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Personalized presentations from community assets 来自社区资产的个性化演示
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526208
R. Guimarães, Pablo César, D. Bulterman
{"title":"Personalized presentations from community assets","authors":"R. Guimarães, Pablo César, D. Bulterman","doi":"10.1145/2526188.2526208","DOIUrl":"https://doi.org/10.1145/2526188.2526208","url":null,"abstract":"Creating compelling multimedia productions is a non-trivial problem. The problem is compounded when authors want to integrate community media assets: media fragments contributed by a potentially wide and anonymous recording community. In this paper, we report on a hybrid authoring approach that provides mixed support for automated creation and manual enhancement of personalized multimedia presentations. We target small-scale events (such as a high school music concert), where lightly annotated media assets are provided. Our assumption is that enthusiastic, but less experienced, editors (e.g., parents and family members) will want to highlight personal aspects of each event: a particular child, a particular instrument or a particular solo. This places a requirement on a system that helps users to select appropriate content of personal interest, and that helps building compelling presentations with minimum user effort. Based on a 4-years user-centered evaluation process, this paper provides useful insights into how a multimedia authoring system should be designed and architected for helping users in creating personalized video stories they care about.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115827501","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
Towards a distributed architecture for context-aware mobile applications in UbiComp 面向UbiComp中上下文感知移动应用的分布式架构
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526209
J. Lopes, M. Gusmão, R. Souza, Patricia Davet, Alexandre Souza, C. Costa, J. Barbosa, A. Pernas, A. Yamin, C. Geyer
{"title":"Towards a distributed architecture for context-aware mobile applications in UbiComp","authors":"J. Lopes, M. Gusmão, R. Souza, Patricia Davet, Alexandre Souza, C. Costa, J. Barbosa, A. Pernas, A. Yamin, C. Geyer","doi":"10.1145/2526188.2526209","DOIUrl":"https://doi.org/10.1145/2526188.2526209","url":null,"abstract":"The applications in Ubiquitous Computing (UbiComp) environments must be aware of their contexts of interest and adapt to changes in them. Thus, a major research challenge in the area of UbiComp is related to context awareness. Considering the high distribution, heterogeneity, dynamism, and mobility of ubiquitous environments, this paper presents an architectural model for context awareness, called EXEHDA-UC (Execution Environment for Highly Distributed Applications - Ubiquitous Context awareness). The proposal includes elements to support contextual data acquisition, actuation on the environment, and processing of contextual information. We consider that the main contribution of this work is an architecture that supports the managing of the acquisition, storage, and processing of context data, in a distributed way, independently of the application, in an autonomic and rule-based perspective. To assess the functionalities of the EXEHDA-UC, we present a case study, highlighting the prototypes developed, technologies employed, and tests realized.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121369510","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: 13
Automated architectural evaluation of web information systems 网络信息系统的自动化体系结构评估
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526193
Felipe A. P. Pinto, U. Kulesza, E. Guerra, João Maria Júnior, Leo Silva
{"title":"Automated architectural evaluation of web information systems","authors":"Felipe A. P. Pinto, U. Kulesza, E. Guerra, João Maria Júnior, Leo Silva","doi":"10.1145/2526188.2526193","DOIUrl":"https://doi.org/10.1145/2526188.2526193","url":null,"abstract":"Traditional scenario-based architectural analysis methods rely on manual review-based evaluation that requires advanced skills from architects and developers. They are usually applied when the architecture is under development, but before its implementation has begun. The system implementation is one additional and fundamental element that should be used and considered during the software architecture evaluation. In this paper, we propose an approach to add information, which ideally should come from traditional evaluation methods, about scenarios and quality attributes to the source code of web-based systems using metadata. The main aim is to enable the automatic architecture analysis by producing a report with information about scenarios, quality attributes and source code assets, such as: (i) the potential tradeoff points among quality attributes, (ii) the execution time for scenarios and if it has failed or not. Up to now, the approach has been applied mainly to web-based systems, but it can be adapted to other software domains. The paper also presents the tool used to perform static and dynamic analysis, and the results of its application to an e-commerce web system and an enterprise information web system.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122520898","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
Designing and developing interactive multimedia applications 设计和开发交互式多媒体应用程序
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2528281
N. Correia
{"title":"Designing and developing interactive multimedia applications","authors":"N. Correia","doi":"10.1145/2526188.2528281","DOIUrl":"https://doi.org/10.1145/2526188.2528281","url":null,"abstract":"This talk presents the design and development process of interactive multimedia and multimodal systems used in diverse environments. The technologies, including new sensors, interaction surfaces and semantic information processing techniques will be described in the context where they were used. The systems result from collaborative projects in several fields, ranging from cultural heritage to contemporary art and dance. The dialogue with stakeholders from different areas and the impact on the resulting outcomes will be discussed, along with the process of setting up, specifying and developing interdisciplinary projects and the methodologies that are used. Recent work on motion annotation to help choreographic work, image analysis of paintings and digital art projects will be described. The academic and research environment and programs in which this work is done are also presented.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127748670","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
Evaluation of CUDA GPU architecture as H.264 intra coding acceleration engine 作为H.264帧内编码加速引擎的CUDA GPU架构的评价
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526230
R. Husemann, V. Roesler, J. V. D. Lima, M. Gobbi
{"title":"Evaluation of CUDA GPU architecture as H.264 intra coding acceleration engine","authors":"R. Husemann, V. Roesler, J. V. D. Lima, M. Gobbi","doi":"10.1145/2526188.2526230","DOIUrl":"https://doi.org/10.1145/2526188.2526230","url":null,"abstract":"Currently the high computational complexity makes it very difficult to produce a whole high definition real-time H.264 encoder solution, for conventional personal computer platform, based only on single-threaded software implementation. Considering that, the current paper analyses the potential of using modern general purpose graphical processing technologies, such as NVIDIA CUDA ® platform, as acceleration engines to improve the overall performance of a computer based H.264 intra video encoder. Performed experiments allowed discriminating the real gains when replacing a CPU based only solution by a GPU identifying some practical bottlenecks related with that solution. The most efficient proposal was finally compared with the original H.264/AVC reference code and the optimized x264 open source library codec, registering significant performance gains (in same cases higher than 7.6x).","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"192 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114222973","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
Using genetic programming to detect fraud in electronic transactions 利用遗传程序检测电子交易中的欺诈行为
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526221
Carlos A. S. Assis, A. Pereira, Marconi de Arruda Pereira, E. G. Carrano
{"title":"Using genetic programming to detect fraud in electronic transactions","authors":"Carlos A. S. Assis, A. Pereira, Marconi de Arruda Pereira, E. G. Carrano","doi":"10.1145/2526188.2526221","DOIUrl":"https://doi.org/10.1145/2526188.2526221","url":null,"abstract":"The volume of online transactions has raised a lot in last years, mainly due to the popularization of e-commerce, such as Web retailers. We also observe a significant increase in the number of fraud cases, resulting in billions of dollars losses each year worldwide. Therefore it is important and necessary to developed and apply techniques that can assist in fraud detection, which motivates our research. This work proposes the use of Genetic Programming (GP), an Evolutionary Computation approach, to model and detect fraud (charge back) in electronic transactions, more specifically in credit card operations. In order to evaluate the technique, we perform a case study using an actual dataset of the most popular Brazilian electronic payment service, called UOL PagSeguro. Our results show good performance in fraud detection, presenting gains up to 17.72% percent compared to the baseline, which is the actual scenario of the corporation.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115384140","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: 14
CSCoupons: applying context-sensitivity to increase fast food advertising usefulness 优惠券:应用上下文敏感性来增加快餐广告的有用性
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526233
R. Falcão, Vaninha Vieira
{"title":"CSCoupons: applying context-sensitivity to increase fast food advertising usefulness","authors":"R. Falcão, Vaninha Vieira","doi":"10.1145/2526188.2526233","DOIUrl":"https://doi.org/10.1145/2526188.2526233","url":null,"abstract":"Companies spend too much money on advertising in order to improve their sales. However, the ratio between investment and effective sales is low. Increasing the usefulness of provided ads and discount coupons is an ongoing challenge in advertising, in order to enhance return on investments, reducing wastage and increasing revenue. Ubiquitous computing offers many features that are considered compliant to advertising needs. A key aspect in ubiquitous computing is the use of context information to provide information more relevant to users, according to their current situation and environment. This paper introduces CSCoupons, a mobile context-sensitive system to deliver discount coupons. We conduct an experiment with a developed prototype of CSCoupons to assess the ideas about fast food coupons in shopping malls. To measure the utility rate of delivered discount coupons, we compared two versions of the prototype: with and without considering context information. The preliminary results show context-sensitivity highly increases advertising usefulness.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129618275","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
Measuring sentiments in online social networks 测量在线社交网络中的情绪
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526196
Matheus Araújo, Pollyanna Gonçalves, Fabrício Benevenuto
{"title":"Measuring sentiments in online social networks","authors":"Matheus Araújo, Pollyanna Gonçalves, Fabrício Benevenuto","doi":"10.1145/2526188.2526196","DOIUrl":"https://doi.org/10.1145/2526188.2526196","url":null,"abstract":"Sentiment analysis has being used in several applications including the analysis of the repercussion of events in online social networks (OSNs), as well as to summarize public perception about products and brands on discussions on those systems. There are multiple methods to measure sentiments, varying from lexical-based approaches to machine learning methods. Despite the wide use and popularity of some those methods, it is unclear which method is better for identifying the polarity (i.e. positive or negative) of a message, as the current literature does not provide a comparison among existing methods. This comparison is crucial to allow us to understand the potential limitations, advantages, and disadvantages of popular methods in the context of OSNs messages. This work aims at filling this gap by presenting a comparison between 8 popular sentiment analysis methods. Our analysis compares these methods in terms of coverage and in terms of correct sentiment identification. We also develop a new method that combines existing approaches in order to provide the best coverage results with competitive accuracy. Finally, we present iFeel, a Web service which provides an open API for accessing and comparing results across different sentiment methods for a given text.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115956704","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: 15
HTML5, CSS3 and JQuery mobile for intelligent home control HTML5, CSS3和JQuery移动智能家居控制
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2528539
J. A. Guerrero, Alessandra Alaniz Macedo
{"title":"HTML5, CSS3 and JQuery mobile for intelligent home control","authors":"J. A. Guerrero, Alessandra Alaniz Macedo","doi":"10.1145/2526188.2528539","DOIUrl":"https://doi.org/10.1145/2526188.2528539","url":null,"abstract":"Web pattern technologies such as HTML5, CSS3, JQuery and JQueryMobile have been used to develop web applications in different scenarios. As a use case, these technologies are being exploited in order to develop domotics systems. In the past, automatic environments were limited to big industries. Nowadays this scenario is rapidly changing. Home Control System (HCS) are became frequent and part of modern home. HCS' users are looking for quality of life and sustainability. Our work present and discuss the following items: 1) Development of human computer interface to HCS using some web technologies: HTML5, CSS3, JQuery and JQueryMobile; and 2) Concepts and components of HCS; 3) Examples of HCS and Primary Health System (PHS); and 4) Use Cases.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"136-137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131789116","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
MARKER: a tool for building interactive applications for t-learning MARKER:为t学习构建交互式应用程序的工具
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526236
Sttiwe Washington Ferreira de Sousa, E. P. Bezerra, Ismênia Mangueira Soares Soares, Edna Gusmão de Góes Brennand
{"title":"MARKER: a tool for building interactive applications for t-learning","authors":"Sttiwe Washington Ferreira de Sousa, E. P. Bezerra, Ismênia Mangueira Soares Soares, Edna Gusmão de Góes Brennand","doi":"10.1145/2526188.2526236","DOIUrl":"https://doi.org/10.1145/2526188.2526236","url":null,"abstract":"The growth of distance education has been enhanced by Massive Open Online Course and by the production of content broadcasted on television. The type of learning undertaken by Interactive Digital Television (iDTV) is also called Television-Learning (T- learning). Due to the possibilities of interactivity emerged with the creation of middleware Ginga, the T-Learning can cover a large number of learners. The marking video is a set of techniques used to insert additional interactive content in a video. As the development of applications for iDTV is still a costly process, because it requires a multidisciplinary team of developers to create tools for producing interactive applications for iDTV is a promising solution. The need for specific knowledge of technology or programming language should not be a prerequisite for this team. This paper presents a tool, called MARKER, for building interactive applications for iDTV whose main actors are the teacher (content creator) and student (interactive video user).","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116964865","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: 4
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