Estimation of the QoE for video streaming services based on facial expressions and gaze direction

As the multimedia technologies evolve, the need to control their quality becomes even more important making the Quality of Experience (QoE) measurements a key priority. Machine Learning (ML) can support this task providing models to analyse the information extracted by the multimedia. It is possible to divide the ML models applications in the following categories: 1) QoE modelling: ML is used to define QoE models which provide an output (e.g., perceived QoE score) for any given input (e.g., QoE influence factor). 2) QoE monitoring in case of encrypted traffic: ML is used to analyze passive traffic monitored data to obtain insight into degradations perceived by end-users. 3) Big data analytics: ML is used for the extraction of meaningful and useful information from the collected data, which can further be converted to actionable knowledge and utilized in managing QoE. The QoE estimation quality task can be carried out by using two approaches: the objective approach and subjective one. As the two names highlight, they are referred to the pieces of information that the model analyses. The objective approach analyses the objective features extracted by the network connection and by the used media. As objective parameters, the state-of-the-art shows different approaches that use also the features extracted by human behaviour. The subjective approach instead, comes as a result of the rating approach, where the participants were asked to rate the perceived quality using different scales. This approach had the problem of being a time-consuming approach and for this reason not all the users agree to compile the questionnaire. Thus the direct evolution of this approach is the ML model adoption. A model can substitute the questionnaire and evaluate the QoE, depending on the data that analyses. By modelling the human response to the perceived quality on multimedia, QoE researchers found that the parameters extracted from the users could be different, like Electroencephalogram (EEG), Electrocardiogram (ECG), waves of the brain. The main problem with these techniques is the hardware. In fact, the user must wear electrodes in case of ECG and EEG, and also if the obtained results from these methods are relevant, their usage in a real context could be not feasible. For this reason, my studies have been focused on the developing of a Machine Learning framework completely unobtrusively based on the Facial reactions

Libro de aplicaciones y usabilidad de la televisión digital interactiva : VIII Conferencia Iberoamericana de Aplicaciones t Usabilidad de la TV Interactiva (jAUTI 2019)

Las jAUTI2019 VIII Jornadas Iberoamericanas sobre Aplicaciones y Usabilidad de la Televisión Digital Interactiva, se realizaron durante WebMedia 2019 XXV Simpósio Brasilero de Sistemas Multimedia y Web , del 29 de Octubre al 1 de Noviembre en Río de Janeiro (Brasil). jAUTI2019 es la octava edición de un evento científico organizado anualmente por la RedAUTI Red Temática de Aplicaciones y Usabilidad de la Televisión Digital Interactiva, formada por más de 250 investigadores pertenecientes a 32 universidades de España, Portugal y once países latinoamericanos (Argentina, Brasil, Colombia, Costa Rica, Cuba, Chile, Ecuador, Guatemala, Perú, Uruguay, Venezuela). Este libro reúne los trabajos aceptados en el evento el cual tiene como objetivo presentar los esfuerzos de investigación de la academia, la industria o las agencias gubernamentales en el diseño, desarrollo y usabilidad de aplicaciones para la Televisión Digital Interactiva (TVDi) y tecnologías relacionadas.A jAUTI 2019 - VIII Conferência Ibero-Americana de Aplicações e Usabilidade da Televisão Digital Interativa, foi realizada durante o WebMedia 2019 - XXV Simpósio Brasileiro de Multimídia e Sistemas Web, de 29 de outubro à 1 de novembro no Rio de Janeiro (Brasil). O jAUTI 2019 é a oitava edição de um evento científico organizado anualmente pela Rede Temática de Aplicações e Usabilidade da Televisão Digital Interativa (RedAUTI), formada por mais de 250 pesquisadores de 32 universidades de Espanha, Portugal e onze países da América Latina (Argentina, Brasil, Colômbia, Costa Rica, Cuba, Chile, Equador, Guatemala, Peru, Uruguai, Venezuela). Este livro reúne os trabalhos aceitos no evento, que visa apresentar os esforços de pesquisa da academia, da indústria ou de agências governamentais no projeto, desenvolvimento e usabilidade de aplicativos para Televisão Digital Interativa (TVDi) e tecnologias relacionadas.The jAUTI 2019 VIII Ibero-American Conference on Applications and Usability of Interactive Digital Television, were held during WebMedia 2019 XXV Brazilian Symposium on Multimedia and Web Systems, from October 29 to November 1 in Rio de Janeiro (Brazil). jAUTI 2019 is the eighth edition of a scientific event organized annually by the RedAUTI Thematic Network of Applications and Usability of Interactive Digital Television, formed by more than 250 researchers from 32 universities in Spain, Portugal and eleven Latin American countries (Argentina, Brazil, Colombia, Costa Rica, Cuba, Chile, Ecuador, Guatemala, Peru, Uruguay, Venezuela). This book gathers the works accepted in the event which aims to present the research efforts of the academy, industry or government agencies in the design, development and usability of applications for Interactive Digital Television (TVDi) and related technologies.RedAUT

Libro de aplicaciones y usabilidad de la televisión digital interactiva : VIII Conferencia Iberoamericana de Aplicaciones t Usabilidad de la TV Interactiva (jAUTI 2019)

Las jAUTI2019 VIII Jornadas Iberoamericanas sobre Aplicaciones y Usabilidad de la Televisión Digital Interactiva, se realizaron durante WebMedia 2019 XXV Simpósio Brasilero de Sistemas Multimedia y Web , del 29 de Octubre al 1 de Noviembre en Río de Janeiro (Brasil). jAUTI2019 es la octava edición de un evento científico organizado anualmente por la RedAUTI Red Temática de Aplicaciones y Usabilidad de la Televisión Digital Interactiva, formada por más de 250 investigadores pertenecientes a 32 universidades de España, Portugal y once países latinoamericanos (Argentina, Brasil, Colombia, Costa Rica, Cuba, Chile, Ecuador, Guatemala, Perú, Uruguay, Venezuela). Este libro reúne los trabajos aceptados en el evento el cual tiene como objetivo presentar los esfuerzos de investigación de la academia, la industria o las agencias gubernamentales en el diseño, desarrollo y usabilidad de aplicaciones para la Televisión Digital Interactiva (TVDi) y tecnologías relacionadas.A jAUTI 2019 - VIII Conferência Ibero-Americana de Aplicações e Usabilidade da Televisão Digital Interativa, foi realizada durante o WebMedia 2019 - XXV Simpósio Brasileiro de Multimídia e Sistemas Web, de 29 de outubro à 1 de novembro no Rio de Janeiro (Brasil). O jAUTI 2019 é a oitava edição de um evento científico organizado anualmente pela Rede Temática de Aplicações e Usabilidade da Televisão Digital Interativa (RedAUTI), formada por mais de 250 pesquisadores de 32 universidades de Espanha, Portugal e onze países da América Latina (Argentina, Brasil, Colômbia, Costa Rica, Cuba, Chile, Equador, Guatemala, Peru, Uruguai, Venezuela). Este livro reúne os trabalhos aceitos no evento, que visa apresentar os esforços de pesquisa da academia, da indústria ou de agências governamentais no projeto, desenvolvimento e usabilidade de aplicativos para Televisão Digital Interativa (TVDi) e tecnologias relacionadas.The jAUTI 2019 VIII Ibero-American Conference on Applications and Usability of Interactive Digital Television, were held during WebMedia 2019 XXV Brazilian Symposium on Multimedia and Web Systems, from October 29 to November 1 in Rio de Janeiro (Brazil). jAUTI 2019 is the eighth edition of a scientific event organized annually by the RedAUTI Thematic Network of Applications and Usability of Interactive Digital Television, formed by more than 250 researchers from 32 universities in Spain, Portugal and eleven Latin American countries (Argentina, Brazil, Colombia, Costa Rica, Cuba, Chile, Ecuador, Guatemala, Peru, Uruguay, Venezuela). This book gathers the works accepted in the event which aims to present the research efforts of the academy, industry or government agencies in the design, development and usability of applications for Interactive Digital Television (TVDi) and related technologies.RedAUT

Libro de aplicaciones y usabilidad de la televisión digital interactiva : VIII Conferencia Iberoamericana de Aplicaciones t Usabilidad de la TV Interactiva (jAUTI 2019)

Las jAUTI2019 VIII Jornadas Iberoamericanas sobre Aplicaciones y Usabilidad de la Televisión Digital Interactiva, se realizaron durante WebMedia 2019 XXV Simpósio Brasilero de Sistemas Multimedia y Web , del 29 de Octubre al 1 de Noviembre en Río de Janeiro (Brasil). jAUTI2019 es la octava edición de un evento científico organizado anualmente por la RedAUTI Red Temática de Aplicaciones y Usabilidad de la Televisión Digital Interactiva, formada por más de 250 investigadores pertenecientes a 32 universidades de España, Portugal y once países latinoamericanos (Argentina, Brasil, Colombia, Costa Rica, Cuba, Chile, Ecuador, Guatemala, Perú, Uruguay, Venezuela). Este libro reúne los trabajos aceptados en el evento el cual tiene como objetivo presentar los esfuerzos de investigación de la academia, la industria o las agencias gubernamentales en el diseño, desarrollo y usabilidad de aplicaciones para la Televisión Digital Interactiva (TVDi) y tecnologías relacionadas.A jAUTI 2019 - VIII Conferência Ibero-Americana de Aplicações e Usabilidade da Televisão Digital Interativa, foi realizada durante o WebMedia 2019 - XXV Simpósio Brasileiro de Multimídia e Sistemas Web, de 29 de outubro à 1 de novembro no Rio de Janeiro (Brasil). O jAUTI 2019 é a oitava edição de um evento científico organizado anualmente pela Rede Temática de Aplicações e Usabilidade da Televisão Digital Interativa (RedAUTI), formada por mais de 250 pesquisadores de 32 universidades de Espanha, Portugal e onze países da América Latina (Argentina, Brasil, Colômbia, Costa Rica, Cuba, Chile, Equador, Guatemala, Peru, Uruguai, Venezuela). Este livro reúne os trabalhos aceitos no evento, que visa apresentar os esforços de pesquisa da academia, da indústria ou de agências governamentais no projeto, desenvolvimento e usabilidade de aplicativos para Televisão Digital Interativa (TVDi) e tecnologias relacionadas.The jAUTI 2019 VIII Ibero-American Conference on Applications and Usability of Interactive Digital Television, were held during WebMedia 2019 XXV Brazilian Symposium on Multimedia and Web Systems, from October 29 to November 1 in Rio de Janeiro (Brazil). jAUTI 2019 is the eighth edition of a scientific event organized annually by the RedAUTI Thematic Network of Applications and Usability of Interactive Digital Television, formed by more than 250 researchers from 32 universities in Spain, Portugal and eleven Latin American countries (Argentina, Brazil, Colombia, Costa Rica, Cuba, Chile, Ecuador, Guatemala, Peru, Uruguay, Venezuela). This book gathers the works accepted in the event which aims to present the research efforts of the academy, industry or government agencies in the design, development and usability of applications for Interactive Digital Television (TVDi) and related technologies.RedAUT

A Framework for Exploiting Internet of Things for Context-Aware Trust-based Personalized Services

In the last years, we have witnessed the introduction of Internet of Things as an integral part of the Internet with billions of interconnected and addressable everyday objects. On the one hand, these objects generate massive volume of data that can be exploited to gain useful insights into our day-to-day needs. On the other hand, context-aware recommender systems (CARSs) are intelligent systems that assist users to make service consumption choices that satisfy their preferences based on their contextual situations. However, one of the major challenges in developing CARSs is the lack of functionality providing dynamic and reliable context information required by the recommendation decision process based on the objects that users interact with in their environments. Thus, contextual information obtained from IoT objects and other sources can be exploited to build CARSs that satisfy users’ preferences, improve quality of experience and recommendation accuracy. This article describes various components of a conceptual IoT based framework for context-aware personalized recommendations. The framework addresses the weakness whereby CARSs rely on static and limited contextual information from user’s mobile phone, by providing additional components for reliable and dynamic contextual information, using IoT context sources. The core of the framework consists of context recognition and reasoning management, dynamic user profile model incorporating trust to improve accuracy of context-aware personalized recommendations. Experimental evaluations show that incorporating context and trust in personalized recommendations can improve its accuracy

The Internet of Things

The Internet of Things (IoT) is the next evolution in Internet technology—creating a more dynamic and integrated entity that connects virtual and physical worlds in highly unified and increasingly useful ways. The IoT takes advantage of radio-frequency identification (RFID) and sensor technology to integrate extensively with our physical environment. The world is currently poised to experience widespread use of this potentially disruptive technology which employs radio tags to uniquely identify and create computerized inventories of all objects and persons. With the information that the IoT makes available on real-world objects, the world will become even more highly connected than it already is by connecting and facilitating human-to-human (H2H), human-to-thing (H2T), and thing-to-thing (T2T)--also referred to as machine-to-machine (M2M)—interactions. The purpose of this research project is to conduct a review of the IoT as it pertains to individuals and businesses, and to perform an exploratory study that focuses on individual perceptions and level of awareness relating to this technological revolution. The project’s scope includes 1) a thorough literature review to define the IoT as it is currently understood and to discuss its potential as a disruptive technology with societal implications, and 2) a discussion of information ethics as it pertains to innovative and disruptive technologies. The latter part of the project presents and discusses the results of a survey of college students designed to explore their perceptions of the IoT with regards to the constructs of convenience, privacy, security, and trust surrounding this new technology. College students were selected as the focus of the survey as they will directly experience this technological revolution in full force as it continues to rapidly develop while today’s students begin to take on greater responsibility as tomorrow’s leaders in business and society