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Auflistung nach Autor:in "Schultz, Carsten"

1 - 3 von 3
  • Konferenzbeitrag
    Inductive Learning of Concept Representations from Library-Scale Bibliographic Corpora
    (INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik – Informatik für Gesellschaft, 2019) Galke, Lukas; Melnychuk, Tetyana; Seidlmayer, Eva; Trog, Steffen; Förstner, Konrad U.; Schultz, Carsten; Tochtermann, Klaus
    Automated research analyses are becoming more and more important as the volume of research items grows at an increasing pace. We pursue a new direction for the analysis of research dynamics with graph neural networks. So far, graph neural networks have only been applied to small-scale datasets and primarily supervised tasks such as node classification. We propose to use an unsupervised training objective for concept representation learning that is tailored towards bibliographic data with millions of research papers and thousands of concepts from a controlled vocabulary. We have evaluated the learned representations in clustering and classification downstream tasks. Furthermore, we have conducted nearest concept queries in the representation space. Our results show that the representations learned by graph convolution with our training objective are comparable to the ones learned by the DeepWalk algorithm. Our findings suggest that concept embeddings can be solely derived from the text of associated documents without using a lookup-table embedding. Thus, graph neural networks can operate on arbitrary document collections without re-training. This property makes graph neural networks useful for the analysis of research dynamics, which is often conducted on time-based snapshots of bibliographic data.
  • Konferenzbeitrag
    The role of community governance and interaction quality in patient organizations for rare chronic diseases
    (INFORMATIK 2011 – Informatik schafft Communities, 2011) Schröder, Annika; Hölzle, Katharina; Schultz, Carsten
    An extensive body of literature indicates the growing influence of virtual communities on various aspects of people's life - from spending their free time, engaging in social interaction, to working. In recent years, companies engage in virtual and non-virtual interaction with their customers as part of their open innovation strategies. In doing so, they intent exchange information on products and development of innovative ideas. However, this kind of collaboration is not yet fully embraced by companies and still poses some organizational and individual challenges to companies. Especially in non-software industries as the health care sector of rare and chronic diseases where people are emotionally highly involved while bearing a great expertise, collaboration potential is not yet fully leveraged. This contribution explores two concepts drawn from current knowledge on virtual communities to be mainly responsible for a successful collaboration, namely the community governance as relevant organizational dimension and the interaction quality as paramount construct of collaboration. By reporting on preliminary results (due in October 2011) from a German-based study of anticipated 51 patient organizations of rare and chronic diseases, we aim to discover how patient organizations govern themselves, how interaction is facilitated among members and what performance regarding innovative ideas can be expected. This will lead to advice for companies as how to design their collaboration with patient organizations.
  • Zeitschriftenartikel
    Vertrauensbasierte Organisationen als Grundlage von erfolgreichen digitalen Plattformen für personennahe Dienstleistungen
    (HMD Praxis der Wirtschaftsinformatik: Vol. 57, No. 4, 2020) Schultz, Carsten; Hoffmann, Stefan; Ferdinand, Manuela
    Immer mehr Unternehmen entschließen sich dazu, ihr Geschäftsmodell digital auszuweiten. Dieser Trend ist auch im Bereich der personennahen Dienstleistungen spürbar. Um Zugriff auf die digitalen Serviceangebote zu erhalten, müssen potentielle Nutzer persönliche Daten preisgeben. In vielen Fällen führt dies zu Bedenken und stellt somit ein gravierendes Hindernis für den Erfolg der Plattformen dar. Vorliegende Studie erklärt Vertrauen als entscheidenden Faktor für den Erfolg digitaler Plattformstrategien für personennahe Dienstleistungen. Es werden Unterschiede zwischen gewinnorientierten und gemeinwohlorientierten Organisationen aufgezeigt und verdeutlicht, inwieweit eine strategische Nutzerintegration, also der Einbezug von Nutzern in den Entwicklungsprozess der Plattform und eine operative Nutzerintegration, bei der sich die Nutzer mit eigenen Ideen und Wünschen in den laufenden Betrieb der Plattform einbringen können, Einfluss auf Vertrauen und Nutzungsintention potentieller Anwender haben. Hierzu wurde ein drei-faktorielles Online-Experiment mit den Faktoren Organisationsform, strategische Nutzerintegration und operative Nutzerintegration in einem Between-Subjects-Design durchgeführt. Es hat sich bestätigt, dass Vertrauen entscheidende Größe für die Nutzungsintention ist. Zudem hat sich herausgestellt, dass Vertrauen den Einfluss von Organisationsform und operativer Nutzerintegration auf die Nutzungsintention mediiert. Die Ergebnisse der Studie richten sich vorrangig an Unternehmen, die sich mit der Entwicklung und Vermarktung von Plattformstrategien für personennahe Dienstleistungen beschäftigen. Solche Unternehmen erhalten hier erste wichtige Hinweise dazu, wie sie, je nach ihrer Organisationsform, diese Strategien erfolgreich umsetzen können, um so eine kritische Masse an Anwendern ihrer Plattform zu erreichen. More and more companies are deciding to digitally expand their business model. This trend is also noticeable in the area of personal services. In order to gain access to the digital service offerings, potential users must disclose personal data. In many cases, this raises concerns and therefore represents a serious obstacle to the success of the platforms. This study explains trust as a decisive factor for the success of digital platform strategies for personal services. Differences between profit-oriented and non-profit organizations are shown and it is clarified to what extent a strategic user integration, i.e. the inclusion of users in the development process of the platform and an operational user integration, in which the users can contribute their own ideas and wishes to the ongoing operation of the platform, have an impact on the trust and intended use of potential users. For this purpose, a three-factor online experiment was carried out with the factors organizational form, strategic user integration and operational user integration in a between-subject design. It has been confirmed that trust is a decisive factor for the intended use. It has also been shown that trust mediates the influence of organizational form and operational user integration on the intended use. The results of the study are primarily aimed at companies that are involved in the development and marketing of platform strategies for personal services. Such companies receive initial important information on how, depending on their organizational form, they can successfully implement these strategies in order to reach a critical mass of users of their platform.