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Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web最新文献

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A Hybrid Approach to Recommend Long Tail Items 推荐长尾项目的混合方法
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/webmedia.2018.4550
D. V. D. S. Silva, F. Durão
{"title":"A Hybrid Approach to Recommend Long Tail Items","authors":"D. V. D. S. Silva, F. Durão","doi":"10.5753/webmedia.2018.4550","DOIUrl":"https://doi.org/10.5753/webmedia.2018.4550","url":null,"abstract":"Techniques in recommendation systems generally focuses on recommending the most important items for a user. The purpose of this work is to generate recommendations focusing on long tail items, and then to conduct the user to less popular items. However, such items are of great relevance to the user. Two techniques from the literature were applied in this study in a hybrid way. The first technique is through markov chains to calculate node similarity of a user item graph. The second technique applies clustering, where items are separated into distinct clusters: popular items (short tail) and non-popular items (long tail). Using the Movielens 100k database, we conducted an experiment to calculate the accuracy, diversity, and popularity of the recommended items. With our hybrid approach we were able to improve the recall by up to 27.97 % when compared to the markov chain-based algorithm, which indicates greater targeting to long tail products. At the same time the recommended items were more diversified and less popular, which indicates greater targeting to long tail products.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124593913","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
Assessment of the Treatment of Grammatical Aspects of Machine Translators to Libras 机器翻译对图书馆语法处理的评价
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/WEBMEDIA.2018.4570
Luana Silva Reis, T. Araújo, Y. P. Aguiar, M. A. C. B. Lima, Angelina Sales
{"title":"Assessment of the Treatment of Grammatical Aspects of Machine Translators to Libras","authors":"Luana Silva Reis, T. Araújo, Y. P. Aguiar, M. A. C. B. Lima, Angelina Sales","doi":"10.5753/WEBMEDIA.2018.4570","DOIUrl":"https://doi.org/10.5753/WEBMEDIA.2018.4570","url":null,"abstract":"Currently, a set of technologies has been developed with the aim of reducing barriers to access to information for deaf people, such as machine tools for sign languages. However, these technologies have some limitations related to the difficult of handling some specific grammatical aspects of the sign languages, which can make the translations less fluent, and influence the deaf users experience. To address this problem, this study analyzes the machine translation of contents from Brazilian Portuguese (Pt-br) into Brazilian Sign Language (Libras) performed by three machine translators: ProDeaf, HandTalk and VLibras. More specifically, we performed an experiment with some Brazilian human interpreters that evaluate the treatment of some specific grammatical aspects in these three applications. As a result, we observed a significant weakness in the evaluation regarding the adequacy treatment of homonymous words, denial adverbs and directional verbs in the translations performed by the applications, which indicates the need for these tools to improve in the treatment of these grammatical aspects.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125738769","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
Recuperação de Imagens na Web com Fusão Adaptativa de Credibilidade Baseada em Algoritmos Genéticos 基于遗传算法的自适应可信融合Web图像检索
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/WEBMEDIA.2018.4563
W. D. Silva, R. T. Calumby
{"title":"Recuperação de Imagens na Web com Fusão Adaptativa de Credibilidade Baseada em Algoritmos Genéticos","authors":"W. D. Silva, R. T. Calumby","doi":"10.5753/WEBMEDIA.2018.4563","DOIUrl":"https://doi.org/10.5753/WEBMEDIA.2018.4563","url":null,"abstract":"Credibility information gives an indication of which users are most likely to share relevant images on social network feeds and consequently may help estimating the relevance of an image for retrieval purposes. Considering multiple credibilty evidences has be shown as an effective method for image ranking. In order to select and combine multiple credibility descriptors, this work proposes a genetic algorithm-based automatic context-adaptive weight adjustment model. The experimental results show promising effectiveness when compared to the baseline.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134208667","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
Improving the Spatial Keyword Preference Query with Linked Open Data 基于链接开放数据的空间关键字偏好查询改进
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/WEBMEDIA.2018.4551
João Paulo Dias de Almeida, F. Durão
{"title":"Improving the Spatial Keyword Preference Query with Linked Open Data","authors":"João Paulo Dias de Almeida, F. Durão","doi":"10.5753/WEBMEDIA.2018.4551","DOIUrl":"https://doi.org/10.5753/WEBMEDIA.2018.4551","url":null,"abstract":"This paper presents a Spatial Keyword Preference Query (SKPQ) enhanced by Linked Open Data. This query selects objects based on the textual description of features in their neighborhood. The spatial relationship between objects and features is explored by the SKPQ using a Spatial Inverted Index. In our approach, the spatial relationship is explored using SPARQL. However, the main benefit of using SPARQL is obtained by measuring the textual relevance between features’ description and user’s keywords. The object description in Linked Open Data is much richer than traditional spatial databases, which leads to a more precise similarity measure than the one employed in the traditional SKPQ. We present an enhanced SKPQ and two experimental evaluations of the proposed approach, comparing it with the traditional SKPQ. The first conducted experiment indicate a relative NDCG improvement of the proposed approach over the traditional SKPQ of 20% when using random query keywords. The second experiment shows that using real query keywords, our approach obtained a significant increase in the MAP score.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"os-35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127868500","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
VideoViz - Uma proposta de ferramenta de visualização de logs de interação em players de vídeo VideoViz -一个用于查看视频播放器交互日志的工具
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/WEBMEDIA.2018.4599
André Luiz de B. Damasceno, Á. L. Guedes, Sérgio Colcher, Simone D. J. Barbosa, Dilson J.L. Rabêlo, E. B. Monier
{"title":"VideoViz - Uma proposta de ferramenta de visualização de logs de interação em players de vídeo","authors":"André Luiz de B. Damasceno, Á. L. Guedes, Sérgio Colcher, Simone D. J. Barbosa, Dilson J.L. Rabêlo, E. B. Monier","doi":"10.5753/WEBMEDIA.2018.4599","DOIUrl":"https://doi.org/10.5753/WEBMEDIA.2018.4599","url":null,"abstract":"The usage of technologies for content authoring, storage, distribution and presentation supported the arise of Virtual Learning Environments (VLEs) such as Moodle and MOOCs (e.g., Udacity, Coursera, EdX). All students’ interaction in these environments can be stored in logs. For instance, video is one of the resources has a greater focus on VLEs. In this paper, we present a state-of-the-art overview of interaction analysis on video players. We noticed that teachers would like to know how and when students interact with videos. In order to fill this gap, we propose VideoViz, a tool to analyse logs from interaction on video players.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121182816","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
OpenData Processor: An Automation tool for the process of extracting and publishing open data to CKAN OpenData处理器:一个自动化工具，用于提取和发布开放数据到CKAN
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/WEBMEDIA.2018.4576
Allyson Vilela, A. Almeida, Frederico Lopes
{"title":"OpenData Processor: An Automation tool for the process of extracting and publishing open data to CKAN","authors":"Allyson Vilela, A. Almeida, Frederico Lopes","doi":"10.5753/WEBMEDIA.2018.4576","DOIUrl":"https://doi.org/10.5753/WEBMEDIA.2018.4576","url":null,"abstract":"Public access to government information is an important aspect of modern society that allows an active participation of the population in monitoring government actions. Decree No. 8.777, signed on May 11, 2016, establishes the Open Data Policy of the Brazilian Federal Government. From this, the entities of the federal public administration, autarchic and foundational are obliged to make data available in open format. However, many of these institutions are failing to meet the commitments set out in the Decree. One possible explanation for this low number is the need for the technical team to have a good knowledge of their information systems and current legislation, allied to the difficulty of extracting the data, since in most institutions the whole process of data extraction, processing and publication of open data is done manually. In this sense, this work presents the OpenData Processor, an automation tool for the process of extracting, publishing and updating open data that brings agility in the publication and periodical updating, saving time and facilitating the management of open data portals.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127351720","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
Design audiovisual para experiência compartilhada: uma experiência de sincronização de conteúdo e interação aplicada à educação 共享体验的视听设计:应用于教育的内容同步与互动体验
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/WEBMEDIA.2018.4593
R. M. Toscano, Durval Leal Filho, M. C. Teixeira, Sandro Gonçalves, Helder Bruno A. M. de Souza, Valdecir Becker
{"title":"Design audiovisual para experiência compartilhada: uma experiência de sincronização de conteúdo e interação aplicada à educação","authors":"R. M. Toscano, Durval Leal Filho, M. C. Teixeira, Sandro Gonçalves, Helder Bruno A. M. de Souza, Valdecir Becker","doi":"10.5753/WEBMEDIA.2018.4593","DOIUrl":"https://doi.org/10.5753/WEBMEDIA.2018.4593","url":null,"abstract":"The development of audiovisual content has become an increasingly complex activity. In view of this scenario arises the Architecture of Audiovisual Design (AD) as a theoretical-methodological instrument of analysis and creation of systems. The purpose of this article is to describe the process of building the multi-screen audiovisual system Caatinga Viva from AD. To achieve this goal, a partnership was established between Para’iwa and the Audiovisual Design Research Group to create an experiment in education. The construction of the system revealed that the elements available in the DA as Design Lines, roles and triggers are potential elements to create multi-screen systems.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128208164","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
Levantamento de Tecnologias para ONGs de Proteção Animal para apoio ao resgate de animais domésticos acoplados ao ciclo de vida de um sistema Web 动物保护非政府组织的技术调查，以支持与网络系统生命周期相结合的家畜救援
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/webmedia.2018.4574
Tatiana Tozzi, Daniel Fernando Anderle, R. Nogueira
{"title":"Levantamento de Tecnologias para ONGs de Proteção Animal para apoio ao resgate de animais domésticos acoplados ao ciclo de vida de um sistema Web","authors":"Tatiana Tozzi, Daniel Fernando Anderle, R. Nogueira","doi":"10.5753/webmedia.2018.4574","DOIUrl":"https://doi.org/10.5753/webmedia.2018.4574","url":null,"abstract":"This paper reports on the stages of identification of existing technologies that can be used to identify and rescue lost animals and to disseminate animals for adoption by NGOs of Animal Protection, Zoonoses Center and Protective Guards. In this article the developed phases of the Course Completion Work are presented. For this, an exploratory research was carried out initially, followed by a questionnaire seeking to identify which technologies are used to identify, locate, rescue and adopt domestic animals. The current technologies found were Microchip - RFID, Microchip - NFC, Collar with qrCode, Collar with Tag, Search application, Identification application, Social networks. In this way the research reports the main technologies used to date and is going to develop an application proposal to improve and expand the dissemination of pets that are lost or for adoption.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130421114","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
Um Modelo de Predição para o Sucesso no Mercado Musical 音乐市场成功的预测模型
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/webmedia.2018.4559
Carlos Vicente Soares Araújo, Rafael Giusti, Marco Cristo
{"title":"Um Modelo de Predição para o Sucesso no Mercado Musical","authors":"Carlos Vicente Soares Araújo, Rafael Giusti, Marco Cristo","doi":"10.5753/webmedia.2018.4559","DOIUrl":"https://doi.org/10.5753/webmedia.2018.4559","url":null,"abstract":"In this paper we present an ongoing research that aims to produce a model to predict success in the musical market. To reach this goal, it is necessary, initially, to identify infl uence factors in the market, which is the current focus of this research. In this branch, we identify that tweets have infl uence over the popularity of an album in Spotify. We also found out that Pop has more tendency to have the most popular song of a year, among other analyses. The next steps of this research are to list even more infl uence factors, generate the model using artifi cial neural networks and validate it with real-world cases.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117095828","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
VolleyJump: Uma aplicação para a análise de saltos no voleibol de praia 排球跳跃:沙滩排球跳跃分析的应用
Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web Pub Date : 2018-10-16 DOI: 10.5753/WEBMEDIA.2018.4579
R. Bandeira, Fernando A. M. Trinta, J. Gomes, M. Maia, Alexandre Araripe
{"title":"VolleyJump: Uma aplicação para a análise de saltos no voleibol de praia","authors":"R. Bandeira, Fernando A. M. Trinta, J. Gomes, M. Maia, Alexandre Araripe","doi":"10.5753/WEBMEDIA.2018.4579","DOIUrl":"https://doi.org/10.5753/WEBMEDIA.2018.4579","url":null,"abstract":"Professional sports are increasingly dependents of technological resources given the remarkable level of competitiveness faced by high performance athletes. With such resources, it is possible to analyze matches, avoid mistakes that may be committed by the referee or even to analyze the athletes’ performance. One of these sports is beach volleyball, one of most popular sports in Brazil. In the past 12 years, the Brazilian volleyball teams has been always among the best teams in the world. The athletes’ performance during the jump movement is one of the main factors that one team needs to improve to be successful because it is the movement that is most performed during a volleyball match. There are some approaches that study the jump movement in order to calculate its height and give evidences to improve it. Nevertheless, these solutions are expensive and are not viable to athletes with no sponsorship. Having this in mind, this works presents VolleyJump, an application created to analyze beach volleyball athlete jumps using machine learning strategies to calculate the jump height and classify it as an attack or block jump. Results show that VolleyIoT makes possible to analyze athletes’ jumps using mobile devices sensors, helping them to focus on their trainning to improve its technique.","PeriodicalId":314723,"journal":{"name":"Anais Estendidos do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128346029","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
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