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Kließ, M.S. (author), Jonker, C.M. (author), van Riemsdijk, M.B. (author)Behaviour support technology is aimed at assisting people in organizing their Activities of Daily Living (ADLs). Numerous frameworks have been developed for activity recognition and for generating specific types of support actions, such as reminders. The main goal of our research is to develop a generic formal framework for representing and...conference paper 2018
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- Tielman, M.L. (author), Jonker, C.M. (author), van Riemsdijk, M.B. (author) conference paper 2018
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Mell, Johnathan (author), Gratch, Jonathan (author), Baarslag, T. (author), Aydoğan, Reyhan (author), Jonker, C.M. (author)We present the results of the first annual Human-Agent League of ANAC. By introducing a new human-agent negotiating platform to the research community at large, we facilitated new advancements in human-aware agents. This has succeeded in pushing the envelope in agent design, and creating a corpus of useful human-agent interaction data. Our...conference paper 2018
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Kudo, Yuta (author), Zwaan, Hugo (author), Takahashi, Toru (author), Ishiyama, Rui (author), Jonker, P.P. (author)This paper presents a new identification system for tiny parts that have no space for applying conventional ID marking or tagging. The system marks the parts with a single dot using ink containing shiny particles. The particles in a single dot naturally form a unique pattern. The parts are then identified by matching microscopic images of...conference paper 2018
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Moerland, T.M. (author), Broekens, D.J. (author), Jonker, C.M. (author)In this paper we study how to learn stochastic, multimodal transition dynamics in reinforcement learning (RL) tasks. We focus on evaluating transition function estimation, while we defer planning over this model to future work. Stochasticity is a fundamental property of many task environments. However, discriminative function approximators have...conference paper 2017
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Moerland, T.M. (author), Broekens, D.J. (author), Jonker, C.M. (author)This paper studies directed exploration for reinforcement learning agents by tracking uncertainty about the value of each available action. We identify two sources of uncertainty that are relevant for exploration. The first originates from limited data (parametric uncertainty), while the second originates from the distribution of the returns ...conference paper 2017
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Bortolameotti, Riccardo (author), van Ede, Thijs (author), Caselli, Marco (author), Everts, M.H. (author), Hartel, P.H. (author), Hofstede, Rick (author), Jonker, Willem (author), Peter, A. (author)We present DECANTeR, a system to detect anomalous outbound HTTP communication, which passively extracts fingerprints for each application running on a monitored host. The goal of our system is to detect unknown malware and backdoor communication indicated by unknown fingerprints extracted from a host's network traffic. We evaluate a prototype...conference paper 2017
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Clifford Holmes, J.K.V. (author), Pollard, S (author), Biggs, H (author), Chihambakwe, Kundai (author), Jonker, Willem (author), York, Theo (author), Andres Diaz, Fabio (author), Slinger, J (author)In this paper, we report on a concerted modelling effort in the South African water resources sector in which system dynamics provides the paradigmatic framing for both a stakeholder engagement process and for developing an underpinning, integrative simulation model. We describe the design of the parallel modelling approach and examine the...conference paper 2016
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Polevoy, G. (author), de Weerdt, M.M. (author), Jonker, C.M. (author)People often have reciprocal habits, almost auto- matically responding to others’ actions. A robot who interacts with humans may also reciprocate, in order to come across natural and be predictable. We aim to facilitate decision sup- port that advises on utility-efficient habits in these interac- tions. To this end, given a model for...conference paper 2016
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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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Polevoy, G. (author), de Weerdt, M.M. (author), Jonker, C.M. (author)People often interact repeatedly: with relatives, through file sharing, in politics, etc. Many such interactions are reciprocal: reacting to the actions of the other. In order to facilitate decisions regarding reciprocal interactions, we analyze the development of reciprocation over time. To this end, we propose a model for such interactions...conference paper 2016
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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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Jacobs, E.J. (author), Broekens, J. (author), Jonker, C.M. (author)In this paper we present a mapping between joy, distress, hope and fear, and Reinforcement Learning primitives. Joy / distress is a signal that is derived from the RL update signal, while hope/fear is derived from the utility of the current state. Agent-based simulation experiments replicate psychological and behavioral dynamics of emotion...conference paper 2014
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Harbers, M. (author), Aydogan, R. (author), Jonker, C.M. (author), Neerincx, M.A. (author)Human teamwork can be supported by agent technology by providing each human team member with an agent that monitors, supports and advices the human. The agent can, for example, monitor the human’s workload, and share that information with (agents of) other team members so that work can be distributed effectively. However, though sharing...conference paper 2014
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Harbers, M. (author), Jonker, C.M. (author), Van Riemsdijk, M.B. (author)Teamwork between humans and intelligent systems gains importance with the maturing of agent and robot technology. In the social sciences, sharedness of mental models is used to explain and understand teamwork. To use this concept for developing teams that include agents, we propose contextsensitive sharedness criteria. These criteria specify how...conference paper 2014
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Elkhuizen, W.S. (author), Zaman, T. (author), Verhofstad, W. (author), Jonker, P.P. (author), Dik, J. (author), Geraedts, J.M.P. (author)Paintings are near-planar objects with material characteristics that vary widely. The fact that paint has a material presence is often overlooked, mostly because we often encounter these artworks in the form of two-dimensional reproductions. Capturing paintings in the third dimension is not only important for study, restoration and conservation,...conference paper 2014
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Aydogan, R. (author), Hindriks, K.V. (author), Jonker, C.M. (author)Much attention has been paid to bilateral negotiation in which the dispute is between only two parties. However, automated multilateral negotiation in which more than two negotiating parties need to reach a joint agreement, has received relatively less attention, even though such negotiations are required in many circumstances (e.g. a group of...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), 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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Aydogan, R. (author), Hindriks, K.V. (author), Jonker, C.M. (author)Much attention has been paid to bilateral negotiation in which the dispute is between only two parties. However, automated multilateral negotiation in which more than two negotiating parties need to reach a joint agreement, has received relatively less attention, even though such negotiations are required in many circumstances (e.g. a group of...conference paper 2013