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Auflistung nach Schlagwort "trust"

1 - 10 von 17
  • Konferenzbeitrag
    An Anthropomorphic Approach to establish an Additional Layer of Trustworthiness of an AI Pilot
    (Software Engineering 2022 Workshops, 2022) Regli, Christoph; Annighoefer, Björn
    AI algorithms promise solutions for situations where conventional, rule-based algorithms reach their limits. They perform in complex problems yet unknown at design time, and highly efficient functions can be implemented without having to develop a precise algorithm for the problem at hand. Well-tried applications show the AI’s ability to learn from new data, extrapolate on unseen data, and adapt to a changing environment — a situation encountered in fl ight operations. In aviation, however, certifi cation regulations impede the implementation of non-deterministic or probabilistic algorithms that adapt their behaviour with increasing experience. Regulatory initiatives aim at defining new development standards in a bottom-up approach, where the suitability and the integrity of the training data shall be addressed during the development process, increasing trustworthiness in eff ect. Methods to establish explainability and traceability of decisions made by AI algorithms are still under development, intending to reach the required level of trustworthiness. This paper outlines an approach to an independent, anthropomorphic software assurance for AI/ML systems as an additional layer of trustworthiness, encompassing top-down black-box testing while relying on a well-established regulatory framework.
  • Konferenzbeitrag
    Applying assurance levels when issuing and verifying credentials using Trust Frameworks
    (Open Identity Summit 2021, 2021) Martinez Jurado, Victor; Vila, Xavier; Kubach, Michael; Henderson Johnson Jeyakumar, Isaac; Solana, Albert; Marangoni, Matteo
    Technical interoperability of the issuance, presentation, and verification of verifiable credentials (VC) across domains of trust is a current challenge for self-sovereign identity. We present an approach incorporating different levels of assurance and trust domains in an eIDAS compliant way. This is illustrated through a use case with real-world relevance: the issuance and cross-border usage of the European Health Insurance Card.
  • Konferenzbeitrag
    Breaking Barriers: Unveiling Trust Dynamics between Tangible and Graphical User Interfaces
    (Mensch und Computer 2024 - Workshopband, 2024) Jaros, Christian; Lau, Eric Hiu-Sing; Porzel, Robert; Döring, Tanja
    Technology continues to play a bigger role in everyday life. With emerging technologies (i.e., ChatGPT), people feel increasingly alienated by the complexity of such technologies. In this context, trust in new systems is not always given. By designing a tangible system, we address this issue and investigate whether users have more trust in a tangible user interface compared to a graphical user interface. Furthermore, we investigate whether the semantics of an interface (i.e. its appearance as a button or a padlock) impacts user trust. We conducted a user study in which participants were asked to interact with a simulated firewall software through different combinations of physicality and appearance of interfaces. Our results reveal a conditional effect of the interface physicality on user trust. Moreover, we found no evidence that the different appearances of the interface (button vs. key with lock) impact user trust.
  • Konferenzbeitrag
    The effects of consultant avatar size and dynamics on customer trust in online consultations
    (Mensch und Computer 2020 - Tagungsband, 2020) Brown, Gordon; Prilla, Michael
    This study investigates the impact of avatars on interactions between customers and consultants in remote, online consultations supported by Augmented Reality (AR). Based on past research, we were interested whether the appearance of an avatar and its dynamics affect important factors for online consultations such as social presence, trust in the consultant and perceived customer satisfaction. In particular, we chose avatar size and dynamics (movement/gaze) to compare different avatars in a 2x2 experiment, in which customers wear AR head mounted devices to consult a remotely located consultant in a mock furniture consultation session. Our results show no significant differences in trust and satisfaction, but significantly different levels of perceived social presence for life-sized, dynamic avatars as well as significantly higher co-presence for all life-sized avatars. Additional data from interviews with the participants revealed a clear preference for dynamic avatars over static ones. Based on an analysis of these findings, we make design recommendations and suggest directions for future research.
  • Textdokument
    Employees’ Adoption of Workplace Innovations
    (INFORMATIK 2017, 2017) Hausberg, Piet; Hülsdau, Marcus; Moysidou, Krystallia; Teuteberg, Frank
    In this study, we investigate the factors at employee level that influence the adoption of a customer-facing video conferencing software in an insurance company. Despite the associated benefit of significantly reduced driving times for the insurance agents, less than half of our sample finally adopted the software. We analyse the employees’ self-efficacy, intrinsic and extrinsic motivation, risk propensity as well as trust in superiors as factors influencing their adoption behaviour. Our findings indicate that risk propensity and trust in superiors influence the behaviour only insignificantly, whereas self-efficacy as well as intrinsic and extrinsic motivation have an impact on the adoption behaviour. Surprisingly though, the extrinsic motivation points into the opposite direction as hypothesised. Employees who score high on extrinsic motivation are less likely to adopt this workplace innovation.
  • Konferenzbeitrag
    Exploring explainability formats to aid decision-making in dairy farming systems
    (44. GIL - Jahrestagung, Biodiversität fördern durch digitale Landwirtschaft, 2024) Mengisti Berihu Girmay, Felix Möhrle
    In this paper, we examine different approaches to explaining decision support in herd management systems for their effects on comprehensibility and trust. To this end, we present a hypothetical system for assessing the risk of mastitis, a common infectious disease in dairy cattle. For this system, we design four explanation formats to present risk assessments to farmers. We collect their feedback in a survey to get suggestions for designing systems that are well accepted. In our work, it was not possible to identify one explanation format that is preferable to all others. Rather, a finding was that herd management systems should optimally support multiple explanation formats and allow switching between them depending on the situation.
  • Konferenzbeitrag
    The Impact of Explanation Detail in Advanced Driver Assistance Systems: User Experience, Acceptance, and Age-related Effects
    (Mensch und Computer 2023 - Tagungsband, 2023) Hermann, Julia; Nierobisch, Niels; Arndt, Robin; Kubullek, Ann-Kathrin; van Ledden, Sebastian; Dogangün, Aysegül
    User understanding and confidence are critical in the context of advanced intelligent driver assistance systems (ADAS) to ensure the desired response and prevent manual countersteering during automated maneuvers. However, the interventions of advanced ADAS can sometimes be unexpected and disruptive to drivers, especially when the reasons are unclear. In our study, we investigated the effects of differently presented explanations provided by a driver assistance system. We presented participants with three scenarios from the driver’s perspective and created two videos for each scenario with explanations of varying detail. Participants were asked to answer two questionnaires following each video. The results show that more detailed explanations generally lead to a better user experience and higher confidence in the system’s performance. We also discuss the possible influence of age and technology acceptance in our article.
  • Textdokument
    Let’s Revoke! Mitigating Revocation Equivocation by re-purposing the Certificate Transparency Log
    (Open Identity Summit 2019, 2019) Mueller, Tobias; Stübs, Marius; Federrath, Hannes
    Distributing cryptographic keys and asserting their validity is a challenge for any system relying on such keys, for example the World Wide Web with HTTPS or OpenPGP encrypted email. When keys get stolen or compromised, it is desirable to shorten the time during which an attacker can decrypt or sign messages. This is usually achieved by revoking the affected certificates. We investigate the security requirements for distributing key revocations in the context of asynchronous decentralised messaging and analyse the status quo with respect to these requirements. We show that equivocation, integrity protection, and non-repudiation pose a challenge in today’s revocation distribution infrastructure. We find that a publicly verifiable append-only data structure serves our purpose and notice that operating such an infrastructure is expensive. We propose a revocation distribution scheme that fulfils our requirements. Our scheme uses the already existing Certificate Transparency (CT) logs of the WebPKI as a publicly verifiable append-only data structure for storing revocations through specially crafted TLS certificates. The security of our system largely stems from the properties of these CT logs. Additionally, we analyse the computational and bandwidth requirements of our scheme and show limitations of the protocol we propose.
  • Konferenzbeitrag
    A lightweight trust management infrastructure for self-sovereign identity
    (Open Identity Summit 2021, 2021) Kubach, Michael; Roßnagel, Heiko
    Decentralized approaches towards digital identity management, often summarized under the currently popular term Self-sovereign identity (SSI) are being associated with high hopes for a bright future of identity management (IdM). Numerous private, open source as well as publicly funded research initiatives pursue this approach with the aim to finally bring universally usable, trustworthy, interoperable, secure, and privacy friendly digital identities for everyone and all use cases. However, a major challenge that so far has been only rudimentary addressed, is the trust management in these decentralized identity ecosystems. This paper first elaborates this problem before presenting an approach for a trust management infrastructure in SSI ecosystems that is based on already completed work for trust management in digital transactions.
  • Konferenzbeitrag
    On the Market for Self-Sovereign Identity: Structure and Stakeholders
    (Open Identity Summit 2021, 2021) Kubach, Michael; Sellung, Rachelle
    For SSI solutions to make a significant impact, they need to be designed to cater to the requirements of the market to be adopted. Therefore, this paper proposes a structure of the market for SSI solutions, analyses its stakeholders, and surveys its current state.