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Mercuur, R.A. (author), Dignum, M.V. (author), Jonker, C.M. (author)Inducing behavioural change requires a good understanding of how habits break. We identified two theories in the psychological literature on this process: the decrease theory and persist theory. Both theories are used to explain behavioural change, but one states the original habit fades out, while the other theory states the habit persists. We...conference paper 2021
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Cavalcante Siebert, L. (author), Mercuur, R.A. (author), Dignum, M.V. (author), van den Hoven, M.J. (author), Jonker, C.M. (author)Autonomous agents (AA) will increasingly be interacting with us in our daily lives. While we want the benefits attached to AAs, it is essential that their behavior is aligned with our values and norms. Hence, an AA will need to estimate the values and norms of the humans it interacts with, which is not a straightforward task when solely...conference paper 2020
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Ebrahimi Fard, A. (author), Mercuur, R.A. (author), Dignum, M.V. (author), Jonker, C.M. (author), van de Walle, B.A. (author)Rumour is a collective emergent phenomenon with a potential for provoking a crisis. Modelling approaches have been deployed since five decades ago; however, the focus was mostly on epidemic behaviour of the rumours which does not take into account the differences between agents. We use social practice theory to model agent decision-making in...conference paper 2020
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Mercuur, R.A. (author), Dignum, M.V. (author), Jonker, C.M. (author)Evidence-driven agent-based modeling plays a useful part in understanding social phenomena. By integrating social-cognitive theories in our agent models, we bear evidence from social and psychological studies on our models for human decision-making. Social practice theory (SPT) provides a socio-cognitive theory that emphasizes three...review 2020
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Akata, Zeynep (author), Dignum, M.V. (author), Hindriks, K.V. (author), Hung, H.S. (author), Jonker, C.M. (author), Neerincx, M.A. (author), Oliehoek, F.A. (author), van Riemsdijk, M.B. (author), Robbins-van Wynsberghe, A.L. (author)We define hybrid intelligence (HI) as the combination of human and machine intelligence, augmenting human intellect and capabilities instead of replacing them and achieving goals that were unreachable by either humans or machines. HI is an important new research focus for artificial intelligence, and we set a research agenda for HI by...journal article 2020
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Mercuur, R.A. (author), Dignum, M.V. (author), Jonker, C.M. (author)Social simulations gain strength when agent behaviour can (1) represent human behaviour and (2) be explained in understandable terms. Agents with values and norms lead to simulation results that meet human needs for explanations, but have not been tested on their ability to reproduce human behaviour. This paper compares empirical data on...journal article 2019
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King, T.C. (author), De Vos, Marina (author), Dignum, M.V. (author), Jonker, C.M. (author), Li, Tingting (author), Padget, Julian (author), van Riemsdijk, M.B. (author)An institution typically comprises constitutive rules, which give shape and meaning to social interactions and regulative rules, which prescribe agent behaviour in the society. Regulative rules guide social interaction, in particular when they are coupled with reward and punishment regulations that are enforced for (non-)compliance. Institution...journal article 2017
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King, T.W. (author), Dignum, M.V. (author), Jonker, C.M. (author)Institutions regulate societies. Comprising Searle's constitutive counts-as rules, "A counts-as B in context C", an institution ascribes from brute and institutional facts (As), a social reality comprising institutional facts (Bs) conditional on the social reality (contexts Cs). When brute facts change an institution evolves from one social...conference paper 2016
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King, T.C. (author), Van Riemsdijk, M.B. (author), Dignum, V. (author), Jonker, C.M. (author)This paper deals with the problem of automating the contribution of resources owned by people to do work for others, whilst providing a means for owners of resources to maintain autonomy over how, when and to whom their resources are used with the specification of resource use policies. We give representations of requests for resource usage as a...book chapter 2015
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Dignum, V. (author), Jonker, C.M. (author), Prada, R. (author), Dignum, F. (author)Socially intelligent systems exhibit, understand, and reason about social behavior, in order to support people in their daily lives. We claim that a fundamental new approach based on social concepts is needed to build these socially intelligent systems. In this paper, we explore how the concepts of social practices and social identities can be...conference paper 2014
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Van der Zwaan, J.M. (author), Dignum, M.V. (author), Jonker, C.M. (author)This paper presents a qualitative study of the supportive behavior of an Embodied Conversational Agent (ECA) that provides social support to cyberbullying victims. The results indicate that social support is conveyed. In addition, we demonstrate a method that can be utilized to evaluate embodied agents for vulnerable target audiences (e.g.,...conference paper 2013
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Van der Zwaan, J.M. (author), Dignum, M.V. (author), Jonker, C.M. (author)This paper presents a qualitative study of the supportive behavior of an Embodied Conversational Agent (ECA) that provides social support to cyberbullying victims. The results indicate that social support is conveyed. In addition, we demonstrate a method that can be utilized to evaluate embodied agents for vulnerable target audiences (e.g.,...conference paper 2013
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Van der Zwaan, J.M. (author), Geraerts, E. (author), Dignum, V. (author), Jonker, C.M. (author)People are able to comfort others by talking about their problems. In our research, we are exploring whether computers can provide social support in a similar manner. Recently, we proposed a design for an empathic virtual buddy that supports victims of cyberbullying. To validate our approach in providing social support and to gather feedback...book chapter 2012
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Van der Zwaan, J.M. (author), Dignum, V. (author), Jonker, C.M. (author)In everyday life, people frequently talk to others to help them deal with negative emotions. To some extent, everybody is capable of comforting other people, but so far conversational agents are unable to deal with this type of situation. To provide intelligent agents with the capability to give emotional support, we propose a domain-independent...conference paper 2012
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Van der Zwaan, J.M. (author), Dignum, V. (author), Jonker, C.M. (author)Recently, we proposed a dialogue model for social support. To validate this model, we analyzed 23 real world chat conversations. After some adjustments, the dialogue sequence patterns specified in the model cover 87.4% of the data. Based on this result, we conclude that the dialogue model accurately describes comforting conversations. Next, the...conference paper 2012
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Van der Zwaan, J.M. (author), Dignum, V. (author), Jonker, C.M. (author)Recent developments in affective computing show that Embodied Conversational Agents (ECAs) are increasingly capable of complex social and emotional dialogues. Our research concerns the design and evaluation of an ECA that provides social support to children that are being bullied though the Internet. Recently, we proposed a domain-independent...conference paper 2012
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Van der Zwaan, J.M. (author), Dignum, V. (author), Jonker, C.M. (author)An important task for empathic agents is to provide social support, that is, to help alleviate emotional distress. In this paper we specify verbal support types for a dialogue agent that provides social support, and propose an evaluation method for such an agent in a sensitive domain (cyberbullying) with a vulnerable target audience (children).conference paper 2012
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Van der Zwaan, J.M. (author), Dignum, V. (author), Jonker, C.M. (author)An important task for empathic agents is to provide social support, that is, to help people increase their well-being and decrease the perceived burden of their problems. The contributions of this paper are 1) the specifcation of speech acts for a social support dialogue agent, and 2) an evaluation method for this agent. The dialogue agent...conference paper 2012
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Aldewereld, H. (author), Dignum, V. (author), Jonker, C.M. (author), Van Riemsdijk, M.B. (author)The organisational specification of a multi-agent system supports agents’ effectiveness in attaining their purpose, or prevent certain undesired behaviour from occurring. This requires that agents are able to find out about the organisational purpose and description and decide on its appropriateness for their own objectives. Organisational...journal article 2012
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Van der Zwaan, J.M. (author), Dignum, M.V. (author), Jonker, C.M. (author)This paper proposes a design for an Embodied Conversational Agent (ECA) that empowers victims of cyberbullying by simulating peer support. The anti-cyberbullying buddy helps a child to cope with negative emotions due to a cyberbullying incident and it shows the child how to deal with future incidents of cyberbullying. The buddy interacts with...conference paper 2010