Proceedings of the 21st Brazilian Symposium on Multimedia and the Web最新文献

{"title":"Big Crisis Data, an Open Invitation","authors":"C. Castillo","doi":"10.1145/2820426.2822359","DOIUrl":"https://doi.org/10.1145/2820426.2822359","url":null,"abstract":"The talk will be an introduction for researchers and developers to algorithms and systems for dealing with social media messages during time-critical events, with a focus on natural and man-made disasters. Current methods bring together computational methods from many disciplines, including natural language processing, data mining, and information retrieval.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117225919","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}

{"title":"Collaborative Filtering Based on Semantic Distance Among Items","authors":"Salmo M. S. Júnior, M. Manzato","doi":"10.1145/2820426.2820466","DOIUrl":"https://doi.org/10.1145/2820426.2820466","url":null,"abstract":"This paper proposes a new method to compute the semantic distance among items in collaborative filtering based on k-nearest neighbors. This approach predicts the rating that a user u would give to an item i calculating the similarity between i and other items rated by u. This items' similarity is obtained using a semantic distance metric proposed in this paper. The technique exploits ontologies available on the Web through the Linked Open Data. This is possible because they have semantic descriptions, structured by links, that define a knowledge domain. The equation to calculate the semantic distance is an extension of a related work. We propose to assign weight to links to show the specificity of item's categories. Our proposal was evaluated with a movies dataset and it was shown that significant improvements can be achieved when compared to the baseline without weighted links.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121132181","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}

{"title":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","authors":"Marco Cristo, D. Oliveira, A. Pereira, Fabrício Benevenuto, M. Moreno, V. Roesler","doi":"10.1145/2820426","DOIUrl":"https://doi.org/10.1145/2820426","url":null,"abstract":"We are delighted to welcome you to the 21st Brazilian Symposium on Multimedia and the Web -- WebMedia'15. WebMedia'15 is an annual symposium sponsored by the Brazilian Computer Society (SBC -- Sociedade Brasileira de Computacao) in the fields of Multimedia, Hypermedia and Web. WebMedia's 21st edition is held from October 27th to October 30th, 2015 in Manaus, capital of Amazonas State -- Brazil. \u0000 \u0000WebMedia'15 is organized by the Group of Treatment of Information (GTI) from the Federal University of Amazonas (UFAM) and has many other sponsors and supporters including FAPEAM, CGI.br, NIC.br, CNPq, RNP, and W3C. The central feature of the symposium, since its inception, is its Technical Program. The symposium's technical program is composed by technical sessions with full papers, short papers, short courses, and workshops (Thesis and Dissertation Workshop, Tools and Applications Workshop and Undergraduate Research Workshop). \u0000 \u0000WebMedia'15 proceedings include 21 full papers and 17 short papers. These papers were selected from 61 full paper submissions and 31 short paper submissions, for acceptance rates of 34% and 55%, respectively. The Symposium's Program Committee worked very hard to select papers that will be presented and published from among many submissions of excellent quality. We thank all the submitting authors for their research efforts and for their submissions and congratulate those who had their work accepted. \u0000 \u0000In addition to the Technical Program, this year's symposium features a diverse range of activities including Panels, Keynote Speakers, and Courses included on the First International Amazon School on Web and Research Technologies (WeRT) that will take place along with Webmedia. Attendants of Webmedia will have free access to courses of WeRT, depending on space availability. Additionally, the conference will hold the II Workshop on Video Collaboration, promoted by Brazilian National Research and Educational Network (Rede Nacional de Ensino e Pesquisa -- RNP). \u0000 \u0000Finally, we pay homage to Professor Luiz Fernando Gomes Soares, who left us this year. He deeply contributed to the Brazilian scientific computing community, and particularly to the Webmedia community. No words can express his sudden loss. It is in his memory that we hold the twenty-first edition of the event he helped create.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130708627","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}

{"title":"Incorporation of Syntactic-Semantic Aspects in a LIBRAS Machine Translation Service to Multimedia Platforms","authors":"M. A. C. B. Lima, T. Araújo, Erickson S. de Oliveira","doi":"10.1145/2820426.2820434","DOIUrl":"https://doi.org/10.1145/2820426.2820434","url":null,"abstract":"In scientific literature, there are some solutions that address the machine automatic of sign language contents. These solutions aim to reduce the communication and access to information barriers of deaf people in Information and Communication Technologies (ICTs). However, the most of these solutions do not explore syntactic and semantic aspects in the machine translation process, especially when they are designed to be general area. As a result, there is a limitation on the quality of the accessible generated contents, and a consequent resistance of deaf users for using these solutions. To reduce this problem, in this paper, we propose a solution that incorporates syntactic and semantic aspects in the translation of VLibras, a service of machine generation of Brazilian Sign Language (LIBRAS) content in for ICT (Digital TV, Web, Digital Cinema and mobile devices). This solution involves a formal rule description language modeled to create translation rules; the definition of a grammar exploiting these features; and their integration with the VLibras service. To evaluate the solution, some computational tests were performed using WER and BLEU metrics to assess the quality of the output generated by the solution. The results show that the proposed approach could improve the results of the current version of VLibras translator.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133177579","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}

{"title":"A New Approach to the Interpretation of Voice Commands","authors":"A. H. Kronbauer, Vinicius Costa","doi":"10.1145/2820426.2820431","DOIUrl":"https://doi.org/10.1145/2820426.2820431","url":null,"abstract":"The first 15 years of the twenty-first century are marked by the significant evolution of a new area known as Ubiquitous and Pervasive Computing. The introduced concepts are materializing in significant technological advances in different scenarios of humans' daily life, especially the so-called Ambient Intelligence (AmIs). In this context, one of the relevant research points is to enable human-computer interaction to become transparent and preserve the natural shape of existing communication between humans. Thus, this work contributes to the studies in this area, with the specification of a new model for voice interaction in AmI. To validate the proposed model, an infrastructure was built, based on the specified components. The potential of infrastructure and its possible large-scale adoption are evaluated by the execution of a preliminary experiment.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127053732","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}

{"title":"An Extensible Platform for the Transformation of Heterogeneous Data in Smart Cities","authors":"Cíicero Alves da Silva, G. D. A. Júnior","doi":"10.1145/2820426.2820433","DOIUrl":"https://doi.org/10.1145/2820426.2820433","url":null,"abstract":"The urban environment has a lot of devices that use different technologies, which makes the integration of data generated in them a difficult process due to their heterogeneity. However, it is important to manage these data in an integrated way, enabling the exchange of information between existing fields and assisting in the decision-making process. Moreover, there's no way to tell how this data will need to be processed since each application may require it to be available obeying specific processes. Thus, this paper describes the design and implementation of a platform that aims to integrate, process and make available data streams from heterogeneous sources. It also defines an extensible data processing flow, which makes the creation of new processes for existing data and the inclusion of new types of data easier. Finally, a case study was conducted, which used a parking lot as scenario and assessed some important aspects related to platform implementation.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125030009","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}

{"title":"Remote Home: A Universal Control for Residential Environments","authors":"A. H. Kronbauer, Fabio Fonseca Gomes, B. B. Araujo","doi":"10.1145/2820426.2820451","DOIUrl":"https://doi.org/10.1145/2820426.2820451","url":null,"abstract":"Currently, several advances are taking place in the area of residential environments, providing convenience and pleasure to different profiles of people. With the increased use of smartphones, people will be able to use them to control their existing home appliances. In this scenario, we propose a platform structured into three layers: (i) Interaction, using a mobile application with the function of a universal remote; (ii) Connectivity, middleware responsible for managing the communication between the Interaction Layer and the Actuator Layer; and (iii) Actuators, microprocessors connected to home appliances so that they can be controlled. Some tests were conducted to validate the platform and identify its potential. The preliminary results indicated that the platform functions properly and efficiently.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125402069","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}

{"title":"Recommending Web Service Based on Ontologies for Digital Repositories","authors":"Anderson Salles, Roberto Willrich","doi":"10.1145/2820426.2820432","DOIUrl":"https://doi.org/10.1145/2820426.2820432","url":null,"abstract":"Digital Repositories (DRs) offer functionalities for managing, storing and accessing digital contents. DRs may make available a wide range of content types, including theses, dissertations, papers, videos, works of art and literacy works. Some DRs have used recommendation systems to offer users suggestions about digital contents that they might be interested. In this paper, we propose a multi-domain Recommender Web Service supporting multiple types of recommendation audience. The flexibility of domain and audience is provided by the use of ontologies to represent domain-specific knowledge. In order to test the feasibility of our proposal, the paper presents two use cases of our Recommending Web Service.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114070368","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}

{"title":"Web of Things Gateway: a Performance Evaluation","authors":"Nailton Vieira de Andrade, Jeferson Lima de Almeida, Ramon Dias Costa, L. Andrade, George Pacheco Pinto, Cássio V. S. Prazeres","doi":"10.1145/2820426.2820440","DOIUrl":"https://doi.org/10.1145/2820426.2820440","url":null,"abstract":"The Web of Things is a proposal to make physical and connected devices available to be used as resources in the development of Web applications through the Web protocols and standards. On the one hand, the current Web has virtual content, which is accessed by client applications that are hosted on Web servers, but on the other hand, the physical devices are real objects that are geographically distributed and have several different ways of communication. As a result of these two before-mentioned characteristics, the physical devices would demand a larger number of Web servers. In this context, this work proposes that devices with limited memory capacity and processing power can be used as Web of Things gateways through Web protocols. Then, performance evaluation of such limited device is presented in this paper with two evaluation objectives: to evaluate the feasibility of a limited device as a Web of Things gateway; to establish the capacity of the gateway in management the access to the physical devices.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133533556","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}

{"title":"Brazil Around the World: Characterizing and Detecting Brazilian Emigrants Using Google+","authors":"Johnnatan Messias, Gabriel Magno, Fabrício Benevenuto, Adriano Veloso, Virgílio A. F. Almeida","doi":"10.1145/2820426.2820447","DOIUrl":"https://doi.org/10.1145/2820426.2820447","url":null,"abstract":"Currently available data about people whose left their home country to live in a foreign country does not adequately capture the standards of contemporary global migration flows. A new trend for migration studies is to study the data from the Internet, either by Social Networks or other data in the WEB. In this study, we collected users data from the social network Google+ to investigate which features of Brazilian users are relevant to classify them as a possible emigrant. Our study uses machine learning techniques, SVM. We selected some features to compose our dataset. Our results show that the network features were the ones that had greater capacity for discrimination. The most relevant for the prediction of Brazilian emigrants users are, in order: reciprocity, PageRank, in-degree, clustering coefficient and ratio of incoming foreigners.","PeriodicalId":224319,"journal":{"name":"Proceedings of the 21st Brazilian Symposium on Multimedia and the Web","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132334892","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}