5 research outputs found

    Scalable discovery of networked data : Algorithms, Infrastructure, Applications

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    Harmelen, F.A.H. van [Promotor]Siebes, R.M. [Copromotor

    Peer-to-peer, multi-agent interaction adapted to a web architecture

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    The Internet and Web have brought in a new era of information sharing and opened up countless opportunities for people to rethink and redefine communication. With the development of network-related technologies, a Client/Server architecture has become dominant in the application layer of the Internet. Nowadays network nodes are behind firewalls and Network Address Translations, and the centralised design of the Client/Server architecture limits communication between users on the client side. Achieving the conflicting goals of data privacy and data openness is difficult and in many cases the difficulty is compounded by the differing solutions adopted by different organisations and companies. Building a more decentralised or distributed environment for people to freely share their knowledge has become a pressing challenge and we need to understand how to adapt the pervasive Client/Server architecture to this more fluid environment. This thesis describes a novel framework by which network nodes or humans can interact and share knowledge with each other through formal service-choreography specifications in a decentralised manner. The platform allows peers to publish, discover and (un)subscribe to those specifications in the form of Interaction Models (IMs). Peer groups can be dynamically formed and disbanded based on the interaction logs of peers. IMs are published in HTML documents as normal Web pages indexable by search engines and associated with lightweight annotations which semantically enhance the embedded IM elements and at the same time make IM publications comply with the Linked Data principles. The execution of IMs is decentralised on each peer via conventional Web browsers, potentially giving the system access to a very large user community. In this thesis, after developing a proof-of-concept implementation, we carry out case studies of the resulting functionality and evaluate the implementation across several metrics. An increasing number of service providers have began to look for customers proactively, and we believe that in the near future we will not search for services but rather services will find us through our peer communities. Our approaches show how a peer-to-peer architecture for this purpose can be obtained on top of a conventional Client/Server Web infrastructure

    Enhancing Free-text Interactions in a Communication Skills Learning Environment

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    Learning environments frequently use gamification to enhance user interactions.Virtual characters with whom players engage in simulated conversations often employ prescripted dialogues; however, free user inputs enable deeper immersion and higher-order cognition. In our learning environment, experts developed a scripted scenario as a sequence of potential actions, and we explore possibilities for enhancing interactions by enabling users to type free inputs that are matched to the pre-scripted statements using Natural Language Processing techniques. In this paper, we introduce a clustering mechanism that provides recommendations for fine-tuning the pre-scripted answers in order to better match user inputs

    THE LIVED EXPERIENCES OF OPENLY GAY UNDERGRADUATE MEN INVOLVED IN ELECTED STUDENT GOVERNMENT: A PHENOMENOLOGICAL QUEERING

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    This is a study at the intersection of sexuality and student involvement in higher education. Exploring the lived experiences of openly gay undergraduate men involved in elected student government, this study enlists a phenomenological queering that unconceals and reveals that which is otherwise hidden in elected student leadership. Eight men were selected for participation in this study, and all identified as openly gay before and after their election to undergraduate student government. These men come from varying U.S. geographies and positions, and conversations and themes were rendered through the methodological approach of hermeneutic phenomenology. Four major themes came from multiple participant conversations and journals. First, these men understood coming out and being out as deeply related to visibility and their work as leaders. They are more than just gay, and at the same time, they just so happen to be gay. Additionally, participants displayed independent ways of being within their outness. For example, some represented a palatable kind of being gay, and some navigated deep religious dissonance and other tensions within the (queer) margins. Re(-)presentation was also a major theme, as participants were advocates for their peers, and were “called” to this work of leadership. Finally, these men were leaders through their identities, and engaged in undergraduate student government as something that was bigger than them, but better because of them. This includes their call to leadership and student government, the political nature of this work, and a desire for things to be better. From this study, insights were gleaned that capture the nuances of this intersection of sexuality and student involvement in higher education. Specifically, this study is a calling to better understand what it means to live and work alongside students who hold these dual identities (out and elected in student government, and within student affairs). This includes a queering of student government and phenomenology, as well as a queering of van Manen’s (1997) existentials of lived space (spatiality), lived body (corporeality), lived time (temporality), and lived relationship to others (sociality)
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