Research Conference of the South African Institute of Computer Scientists and Information Technologists最新文献_第2页

Maximizing the Organization's Technology Leverage through Effective Conflict Risk Management within Agile Teams 在敏捷团队中通过有效的冲突风险管理最大化组织的技术杠杆

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351142

Mothepane M. Tshabalala, L. Khoza

引用次数: 3

Attributes Extraction for Fine-grained Differentiation of the Internet of Things Patterns 面向物联网模式细粒度区分的属性提取

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351118

V. Sithole, L. Marshall

{"title":"Attributes Extraction for Fine-grained Differentiation of the Internet of Things Patterns","authors":"V. Sithole, L. Marshall","doi":"10.1145/3351108.3351118","DOIUrl":"https://doi.org/10.1145/3351108.3351118","url":null,"abstract":"The Internet of Things (IoT) is a paradigm with multitudes of design patterns. However, in order to use these patterns quickly and effectively, one must be able to make a differentiation between the existing patterns. At the moment, there is no known catalogue for the IoT patterns in which each pattern is described at a fine-grained level, i.e. in terms of its attributes. The need to discuss these patterns in terms of their attributes is important as it enables ease of understanding and allows us to group related patterns together for speedy retrieval. In this paper, we present an attributes extraction system which generates a list of attributes for a given IoT pattern. The attributes extraction system is based on identification and extraction of important sentences which describe the core properties of the given IoT pattern. The system uses multiple linguistics features to identify the most important sentences in a document with regard to describing the core essence of a given pattern. The system calculates an independent score for each sentence per feature. Through aggregation, the independent scores for each feature can then be combined to give a weighted mean score for each sentence. The evaluation results show that the attributes selected by the system are consistent with human ranking in the bulk of the examined documents.","PeriodicalId":269578,"journal":{"name":"Research Conference of the South African Institute of Computer Scientists and Information Technologists","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127643847","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: 3

A Computational Analysis of News Media Bias: A South African Case Study 新闻媒体偏见的计算分析:一个南非案例研究

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351134

Laurenz A. Cornelissen, Lucia I. Daly, Qhama Sinandile, Heinrich de Lange, R. J. Barnett

引用次数: 4

The role of SME dynamic capabilities on the evaluation of existing ICT 中小企业动态能力对现有信息通信技术评价的作用

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351119

Edzai Kademeteme, H. Twinomurinzi

{"title":"The role of SME dynamic capabilities on the evaluation of existing ICT","authors":"Edzai Kademeteme, H. Twinomurinzi","doi":"10.1145/3351108.3351119","DOIUrl":"https://doi.org/10.1145/3351108.3351119","url":null,"abstract":"Small and medium enterprises (SMEs) are exposed to agile and dynamic environments where information and communication technologies (ICTs) change frequently. As such, SMEs need to be counter-agile in response to these changes. The ability of an SME to respond dynamically to agile business environments is called dynamic capabilities. This paper investigated the role that SME dynamic capabilities play in the evaluation of existing ICTs before making adoption decisions to switching to emerging ICTs. The study collected data from 222 SME owners across South Africa. The data collected were analysed quantitatively, using correlation and regression analysis. The results obtained suggest that SMEs in this study perceive that they have absorptive and innovative capabilities, but they do not possess innovative capabilities. While SMEs perceive themselves to demonstrate absorptive and adaptive capabilities, these capabilities do not influence their decision to switch to new emerging and enticing ICTs despite knowing of its existence. The findings suggests that South African SMEs do not consider new and emerging ICT as offering advantages. The findings also suggest that, instead of SME dynamic capabilities there might be other factors such as social, technical and economic or financial factors that might assist in the evaluation of existing ICTs. Future research should consider investigating these inferences.","PeriodicalId":269578,"journal":{"name":"Research Conference of the South African Institute of Computer Scientists and Information Technologists","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128509150","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: 5

Edge-preserving smoothing filters for improving object classification 用于改进目标分类的边缘保持平滑滤波器

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351125

Vusi Skosana, Dumisani Kunene

引用次数: 2

Cross-Sample Community Detection and Sentiment Analysis: South African Twitter 跨样本社区检测和情感分析:南非Twitter

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351135

Laurenz A. Cornelissen, Clarice de Bruyn, Maphiri K. Ledingwane, Pieter Theron, P. Schoonwinkel, R. J. Barnett

引用次数: 1

Does automation influence career decisions among South African students? 自动化对南非学生的职业决定有影响吗?

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351137

Sakhumzi N. Mbilini, D. Roux, D. Parry

引用次数: 3

Segmenting objects with indistinct edges, with application to aerial imagery of vegetation 边缘不清晰的物体分割，应用于植被航拍图像

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351124

Katherine James, K. Bradshaw

{"title":"Segmenting objects with indistinct edges, with application to aerial imagery of vegetation","authors":"Katherine James, K. Bradshaw","doi":"10.1145/3351108.3351124","DOIUrl":"https://doi.org/10.1145/3351108.3351124","url":null,"abstract":"Image segmentation mask creation relies on objects having distinct edges. While this may be true for the objects seen in many image segmentation challenges, it is less so when approaching tasks such as segmentation of vegetation in aerial imagery. Such datasets contain indistinct edges, or areas of mixed information at edges, which introduces a level of annotator subjectivity at edge pixels. Existing loss functions apply equal learning ability to both these pixels of low and high annotation confidence. In this paper, we propose a weight map based loss function that takes into account low confidence in the annotation at edges of objects by down-weighting the contribution of these pixels to the overall loss. We examine different weight map designs to find the most optimal one when applied to a dataset of aerial imagery of vegetation, with the task of segmenting a particular genus of shrub from other land cover types. When compared to inverse class frequency weighted binary cross-entropy loss, we found that using weight map based loss produced a better performing model than binary cross-entropy loss, improving F1 score by 4%.","PeriodicalId":269578,"journal":{"name":"Research Conference of the South African Institute of Computer Scientists and Information Technologists","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124048879","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 Scalable Database Model of RFI Data for the MeerKAT Radio Telescope MeerKAT射电望远镜RFI数据的可扩展数据库模型

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351127

Gerald Nathan Balekaki, M. Kuttel, A. Schroeder, Sarah Blyth, S. Berman

引用次数: 1

Radio Frequency Identification Implementation Challenges: A South African Case Study 射频识别实施的挑战:南非案例研究

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2019-09-17 DOI: 10.1145/3351108.3351140

Morné Esau, Lisa F. Seymour

引用次数: 0