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- keynoteJuly 2019
Let's Chat! Can Virtual Agents learn how to have a Conversation?
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 5–6https://doi.org/10.1145/3308532.3337712Intelligent virtual agents frequently engage the user in conversation. The underlying technology - often referred to as spoken dialogue systems - have experienced a revolution over the past decade, moving from being completely handcrafted to using data-...
- research-articleJuly 2019
Take One For the Team: The Effects of Error Severity in Collaborative Tasks with Social Robots
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 151–158https://doi.org/10.1145/3308532.3329475We explore the effects of robot failure severity (no failure vs. low-impact vs. high-impact) on people's subjective ratings of the robot. We designed an escape room scenario in which one participant teams up with a remotely-controlled Pepper robot. We ...
- research-articleJuly 2019
An Interdependent Model of Personality, Motivation, Emotion, and Mood for Intelligent Virtual Agents
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 65–72https://doi.org/10.1145/3308532.3329474Building intelligent agents that can believably interact with humans is a difficult yet important task in a host of applications, including therapy, education, and entertainment. We submit that in order to enhance believability, the agent's affective ...
- research-articleJuly 2019
An End-to-End Conversational Style Matching Agent
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 111–118https://doi.org/10.1145/3308532.3329473We present an end-to-end voice-based conversational agent that is able to engage in naturalistic multi-turn dialogue and align with the interlocutor's conversational style. The system uses a series of deep neural network components for speech ...
- research-articleJuly 2019
Analyzing Input and Output Representations for Speech-Driven Gesture Generation
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 97–104https://doi.org/10.1145/3308532.3329472This paper presents a novel framework for automatic speech-driven gesture generation, applicable to human-agent interaction including both virtual agents and robots. Specifically, we extend recent deep-learning-based, data-driven methods for speech-...
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- research-articleJuly 2019Best Paper
Internet-based Tailored Virtual Human Health Intervention to Promote Colorectal Cancer Screening: Design Guidelines from Two User Studies
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 73–80https://doi.org/10.1145/3308532.3329471To influence user behaviors, Internet-based virtual humans (VH) have been used to deliver health interventions. However, Internet-based VH health interventions face challenges. The challenges can affect user perceptions of an Internet-based VH health ...
- research-articleJuly 2019
Virtual Human Questionnaire for Analysis of Depression, Anxiety and Personality
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 81–87https://doi.org/10.1145/3308532.3329469Self-report questionnaires like PHQ-9 and GAD-7 are often used in the field of psychology to detect mental health problems and measure their severity. Their validity has been well established by a number of previous studies. However, most previous ...
- research-articleJuly 2019
Being Touched by a Virtual Human.: Relationships Between Heart Rate, Gender, Social Status, and Compliance.
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 49–55https://doi.org/10.1145/3308532.3329467Interpersonal touch remains one of the most puzzling and challenging aspects of communication in virtual reality. A brief touch can be used to influence one's behavior. Our study aimed to analyze the influence of an agent's touch on men's compliance and ...
- research-articleJuly 2019
The Effects of Anthropomorphism and Non-verbal Social Behaviour in Virtual Assistants
- Dimosthenis Kontogiorgos,
- Andre Pereira,
- Olle Andersson,
- Marco Koivisto,
- Elena Gonzalez Rabal,
- Ville Vartiainen,
- Joakim Gustafson
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 133–140https://doi.org/10.1145/3308532.3329466The adoption of virtual assistants is growing at a rapid pace. However, these assistants are not optimised to simulate key social aspects of human conversational environments. Humans are intellectually biased toward social activity when facing ...
- research-articleJuly 2019
What's on Your Virtual Mind?: Mind Perception in Human-Agent Negotiations
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 38–45https://doi.org/10.1145/3308532.3329465Recent research shows that how we respond to other social actors depends on what sort of mind we ascribe to them. In this article we examine how perceptions of a virtual agent's mind shape behavior in human-agent negotiations. We varied descriptions and ...
- research-articleJuly 2019
The Effectiveness of Social Influence Tactics when Used by a Virtual Agent
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 22–29https://doi.org/10.1145/3308532.3329464Research in social science distinguishes between two types of social influence: informational and normative. Informational social influence is driven by the desire to evaluate ambiguous situations correctly, whereas normative social influence is driven ...
- research-articleJuly 2019
Can a Signing Virtual Human Engage a Baby's Attention?
- Setareh Nasihati Gilani,
- David Traum,
- Rachel Sortino,
- Grady Gallagher,
- Kailyn Aaron-Lozano,
- Cryss Padilla,
- Ari Shapiro,
- Jason Lamberton,
- Laura-Ann Petitto
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 162–169https://doi.org/10.1145/3308532.3329463The child developmental period of ages 6-12 months marks a widely understood "critical period" for healthy language learning, during which, failure to receive exposure to language can place babies at risk for language and reading problems spanning life. ...
- research-articleJuly 2019
A Generic Machine Learning Based Approach for Addressee Detection In Multiparty Interaction
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 119–126https://doi.org/10.1145/3308532.3329462Addressee detection is one of the most fundamental tasks for seamless dialogue management and turn taking in human-agent interaction. Whereas addressee detection is implicit in dyadic interaction, it becomes a challenging task in multiparty interactions ...
- research-articleJuly 2019
Effects of a Virtual Human Appearance Fidelity Continuum on Visual Attention in Virtual Reality
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 141–147https://doi.org/10.1145/3308532.3329461In this contribution we studied how different rendering styles of a virtual human impacted users' visual attention in an interactive medical training simulator. In a mixed design experiment, 78 participants interacted with a virtual human representing a ...
- extended-abstractJuly 2019
Designing a Mobile Social and Vocational Reintegration Assistant for Burn-out Outpatient Treatment
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 13–15https://doi.org/10.1145/3308532.3329460Using Social Agents as health-care assistants or trainers is one focus area of IVA research. This paper presents a concept of our mobile Social Agent EmmA in the role of a vocational reintegration assistant for burn-out outpatient treatment. We follow a ...
- extended-abstractJuly 2019
Gesture Class Prediction by Recurrent Neural Network and Attention Mechanism
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 233–235https://doi.org/10.1145/3308532.3329458Our objective is to develop a machine-learning model that allows a virtual agent to automatically perform appropriate communicative gestures. Our first step is to compute when a gesture should be performed. We express this as classification problem. We ...
- extended-abstractJuly 2019
Robot Dominance Expression Through Parameter-based Behaviour Modulation
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 224–226https://doi.org/10.1145/3308532.3329456A mayor challenge in human-robot interaction is the synthesis of social signals through non-verbal behaviour expression. Appropriate perception and expression of dominance (verticality) is essential for social interaction. In this paper, we present our ...
- extended-abstractJuly 2019
Impact of Virtual Environment Design on the Assessment of Virtual Agents
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 148–150https://doi.org/10.1145/3308532.3329455Virtual agents usually come in a virtual environment that can be designed in various ways which might affect users. This paper presents a study that examines whether the design of the virtual environment has an impact on the assessment of the virtual ...
- extended-abstractJuly 2019
How Much Do You Perceive This?: An Analysis on Perceptions of Geometric Features, Personalities and Emotions in Virtual Humans
- Victor Araujo,
- Rodolfo Migon Favaretto,
- Paulo Knob,
- Soraia Raupp Musse,
- Felipe Vilanova,
- Angelo Brandelli Costa
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 179–181https://doi.org/10.1145/3308532.3329454This work aims to evaluate people's perception regarding geometric features, personalities and emotions characteristics in virtual humans. For this, we use as a basis, a dataset containing the tracking files of pedestrians captured from spontaneous ...
- extended-abstractJuly 2019
Integrating Argumentation with Social Conversation between Multiple Virtual Coaches
- Reshmashree B. Kantharaju,
- Alison Pease,
- Dennis Reidsma,
- Catherine Pelachaud,
- Mark Snaith,
- Merijn Bruijnes,
- Randy Klaassen,
- Tessa Beinema,
- Gerwin Huizing,
- Donatella Simonetti,
- Dirk Heylen,
- Harm op den Akker
IVA '19: Proceedings of the 19th ACM International Conference on Intelligent Virtual AgentsPages 203–205https://doi.org/10.1145/3308532.3329450This paper presents progress and challenges in developing a platform for multi-character, argumentation based, interaction with a group of virtual coaches for healthcare advice and promotion of healthy behaviours. Several challenges arise in the ...