4,366 research outputs found
The Effect of Recommender Systems on Users’ Situation Awareness and Actions
Many organizations are implementing recommender systems with the expectation to influence users’ actions. However, research has shown that poorly designed recommender systems may be counterproductive. For instance, if a recommender system provides too many recommendations, users cannot focus on relevant recommendations anymore. To tackle this challenge, recommender systems need to be balanced and adjusted to the processes in which they shall support users. Only designed correctly, recommender systems may influence users’ situation awareness and, ultimately, enable them to perform informed actions. Research has shown that users’ situation awareness depends on users’ elaboration. Therefore, we draw on the Elaboration Likelihood Model to conceptualize recommendation velocity and recommendation faithfulness as two variables that influence users’ situation awareness. Furthermore, since research identified process automation as a major antecedent of situation awareness, we conceptualize process automation as a third influencing variable. Finally, we develop a conceptual research model and outline our next steps
Social Navigation of Food Recipes
The term Social Navigation captures every-day behaviour used to find information, people, and places – namely through watching, following, and talking to people. We discuss how to design information spaces to allow for social navigation. We applied our ideas in a recipe recommendation system. In a follow-up user study, subjects state that social navigation adds value to the service: it provides for social affordance, and it helps turning a space into a social place. The study also reveals some unresolved design issues, such as the snowball effect where more and more users follow each other down the wrong path, and privacy issues
A qualitative study of stakeholders' perspectives on the social network service environment
Over two billion people are using the Internet at present, assisted by the mediating activities of software agents which deal with the diversity and complexity of information. There are, however, ethical issues due to the monitoring-and-surveillance, data mining and autonomous nature of software agents. Considering the context, this study aims to comprehend stakeholders' perspectives on the social network service environment in order to identify the main considerations for the design of software agents in social network services in the near future. Twenty-one stakeholders, belonging to three key stakeholder groups, were recruited using a purposive sampling strategy for unstandardised semi-structured e-mail interviews. The interview data were analysed using a qualitative content analysis method. It was possible to identify three main considerations for the design of software agents in social network services, which were classified into the following categories: comprehensive understanding of users' perception of privacy, user type recognition algorithms for software agent development and existing software agents enhancement
Justification of Recommender Systems Results: A Service-based Approach
With the increasing demand for predictable and accountable Artificial
Intelligence, the ability to explain or justify recommender systems results by
specifying how items are suggested, or why they are relevant, has become a
primary goal. However, current models do not explicitly represent the services
and actors that the user might encounter during the overall interaction with an
item, from its selection to its usage. Thus, they cannot assess their impact on
the user's experience. To address this issue, we propose a novel justification
approach that uses service models to (i) extract experience data from reviews
concerning all the stages of interaction with items, at different granularity
levels, and (ii) organize the justification of recommendations around those
stages. In a user study, we compared our approach with baselines reflecting the
state of the art in the justification of recommender systems results. The
participants evaluated the Perceived User Awareness Support provided by our
service-based justification models higher than the one offered by the
baselines. Moreover, our models received higher Interface Adequacy and
Satisfaction evaluations by users having different levels of Curiosity or low
Need for Cognition (NfC). Differently, high NfC participants preferred a direct
inspection of item reviews. These findings encourage the adoption of service
models to justify recommender systems results but suggest the investigation of
personalization strategies to suit diverse interaction needs
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