.91399","DOIUrl":"https://doi.org/10.3897/jucs.91399","url":null,"abstract":"Falling is a critical issue for disabled people, and it leads to potentially serious injuries and death. Smart fall detection is a technology that depends on sensors and auxiliary devices that seek to improve the quality of life and enhance the lifestyle of disabled people. So far, the most widely used fall prediction methods collect data from inertial measurement unit (IMU) sensors. In addition, they use thresholds to identify falls based on artificial experiences or machine learning (ML) algorithms. Nonetheless, these approaches still require extensive classification and calibration. In this paper, we suggest a new technique to detect falls by combining Fuzzy Logic (FL) and Support Vector Machine (SVM). The FL model is built by using a fuzzy membership function along with the input dataset to obtain the intermediate output. Because combining these two algorithms is not an easy task, we leverage SVM with a kernel comprised of a fuzzy membership function and thus build a new model known as FSVM. Besides, the hyperplane of the SVM is used as the separating plane to replace the traditional threshold method for detecting falling Activities of Daily Living (ADLs) on a comprehensive dataset containing simulated falling ADLs, non-falling ADLs, and scripted ADLs, including falling ADLs and unscripted ADLs performed by volunteers with our designed device. The results show that no false-positive rate had been triggered, and 100% specificity was achieved for ADL. An overall accuracy of about 99.87% in detecting the fall function was obtained. Furthermore, the overall sensitivity of 100% with no false negative rate obtained was achieved by implementing the proposed method. The attained results validate that our introduced method can effectively learn from features extracted from a multiphase fall model.&nbsp;","PeriodicalId":54757,"journal":{"name":"Journal of Universal Computer Science","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135343724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Semi-Supervised Semantic Segmentation for Identification of Irrelevant Objects in a Waste Recycling Plant 基于半监督语义分割的垃圾回收厂无关目标识别

4区计算机科学

Journal of Universal Computer Science Pub Date : 2023-05-28 DOI: 10.3897/jucs.87643

César Domínguez, Jónathan Heras, Eloy Mata, Vico Pascual, Lucas Fernández-Cedrón, Marcos Martínez-Lanchares, Jon Pellejero-Espinosa, Antonio Rubio-Loscertales, Carlos Tarragona-Pérez

{"title":"Semi-Supervised Semantic Segmentation for Identification of Irrelevant Objects in a Waste Recycling Plant","authors":"César Domínguez, Jónathan Heras, Eloy Mata, Vico Pascual, Lucas Fernández-Cedrón, Marcos Martínez-Lanchares, Jon Pellejero-Espinosa, Antonio Rubio-Loscertales, Carlos Tarragona-Pérez","doi":"10.3897/jucs.87643","DOIUrl":"https://doi.org/10.3897/jucs.87643","url":null,"abstract":"In waste recycling plants, measuring the waste volume and weight at the beginning of the treatment process is key for a better management of resources. This task can be conducted by using orthophoto images, but it is necessary to remove from those images the objects, such as containers or trucks, that are not involved in the measurement process. This work proposes the application of deep learning for the semantic segmentation of those irrelevant objects. Several deep architectures are trained and compared, while three semi-supervised learning methods (PseudoLabeling, Distillation and Model Distillation) are proposed to take advantage of non-annotated images. In these experiments, the U-net++ architecture with an EfficientNetB3 backbone, trained with the set of labelled images, achieves the best overall multi Dice score of 91.23%. The application of semi-supervised learning methods further boosts the segmentation accuracy in a range between 1.31% and 2.59%, on average.","PeriodicalId":54757,"journal":{"name":"Journal of Universal Computer Science","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135831710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Applying Brand Equity Theory to Understand the Opinion of Consumers in Social Media 运用品牌资产理论理解社交媒体中的消费者意见

IF 1 4区计算机科学

Journal of Universal Computer Science Pub Date : 2016-01-01 DOI: 10.3217/jucs-022-05-0709

E. Kalampokis, Areti Karamanou, E. Tambouris, K. Tarabanis

引用次数: 0

An MDA approach for goal-oriented requirement analysis in Web engineering Web工程中面向目标的需求分析的MDA方法

IF 1 4区计算机科学

Journal of Universal Computer Science Pub Date : 2010-09-01 DOI: 10.3217/JUCS-016-17-2475

José Alfonso Aguilar Calderón, Irene Garrigós Fernández, José Norberto Mazón López, Juan Carlos Trujillo Mondéjar

{"title":"An MDA approach for goal-oriented requirement analysis in Web engineering","authors":"José Alfonso Aguilar Calderón, Irene Garrigós Fernández, José Norberto Mazón López, Juan Carlos Trujillo Mondéjar","doi":"10.3217/JUCS-016-17-2475","DOIUrl":"https://doi.org/10.3217/JUCS-016-17-2475","url":null,"abstract":"Web designers usually ignore how to model real user expectations and goals, mainly due to the large and heterogeneous audience of the Web. This fact leads to websites which are difficult to comprehend by visitors and complex to maintain by designers. In order to ameliorate this scenario, an approach for using the i* modeling framework in Web engineering has been developed in this paper. Furthermore, due to the fact that most of the existing Web engineering approaches do not consider how to derive conceptual models of the Web application from requirements analysis we also propose the use of MDA (Model Driven Architecture) in Web engineering for: (i) the definition of the requirements of a Web application in a Computational Independent Model (CIM), (ii) the description of Platform Independent Models (PIMs), and (iii) the definition of a set of QVT (Query/View/Transformation) transformations for the derivation of PIMs from requirements specification (CIM), thus to enable the automatic generation of Web applications. Finally, we include a sample of our approach in order to show its applicability and we describe a prototype tool as a proof of concept of our research.","PeriodicalId":54757,"journal":{"name":"Journal of Universal Computer Science","volume":"57 1","pages":"2475-2494"},"PeriodicalIF":1.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78634712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28

Computable Separation in Topology, from T_0 to T_3 拓扑中的可计算分离，从T_0到T_3

IF 1 4区计算机科学

Journal of Universal Computer Science Pub Date : 2009-01-01 DOI: 10.4230/OASICS.CCA.2009.2276

K. Weihrauch

引用次数: 17

LIFT – A Legacy InFormation Retrieval Tool LIFT -一个遗留信息检索工具

IF 1 4区计算机科学

Journal of Universal Computer Science Pub Date : 2008-01-01 DOI: 10.6084/M9.FIGSHARE.96670.V1

K. Brito, V. Garcia, E. Almeida, S. Meira

引用次数: 6

Cost model for bitstream access services with QoS parameters 带QoS参数的比特流接入业务的成本模型

IF 1 4区计算机科学

Journal of Universal Computer Science Pub Date : 2008-01-01 DOI: 10.3217/JUCS-014-05-0653

Laura Rodríguez de Lope López, Klaus Dietrich Hackbarth Planeta

引用次数: 6

Calibrating Software Cost Models to Department of Defense DatabasesA Review of Ten Studies 在国防部数据库中校准软件成本模型——十项研究综述

IF 1 4区计算机科学

Journal of Universal Computer Science Pub Date : 1998-11-01 DOI: 10.1080/10157891.1998.10462570

D. Ferens, D. Christensen

引用次数: 38

What is a Random String 什么是随机字符串

IF 1 4区计算机科学

Journal of Universal Computer Science Pub Date : 1996-01-01 DOI: 10.1007/978-3-642-80350-5_5

Cristian S. Calude

引用次数: 2

An Efficient Distributed Algorithm For st-numbering The Vertices Of A Biconnected Graph 双连通图顶点st-编号的一种高效分布式算法

IF 1 4区计算机科学

Journal of Universal Computer Science Pub Date : 1996-01-01 DOI: 10.1007/978-3-642-80350-5_53

Rohan F. M. Aranha, C. Rangan

引用次数: 8