Catherine Pelachaud

350 papers A* 10A 23B 125C 4Misc 2Journal 90Unranked 81

Year	Rank	Type	Title / Venue / Authors
2025	J	`jnl`	"Did she just tap me?": qualifying multisensory feedback for social touch during human-agent interaction in virtual reality. Frontiers Virtual Real. Grégoire Richard, Fabien Boucaud, Catherine Pelachaud, Indira Thouvenin
2025	A*	`conf`	"Mm, Wat?" Detecting Other-initiated Repair Requests in Dialogue. EMNLP Anh Ngo, Nicolas Rollet, Catherine Pelachaud, Chloé Clavel
2025	J	`jnl`	"Mm, Wat?" Detecting Other-initiated Repair Requests in Dialogue. CoRR Anh Ngo, Nicolas Rollet, Catherine Pelachaud, Chloé Clavel
2025	—	`conf`	Adapting Verbal and Nonverbal Behaviors of an SIA. GENEA Catherine Pelachaud
2025	J	`jnl`	Breaking Players' Expectations: The Role of Non-Player Characters' Coherence and Consistency. IEEE Trans. Affect. Comput. Remi Poivet, Catherine Pelachaud, Malika Auvray
2025	J	`jnl`	Breaking Players' expectations: the Role of Non-player Characters' coherence and Consistency. CoRR Remi Poivet, Catherine Pelachaud, Malika Auvray
2025	J	`jnl`	EMMI-Empathic Multimodal Motivational Interviews: automatic multimodal features extraction and patient type definition. Lang. Resour. Evaluation Lucie Galland, Catherine Pelachaud, Florian Pecune
2025	B	`conf`	Evaluating the Gender Label in Virtual Babies Using an Interactive Environment. IVA Victor Araujo, Gabriel Fonseca Silva, Catherine Pelachaud, Angelo Brandelli Costa, Soraia Raupp Musse
2025	J	`jnl`	GRETA: Modular Platform to Create Adaptive Socially Interactive Agents. CoRR Michele Grimaldi, Jieyeon Woo, Fabien Boucaud, Lucie Galland, Nezih Younsi, Liu Yang, Mireille Fares, Sean Graux, Philippe Gauthier, Catherine Pelachaud
2025	J	`jnl`	Gelina: Unified Speech and Gesture Synthesis via Interleaved Token Prediction. CoRR Teo Guichoux, Théodor Lemerle, Shivam Mehta, Jonas Beskow, Gustav Eje Henter, Laure Soulier, Catherine Pelachaud, Nicolas Obin
2025	B	`conf`	Greta 2.0: Social Interactive Agent system, optimized for neural network integration. IVA Takeshi Saga, Lucie Galland, Nezih Younsi, Catherine Pelachaud
2025	B	`conf`	SMART-DREAM: To Condition or Not to Condition; A Study on the Impact of LLM Conditioning on Motivational Interview Dialog Virtual Agent. IVA Lucie Galland, Catherine Pelachaud, Florian Pecune
2025	J	`jnl`	Tailored Conversations beyond LLMs: A RL-Based Dialogue Manager. CoRR Lucie Galland, Catherine Pelachaud, Florian Pecune
2025	J	`jnl`	TranSTYLer: Multimodal behavioural style transfer for facial and body gestures generation. Speech Commun. Mireille Fares, Catherine Pelachaud, Nicolas Obin
2025	J	`jnl`	Vicarious Evaluation of a Decision Model for Human-Agent Social Touch Interactions. IEEE Trans. Affect. Comput. Fabien Boucaud, Catherine Pelachaud, Indira Thouvenin
2025	J	`jnl`	Voice Activity Projection Model with Multimodal Encoders. CoRR Takeshi Saga, Catherine Pelachaud
2024	B	`conf`	2D or not 2D: How Does the Dimensionality of Gesture Representation Affect 3D Co-Speech Gesture Generation? IVA Teo Guichoux, Laure Soulier, Nicolas Obin, Catherine Pelachaud
2024	J	`jnl`	2D or not 2D: How Does the Dimensionality of Gesture Representation Affect 3D Co-Speech Gesture Generation? CoRR Teo Guichoux, Laure Soulier, Nicolas Obin, Catherine Pelachaud
2024	J	`jnl`	Adaptive virtual agent: Design and evaluation for real-time human-agent interaction. Int. J. Hum. Comput. Stud. Jieyeon Woo, Kazuhiro Shidara, Catherine Achard, Hiroki Tanaka, Satoshi Nakamura, Catherine Pelachaud
2024	B	`conf`	An Action Language-Based Formalisation of an Abstract Argumentation Framework. PRIMA Yann Munro, Camilo Sarmiento, Isabelle Bloch, Gauvain Bourgne, Catherine Pelachaud, Marie-Jeanne Lesot
2024	J	`jnl`	An action language-based formalisation of an abstract argumentation framework. CoRR Yann Munro, Camilo Sarmiento, Isabelle Bloch, Gauvain Bourgne, Catherine Pelachaud, Marie-Jeanne Lesot
2024	J	`jnl`	Arthur and Bella: multi-purpose empathetic AI assistants for daily conversations. Vis. Comput. Paulo Ricardo Knob, Natália Dal Pizzol, Soraia Raupp Musse, Catherine Pelachaud
2024	—	`conf`	Beyond Words: Decoding Facial Expression Dynamics in Motivational Interviewing. LREC/COLING Nezih Younsi, Catherine Pelachaud, Laurence Chaby
2024	B	`conf`	Diffusion models for virtual agent facial expression generation in Motivational interviewing. AVI Nezih Younsi, Catherine Pelachaud, Laurence Chaby
2024	J	`jnl`	EMMI - Empathic Multimodal Motivational Interviews Dataset: Analyses and Annotations. CoRR Lucie Galland, Catherine Pelachaud, Florian Pecune
2024	J	`jnl`	Editorial: Virtual agents in virtual reality: design and implications for VR users. Frontiers Virtual Real. Pierre Raimbaud, Béatrice Biancardi, Iana Podkosova, Catherine Pelachaud
2024	J	`jnl`	Evaluation of Virtual Agents' Hostility in Video Games. IEEE Trans. Affect. Comput. Remi Poivet, Alexandra de Lagarde, Catherine Pelachaud, Malika Auvray
2024	J	`jnl`	Exploiting temporal information to detect conversational groups in videos and predict the next speaker. CoRR Lucrezia Tosato, Victor Fortier, Isabelle Bloch, Catherine Pelachaud
2024	J	`jnl`	Exploiting temporal information to detect conversational groups in videos and predict the next speaker. Pattern Recognit. Lett. Lucrezia Tosato, Victor Fortier, Isabelle Bloch, Catherine Pelachaud
2024	B	`conf`	Exploration of Human Repair Initiation in Task-oriented Dialogue: A Linguistic Feature-based Approach. SIGDIAL Anh Ngo, Dirk Heylen, Nicolas Rollet, Catherine Pelachaud, Chloé Clavel
2024	B	`conf`	Generating Unexpected yet Relevant User Dialog Acts. SIGDIAL Lucie Galland, Catherine Pelachaud, Florian Pecune
2024	B	`conf`	Greta, what else? Our research towards building socially interactive agents. ICMI Catherine Pelachaud
2024	J	`jnl`	Investigating the impact of 2D gesture representation on co-speech gesture generation. CoRR Teo Guichoux, Laure Soulier, Nicolas Obin, Catherine Pelachaud
2024	B	`conf`	Seeing and Hearing What Has Not Been Said: A multimodal client behavior classifier in Motivational Interviewing with interpretable fusion. FG Lucie Galland, Catherine Pelachaud, Florian Pecune
2024	B	`conf`	Simulating Patient Oral Dialogues: A Study on Naturalness and Coherence of Conditioned Large Language Models. IVA Lucie Galland, Catherine Pelachaud, Florian Pecune
2024	—	`conf`	Sémantique agrégative graduelle pour les systèmes d'argumentation bipolaires pondérés. JIAF-JFPDA Yann Munro, Isabelle Bloch, Mohamed Chetouani, Catherine Pelachaud, Marie-Jeanne Lesot
2023	B	`conf`	"\"It patted my arm\": Investigating Social Touch from a Virtual Agent". HAI Fabien Boucaud, Catherine Pelachaud, Indira Thouvenin
2023	B	`conf`	4th Workshop on Social Affective Multimodal Interaction for Health (SAMIH). ICMI Hiroki Tanaka, Satoshi Nakamura, Jean-Claude Martin, Catherine Pelachaud
2023	J	`jnl`	AMII: Adaptive Multimodal Inter-personal and Intra-personal Model for Adapted Behavior Synthesis. CoRR Jieyeon Woo, Mireille Fares, Catherine Pelachaud, Catherine Achard
2023	A	`conf`	ASAP: Endowing Adaptation Capability to Agent in Human-Agent Interaction. IUI Jieyeon Woo, Catherine Pelachaud, Catherine Achard
2023	—	`conf`	An Adaptive Virtual Agent Platform for Automated Social Skills Training. ICMI Companion Takeshi Saga, Jieyeon Woo, Alexis Gerard, Hiroki Tanaka, Catherine Achard, Satoshi Nakamura, Catherine Pelachaud
2023	B	`conf`	Are we in sync during turn switch? FG Jieyeon Woo, Liu Yang, Catherine Achard, Catherine Pelachaud
2023	B	`conf`	Conducting Cognitive Behavioral Therapy with an Adaptive Virtual Agent. IVA Jieyeon Woo, Michele Grimaldi, Catherine Pelachaud, Catherine Achard
2023	J	`jnl`	Exchanging... Watch out! CoRR Liu Yang, Jieyeon Woo, Catherine Achard, Catherine Pelachaud
2023	—	`conf`	I-Brow: Hierarchical and Multimodal Transformer Model for Eyebrows Animation Synthesis. HCI (41) Mireille Fares, Catherine Pelachaud, Nicolas Obin
2023	B	`conf`	IAVA: Interactive and Adaptive Virtual Agent. IVA Jieyeon Woo, Michele Grimaldi, Catherine Pelachaud, Catherine Achard
2023	—	`conf`	Is Turn-Shift Distinguishable with Synchrony? HCI (41) Jieyeon Woo, Liu Yang, Catherine Pelachaud, Catherine Achard
2023	J	`jnl`	META4: Semantically-Aligned Generation of Metaphoric Gestures Using Self-Supervised Text and Speech Representation. CoRR Mireille Fares, Catherine Pelachaud, Nicolas Obin
2023	B	`conf`	Now or When?: Interruption timing prediction in dyadic interaction. IVA Liu Yang, Catherine Achard, Catherine Pelachaud
2023	B	`ed.`	Proceedings of the 23rd ACM International Conference on Intelligent Virtual Agents, IVA 2023, Würzburg, Germany, September 19-22, 2023 IVA Birgit Lugrin, Marc Erich Latoschik, Sebastion von Mammen, Stefan Kopp, Florian Pécune, Catherine Pelachaud
2023	—	`conf`	Reciprocal Adaptation Measures for Human-Agent Interaction Evaluation. ICAART (1) Jieyeon Woo, Catherine Pelachaud, Catherine Achard
2023	J	`jnl`	Seeing and hearing what has not been said; A multimodal client behavior classifier in Motivational Interviewing with interpretable fusion. CoRR Lucie Galland, Catherine Pelachaud, Florian Pecune
2023	J	`jnl`	Social Functions of Machine Emotional Expressions. Proc. IEEE Celso M. de Melo, Jonathan Gratch, Stacy Marsella, Catherine Pelachaud
2023	B	`conf`	The influence of conversational agents' role and behaviors on narrative experiences. IVA Remi Poivet, Catherine Pelachaud, Malika Auvray
2023	B	`conf`	Towards investigating gaze and laughter coordination in socially interactive agents. HAI Vladislav Maraev, Chiara Mazzocconi, Christine Howes, Catherine Pelachaud
2023	J	`jnl`	TranSTYLer: Multimodal Behavioral Style Transfer for Facial and Body Gestures Generation. CoRR Mireille Fares, Catherine Pelachaud, Nicolas Obin
2023	J	`jnl`	ZS-MSTM: Zero-Shot Style Transfer for Gesture Animation driven by Text and Speech using Adversarial Disentanglement of Multimodal Style Encoding. CoRR Mireille Fares, Catherine Pelachaud, Nicolas Obin
2023	B	`conf`	Zero-Shot Style Transfer for Multimodal Data-Driven Gesture Synthesis. FG Mireille Fares, Catherine Pelachaud, Nicolas Obin
2023	J	`jnl`	Zero-shot style transfer for gesture animation driven by text and speech using adversarial disentanglement of multimodal style encoding. Frontiers Artif. Intell. Mireille Fares, Catherine Pelachaud, Nicolas Obin
2022	A	`ed.`	21st International Conference on Autonomous Agents and Multiagent Systems, AAMAS 2022, Auckland, New Zealand, May 9-13, 2022 AAMAS Piotr Faliszewski, Viviana Mascardi, Catherine Pelachaud, Matthew E. Taylor
2022	B	`conf`	3rd Workshop on Social Affective Multimodal Interaction for Health (SAMIH). ICMI Hiroki Tanaka, Satoshi Nakamura, Kazuhiro Shidara, Jean-Claude Martin, Catherine Pelachaud
2022	J	`jnl`	Adapting conversational strategies in information-giving human-agent interaction. Frontiers Artif. Intell. Lucie Galland, Catherine Pelachaud, Florian Pecune
2022	B	`conf`	Adapting conversational strategies to co-optimize agent's task performance and user's engagement. IVA Lucie Galland, Catherine Pelachaud, Florian Pecune
2022	B	`conf`	Annotating Interruption in Dyadic Human Interaction. LREC Liu Yang, Catherine Achard, Catherine Pelachaud
2022	—	`conf`	Argumentation and Causal Models in Human-Machine Interaction: A Round Trip. AIC Yann Munro, Isabelle Bloch, Mohamed Chetouani, Marie-Jeanne Lesot, Catherine Pelachaud
2022	—	`ch.`	Challenge Discussion on Socially Interactive Agents: Considerations on Social Interaction, Computational Architectures, Evaluation, and Ethics. The Handbook on Socially Interactive Agents (2) Birgit Lugrin, Catherine Pelachaud, Elisabeth André, Ruth Aylett, Timothy W. Bickmore, Cynthia Breazeal, Joost Broekens, Kerstin Dautenhahn, Jonathan Gratch, Stefan Kopp, Jacqueline Nadel, Ana Paiva, Agnieszka Wykowska
2022	J	`jnl`	Conveying Emotions Through Device-Initiated Touch. IEEE Trans. Affect. Comput. Marc Teyssier, Gilles Bailly, Catherine Pelachaud, Eric Lecolinet
2022	J	`jnl`	Exploiting Evolutionary Algorithms to Model Nonverbal Reactions to Conversational Interruptions in User-Agent Interactions. IEEE Trans. Affect. Comput. Angelo Cafaro, Brian Ravenet, Catherine Pelachaud
2022	—	`conf`	Impact of Error-making Peer Agent Behaviours in a Multi-agent Shared Learning Interaction for Self-Regulated Learning. ICAART (1) Sooraj Krishna, Catherine Pelachaud
2022	—	`conf`	Interacting with Socially Interactive Agents. ICAART (1) Catherine Pelachaud
2022	J	`jnl`	Leveraging the Dynamics of Non-Verbal Behaviors For Social Attitude Modeling. IEEE Trans. Affect. Comput. Soumia Dermouche, Catherine Pelachaud
2022	—	`conf`	Multimodal Analysis of Interruptions. HCI (18) Liu Yang, Catherine Achard, Catherine Pelachaud
2022	B	`conf`	Multimodal classification of interruptions in humans' interaction. ICMI Liu Yang, Catherine Achard, Catherine Pelachaud
2022	J	`jnl`	Representation Learning of Image Schema. CoRR Fajrian Yunus, Chloé Clavel, Catherine Pelachaud
2022	—	`conf`	Robust Detection of Conversational Groups Using a Voting Scheme and a Memory Process. ICPRAI (2) Victor Fortier, Isabelle Bloch, Catherine Pelachaud
2022	—	`book`	The Handbook on Socially Interactive Agents:20 years of Research on Embodied Conversational Agents, Intelligent Virtual Agents, and Social Robotics Volume 2: Interactivity, Platforms, Application The Handbook on Socially Interactive Agents (2) Birgit Lugrin, Catherine Pelachaud, David Traum
2022	—	`conf`	Transformer Network for Semantically-Aware and Speech-Driven Upper-Face Generation. EUSIPCO Mireille Fares, Catherine Pelachaud, Nicolas Obin
2022	J	`jnl`	Zero-Shot Style Transfer for Gesture Animation driven by Text and Speech using Adversarial Disentanglement of Multimodal Style Encoding. CoRR Mireille Fares, Michele Grimaldi, Catherine Pelachaud, Nicolas Obin
2021	B	`conf`	2nd Workshop on Social Affective Multimodal Interaction for Health (SAMIH). ICMI Hiroki Tanaka, Satoshi Nakamura, Jean-Claude Martin, Catherine Pelachaud
2021	—	`conf`	A Framework for the Assessment and Training of Collaborative Problem-Solving Social Skills. ICMI Companion Jennifer Hamet Bagnou, Elise Prigent, Jean-Claude Martin, Jieyeon Woo, Liu Yang, Catherine Achard, Catherine Pelachaud, Céline Clavel
2021	J	`jnl`	A multimodal corpus of simulated consultations between a patient and multiple healthcare professionals. Lang. Resour. Evaluation Mark Snaith, Nicholas Conway, Tessa Beinema, Dominic De Franco, Alison Pease, Reshmashree B. Kantharaju, Mathilde Janier, Gerwin Huizing, Catherine Pelachaud, Harm op den Akker
2021	J	`jnl`	Adaptation Mechanisms in Human-Agent Interaction: Effects on User's Impressions and Engagement. Frontiers Comput. Sci. Béatrice Biancardi, Soumia Dermouche, Catherine Pelachaud
2021	B	`conf`	Agents United: An Open Platform for Multi-Agent Conversational Systems. IVA Tessa Beinema, Daniel P. Davison, Dennis Reidsma, Oresti Banos, Merijn Bruijnes, Brice Donval, Álvaro Fides-Valero, Dirk Heylen, Dennis Hofs, Gerwin Huizing, Reshmashree B. Kantharaju, Randy Klaassen, Jan Kolkmeier, Kostas Konsolakis, Alison Pease, Catherine Pelachaud, Donatella Simonetti, Mark Snaith, Vicente Traver, Jorien van Loon, Jacky Visser, Marcel Weusthof, Fajrian Yunus, Hermie Hermens, Harm op den Akker
2021	A	`conf`	Decision Model for a Virtual Agent that can Touch and be Touched. AAMAS Fabien Boucaud, Catherine Pelachaud, Indira Thouvenin
2021	—	`conf`	Evaluation of Multi-party Virtual Agents. CHItaly Workshops Reshmashree B. Kantharaju, Catherine Pelachaud
2021	B	`conf`	Generation of Multimodal Behaviors in the Greta platform. IVA Michele Grimaldi, Catherine Pelachaud
2021	—	`ed.`	ICMI '21 Companion: Companion Publication of the 2021 International Conference on Multimodal Interaction, Montreal, QC, Canada, October 18 - 22, 2021 ICMI Companion Zakia Hammal, Carlos Busso, Catherine Pelachaud, Sharon L. Oviatt, Albert Ali Salah, Guoying Zhao
2021	B	`ed.`	ICMI '21: International Conference on Multimodal Interaction, Montréal, QC, Canada, October 18-22, 2021 ICMI Zakia Hammal, Carlos Busso, Catherine Pelachaud, Sharon L. Oviatt, Albert Ali Salah, Guoying Zhao
2021	B	`conf`	Interruptions in Human-Agent Interaction. IVA Liu Yang, Catherine Achard, Catherine Pelachaud
2021	—	`ch.`	Multimodal Behavior Modeling for Socially Interactive Agents. The Handbook on Socially Interactive Agents (1) Catherine Pelachaud, Carlos Busso, Dirk Heylen
2021	—	`conf`	Sequence-to-Sequence Predictive Model: From Prosody to Communicative Gestures. HCI (16) Fajrian Yunus, Chloé Clavel, Catherine Pelachaud
2021	B	`conf`	Social Signals of Cohesion in Multi-party Interactions. IVA Reshmashree B. Kantharaju, Catherine Pelachaud
2021	A*	`conf`	Softly: Simulated Empathic Touch between an Agent and a Human. ACM Multimedia Maxime Grandidier, Fabien Boucaud, Indira Thouvenin, Catherine Pelachaud
2021	—	`book`	The Handbook on Socially Interactive Agents: 20 Years of Research on Embodied Conversational Agents, Intelligent Virtual Agents, and Social Robotics Volume 1: Methods, Behavior, Cognition The Handbook on Socially Interactive Agents (1) Birgit Lugrin, Catherine Pelachaud, David R. Traum
2020	—	`conf`	CardBot: Towards an affordable humanoid robot platform for Wizard of Oz Studies in HRI. HRI (Companion) Sooraj Krishna, Catherine Pelachaud
2020	J	`jnl`	Engagement in Human-Agent Interaction: An Overview. Frontiers Robotics AI Catharine Oertel, Ginevra Castellano, Mohamed Chetouani, Jauwairia Nasir, Mohammad Obaid, Catherine Pelachaud, Christopher Peters
2020	—	`conf`	FRACTOS: Learning to be a Better Learner by Building Fractions. HRI (Companion) Sooraj Krishna, Catherine Pelachaud, Arvid Kappas
2020	Misc	`conf`	How confident are you? Exploring the role of fillers in the automatic prediction of a speaker's confidence. ICASSP Tanvi Dinkar, Ioana Vasilescu, Catherine Pelachaud, Chloé Clavel
2020	—	`conf`	Impression Detection and Management Using an Embodied Conversational Agent. HCI (2) Chen Wang, Béatrice Biancardi, Maurizio Mancini, Angelo Cafaro, Catherine Pelachaud, Thierry Pun, Guillaume Chanel
2020	B	`conf`	Influence of virtual agent politeness behaviors on how users join small conversational groups. IVA Sahba Zojaji, Christopher Peters, Catherine Pelachaud
2020	B	`conf`	Multimodal Analysis of Cohesion in Multi-party Interactions. LREC Reshmashree Bangalore Kantharaju, Caroline Langlet, Mukesh Barange, Chloé Clavel, Catherine Pelachaud
2020	J	`jnl`	Selected Best Works From Automated Face and Gesture Recognition 2019. IEEE Trans. Biom. Behav. Identity Sci. J. Ross Beveridge, Mohamed Daoudi, Catherine Pelachaud, Richa Singh
2020	J	`jnl`	Sequence-to-Sequence Predictive Model: From Prosody To Communicative Gestures. CoRR Fajrian Yunus, Chloé Clavel, Catherine Pelachaud
2020	B	`conf`	Social Affective Multimodal Interaction for Health. ICMI Hiroki Tanaka, Satoshi Nakamura, Jean-Claude Martin, Catherine Pelachaud
2020	B	`conf`	The ISO Standard for Dialogue Act Annotation, Second Edition. LREC Harry Bunt, Volha Petukhova, Emer Gilmartin, Catherine Pelachaud, Alex Chengyu Fang, Simon Keizer, Laurent Prévot
2019	B	`conf`	A Computational Model for Managing Impressions of an Embodied Conversational Agent in Real-Time. ACII Béatrice Biancardi, Chen Wang, Maurizio Mancini, Angelo Cafaro, Guillaume Chanel, Catherine Pelachaud
2019	J	`jnl`	A Methodology for the Automatic Extraction and Generation of Non-Verbal Signals Sequences Conveying Interpersonal Attitudes. IEEE Trans. Affect. Comput. Mathieu Chollet, Magalie Ochs, Catherine Pelachaud
2019	B	`conf`	Contribution of temporal and multi-level body cues to emotion classification. ACII Nesrine Fourati, Catherine Pelachaud, Patrice Darmon
2019	B	`conf`	Engagement Modeling in Dyadic Interaction. ICMI Soumia Dermouche, Catherine Pelachaud
2019	B	`conf`	Generative Model of Agent's Behaviors in Human-Agent Interaction. ICMI Soumia Dermouche, Catherine Pelachaud
2019	B	`conf`	Gesture Class Prediction by Recurrent Neural Network and Attention Mechanism. IVA Fajrian Yunus, Chloé Clavel, Catherine Pelachaud
2019	B	`conf`	Integrating Argumentation with Social Conversation between Multiple Virtual Coaches. IVA 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
2019	J	`jnl`	Is Two Better than One? Effects of Multiple Agents on User Persuasion. CoRR Reshmashree B. Kantharaju, Dominic De Franco, Alison Pease, Catherine Pelachaud
2019	B	`conf`	Managing Agent's Impression Based on User's Engagement Detection. IVA Maurizio Mancini, Béatrice Biancardi, Soumia Dermouche, Paul Lerner, Catherine Pelachaud
2019	J	`jnl`	Managing an Agent's Self-Presentational Strategies During an Interaction. Frontiers Robotics AI Béatrice Biancardi, Maurizio Mancini, Paul Lerner, Catherine Pelachaud
2019	—	`ch.`	Nonverbal behavior in multimodal performances. The Handbook of Multimodal-Multisensor Interfaces, Volume 3 (3) Angelo Cafaro, Catherine Pelachaud, Stacy C. Marsella
2019	B	`ed.`	Proceedings of the 19th ACM International Conference on Intelligent Virtual Agents, IVA 2019, Paris, France, July 2-5, 2019. IVA Catherine Pelachaud, Jean-Claude Martin, Hendrik Buschmeier, Gale M. Lucas, Stefan Kopp
2019	A*	`conf`	Skin-On Interfaces: A Bio-Driven Approach for Artificial Skin Design to Cover Interactive Devices. UIST Marc Teyssier, Gilles Bailly, Catherine Pelachaud, Eric Lecolinet, Andrew Conn, Anne Roudaut
2019	—	`conf`	Social Touch in Human-agent Interactions in an Immersive Virtual Environment. VISIGRAPP (2: HUCAPP) Fabien Boucaud, Quentin Tafiani, Catherine Pelachaud, Indira Thouvenin
2019	B	`conf`	Towards an Adaptive Regulation Scaffolding through Role-based Strategies. IVA Sooraj Krishna, Catherine Pelachaud, Arvid Kappas
2018	—	`conf`	Attitude Modeling for Virtual Character Based on Temporal Sequence Mining: Extraction and Evaluation. MOCO Soumia Dermouche, Catherine Pelachaud
2018	A	`conf`	Automatic Nonverbal Behavior Generation from Image Schemas. AAMAS Brian Ravenet, Chloé Clavel, Catherine Pelachaud
2018	C	`conf`	Council of Coaches - A Novel Holistic Behavior Change Coaching Approach. ICT4AWE Harm op den Akker, Rieks op den Akker, Tessa Beinema, Oresti Baños, Dirk Heylen, Björn Bedsted, Alison Pease, Catherine Pelachaud, Vicente Traver Salcedo, Sofoklis A. Kyriazakos, Hermie Hermens
2018	B	`conf`	From analysis to modeling of engagement as sequences of multimodal behaviors. LREC Soumia Dermouche, Catherine Pelachaud
2018	B	`conf`	Is Two Better than One?: Effects of Multiple Agents on User Persuasion. IVA Reshmashree B. Kantharaju, Dominic De Franco, Alison Pease, Catherine Pelachaud
2018	A*	`conf`	MobiLimb: Augmenting Mobile Devices with a Robotic Limb. UIST Marc Teyssier, Gilles Bailly, Catherine Pelachaud, Eric Lecolinet
2018	—	`conf`	Modeling Human-agent Interaction. VISIGRAPP Catherine Pelachaud
2018	J	`jnl`	Perception of Emotions and Body Movement in the Emilya Database. IEEE Trans. Affect. Comput. Nesrine Fourati, Catherine Pelachaud
2018	B	`ed.`	Proceedings of the 18th International Conference on Intelligent Virtual Agents, IVA 2018, Sydney, NSW, Australia, November 05-08, 2018 IVA Anton Bogdanovych, Deborah Richards, Simeon Simoff, Catherine Pelachaud, Dirk Heylen, Tomas Trescak
2018	J	`jnl`	Topic management for an engaging conversational agent. Int. J. Hum. Comput. Stud. Nadine Glas, Catherine Pelachaud
2018	—	`conf`	Towards Developing a Model to Handle Multiparty Conversations for Healthcare Agents. ICAHGCA@AAMAS Reshmashree Bangalore Kantharaju, Catherine Pelachaud
2017	J	`jnl`	A User Perception-Based Approach to Create Smiling Embodied Conversational Agents. ACM Trans. Interact. Intell. Syst. Magalie Ochs, Catherine Pelachaud, Gary McKeown
2017	B	`conf`	Analyzing first impressions of warmth and competence from observable nonverbal cues in expert-novice interactions. ICMI Béatrice Biancardi, Angelo Cafaro, Catherine Pelachaud
2017	J	`jnl`	Animation of Natural Virtual Characters. IEEE Computer Graphics and Applications Michael Neff, Catherine Pelachaud
2017	J	`jnl`	Audio-Driven Laughter Behavior Controller. IEEE Trans. Affect. Comput. Yu Ding, Jing Huang, Catherine Pelachaud
2017	A	`conf`	Conversing with Social Agents That Smile and Laugh. INTERSPEECH Catherine Pelachaud
2017	—	`conf`	Could a virtual agent be warm and competent? investigating user's impressions of agent's non-verbal behaviours. ISIAA@ICMI Béatrice Biancardi, Angelo Cafaro, Catherine Pelachaud
2017	B	`conf`	Giving Emotional Contagion Ability to Virtual Agents in Crowds. IVA Amyr B. Fortes Neto, Catherine Pelachaud, Soraia Raupp Musse
2017	—	`conf`	Greta: a conversing socio-emotional agent. ISIAA@ICMI Catherine Pelachaud
2017	—	`conf`	Gérer les premières impressions de compétence et de chaleur à travers des indices non verbaux. RJCIA Béatrice Biancardi, Angelo Cafaro, Catherine Pelachaud
2017	J	`jnl`	Implementing and Evaluating a Laughing Virtual Character. ACM Trans. Internet Techn. Maurizio Mancini, Béatrice Biancardi, Florian Pecune, Giovanna Varni, Yu Ding, Catherine Pelachaud, Gualtiero Volpe, Antonio Camurri
2017	J	`jnl`	Inverse kinematics using dynamic joint parameters: inverse kinematics animation synthesis learnt from sub-divided motion micro-segments. Vis. Comput. Jing Huang, Marco Fratarcangeli, Yu Ding, Catherine Pelachaud
2017	J	`jnl`	Multi-Variate Gaussian-Based Inverse Kinematics. Comput. Graph. Forum Jing Huang, Qi Wang, Marco Fratarcangeli, Ke Yan, Catherine Pelachaud
2017	B	`conf`	Selecting and Expressing Communicative Functions in a SAIBA-Compliant Agent Framework. IVA Angelo Cafaro, Merijn Bruijnes, Jelte van Waterschoot, Catherine Pelachaud, Mariët Theune, Dirk Heylen
2017	—	`conf`	Survey and perspectives of social touch in HCI. IHM Marc Teyssier, Gilles Bailly, Éric Lecolinet, Catherine Pelachaud
2017	B	`conf`	The NoXi database: multimodal recordings of mediated novice-expert interactions. ICMI Angelo Cafaro, Johannes Wagner, Tobias Baur, Soumia Dermouche, Mercedes Torres, Catherine Pelachaud, Elisabeth André, Michel F. Valstar
2016	—	`conf`	"Hold My Hand, Baby": Understanding Engagement through the Illusion of Touch between Human and Agent. CHI Extended Abstracts David Jan Mercado, Gilles Bailly, Catherine Pelachaud
2016	J	`jnl`	Affective Interaction with a Virtual Character Through an fNIRS Brain-Computer Interface. Frontiers Comput. Neurosci. Gabor Aranyi, Florian Pecune, Fred Charles, Catherine Pelachaud, Marc Cavazza
2016	B	`conf`	Ask Alice: an artificial retrieval of information agent. ICMI Michel F. Valstar, Tobias Baur, Angelo Cafaro, Alexandru Ghitulescu, Blaise Potard, Johannes Wagner, Elisabeth André, Laurent Durieu, Matthew P. Aylett, Soumia Dermouche, Catherine Pelachaud, Eduardo Coutinho, Björn W. Schuller, Yue Zhang, Dirk Heylen, Mariët Theune, Jelte van Waterschoot
2016	B	`conf`	Evaluating Social Attitudes of a Virtual Tutor. IVA Florian Pecune, Angelo Cafaro, Magalie Ochs, Catherine Pelachaud
2016	—	`ch.`	Fostering User Engagement in Face-to-Face Human-Agent Interactions: A Survey. Toward Robotic Socially Believable Behaving Systems (II) Chloé Clavel, Angelo Cafaro, Sabrina Campano, Catherine Pelachaud
2016	C	`conf`	Perceiving attitudes expressed through nonverbal behaviors in immersive virtual environments. MIG Brian Ravenet, Elisabetta Bevacqua, Angelo Cafaro, Magalie Ochs, Catherine Pelachaud
2016	B	`ed.`	Proceedings of the 18th ACM International Conference on Multimodal Interaction, ICMI 2016, Tokyo, Japan, November 12-16, 2016 ICMI Yukiko I. Nakano, Elisabeth André, Toyoaki Nishida, Louis-Philippe Morency, Carlos Busso, Catherine Pelachaud
2016	A	`conf`	SOCRATES: from SOCial Relation to ATtitude ExpressionS. AAMAS Florian Pecune, Magalie Ochs, Stacy Marsella, Catherine Pelachaud
2016	B	`conf`	Sequence-based multimodal behavior modeling for social agents. ICMI Soumia Dermouche, Catherine Pelachaud
2016	J	`jnl`	The Effects of Interpersonal Attitude of a Group of Agents on User's Presence and Proxemics Behavior. ACM Trans. Interact. Intell. Syst. Angelo Cafaro, Brian Ravenet, Magalie Ochs, Hannes Högni Vilhjálmsson, Catherine Pelachaud
2016	A	`conf`	The Effects of Interrupting Behavior on Interpersonal Attitude and Engagement in Dyadic Interactions. AAMAS Angelo Cafaro, Nadine Glas, Catherine Pelachaud
2015	A	`conf`	"I like this painting too": When an ECA Shares Appreciations to Engage Users. AAMAS Sabrina Campano, Chloé Clavel, Catherine Pelachaud
2015	B	`conf`	An ECA expressing appreciations. ACII Sabrina Campano, Caroline Langlet, Nadine Glas, Chloé Clavel, Catherine Pelachaud
2015	B	`conf`	Building autonomous sensitive artificial listeners (Extended abstract). ACII Marc Schröder, Elisabetta Bevacqua, Roddy Cowie, Florian Eyben, Hatice Gunes, Dirk Heylen, Mark ter Maat, Gary McKeown, Sathish Pammi, Maja Pantic, Catherine Pelachaud, Björn W. Schuller, Etienne de Sevin, Michel F. Valstar, Martin Wöllmer
2015	B	`conf`	Conversational Behavior Reflecting Interpersonal Attitudes in Small Group Interactions. IVA Brian Ravenet, Angelo Cafaro, Béatrice Biancardi, Magalie Ochs, Catherine Pelachaud
2015	B	`conf`	Definitions of engagement in human-agent interaction. ACII Nadine Glas, Catherine Pelachaud
2015	B	`conf`	ECA Control using a Single Affective User Dimension. ICMI Fred Charles, Florian Pecune, Gabor Aranyi, Catherine Pelachaud, Marc Cavazza
2015	J	`jnl`	Emergence of synchrony in an Adaptive Interaction Model. CoRR Kevin Sanlaville, Gérard Assayag, Frédéric Bevilacqua, Catherine Pelachaud
2015	A	`conf`	Greta: an Interactive Expressive Embodied Conversational Agent. AAMAS Catherine Pelachaud
2015	—	`conf`	Invited Talk: Modeling Socio-Emotional Humanoid Agent. NODALIDA Catherine Pelachaud
2015	A*	`conf`	LOL - Laugh Out Loud. AAAI Florian Pecune, Béatrice Biancardi, Yu Ding, Catherine Pelachaud, Maurizio Mancini, Giovanna Varni, Antonio Camurri, Gualtiero Volpe
2015	A	`conf`	Laughing with a Virtual Agent. AAMAS Florian Pecune, Maurizio Mancini, Béatrice Biancardi, Giovanna Varni, Yu Ding, Catherine Pelachaud, Gualtiero Volpe, Antonio Camurri
2015	—	`conf`	Lip animation synthesis: a unified framework for speaking and laughing virtual agent. AVSP Yu Ding, Catherine Pelachaud
2015	B	`conf`	Multi-level classification of emotional body expression. FG Nesrine Fourati, Catherine Pelachaud
2015	B	`conf`	Perception of intensity incongruence in synthesized multimodal expressions of laughter. ACII Radoslaw Niewiadomski, Yu Ding, Maurizio Mancini, Catherine Pelachaud, Gualtiero Volpe, Antonio Camurri
2015	B	`conf`	Real-Time Visual Prosody for Interactive Virtual Agents. IVA Herwin van Welbergen, Yu Ding, Kai Sattler, Catherine Pelachaud, Stefan Kopp
2015	B	`conf`	Relevant body cues for the classification of emotional body expression in daily actions. ACII Nesrine Fourati, Catherine Pelachaud
2015	J	`jnl`	The Effect of Wrinkles, Presentation Mode, and Intensity on the Perception of Facial Actions and Full-Face Expressions of Laughter. ACM Trans. Appl. Percept. Radoslaw Niewiadomski, Catherine Pelachaud
2015	—	`conf`	Topic Transition Strategies for an Information-Giving Agent. ENLG Nadine Glas, Catherine Pelachaud
2015	B	`conf`	Towards a Socially Adaptive Virtual Agent. IVA Atef Ben Youssef, Mathieu Chollet, Hazaël Jones, Nicolas Sabouret, Catherine Pelachaud, Magalie Ochs
2014	B	`conf`	A Cognitive Model of Social Relations for Artificial Companions. IVA Florian Pecune, Magalie Ochs, Catherine Pelachaud
2014	A	`conf`	A computational model of social attitudes for a virtual recruiter. AAMAS Zoraida Callejas, Brian Ravenet, Magalie Ochs, Catherine Pelachaud
2014	B	`conf`	A model to generate adaptive multimodal job interviews with a virtual recruiter. LREC Zoraida Callejas, Brian Ravenet, Magalie Ochs, Catherine Pelachaud
2014	B	`conf`	Architecture of a socio-conversational agent in virtual worlds. ICIP Brian Ravenet, Magalie Ochs, Catherine Pelachaud
2014	—	`conf`	Collection and characterization of emotional body behaviors. MOCO Nesrine Fourati, Catherine Pelachaud
2014	B	`conf`	Compound Gesture Generation: A Model Based on Ideational Units. IVA Yuyu Xu, Catherine Pelachaud, Stacy Marsella
2014	B	`conf`	Emilya: Emotional body expression in daily actions database. LREC Nesrine Fourati, Catherine Pelachaud
2014	A	`conf`	Expressing social attitudes in virtual agents for social coaching. AAMAS Hazaël Jones, Mathieu Chollet, Magalie Ochs, Nicolas Sabouret, Catherine Pelachaud
2014	J	`jnl`	Expressing social attitudes in virtual agents for social training games. CoRR Nicolas Sabouret, Hazaël Jones, Magalie Ochs, Mathieu Chollet, Catherine Pelachaud
2014	B	`conf`	From Non-verbal Signals Sequence Mining to Bayesian Networks for Interpersonal Attitudes Expression. IVA Mathieu Chollet, Magalie Ochs, Catherine Pelachaud
2014	—	`conf`	Interacting with Socio-emotional Agents. IHCI Catherine Pelachaud
2014	B	`conf`	Interpersonal Attitude of a Speaking Agent in Simulated Group Conversations. IVA Brian Ravenet, Angelo Cafaro, Magalie Ochs, Catherine Pelachaud
2014	A	`conf`	Laughter animation synthesis. AAMAS Yu Ding, Ken Prepin, Jing Huang, Catherine Pelachaud, Thierry Artières
2014	B	`conf`	Mining a multimodal corpus for non-verbal behavior sequences conveying attitudes. LREC Mathieu Chollet, Magalie Ochs, Catherine Pelachaud
2014	—	`ed.`	Proceedings of the 7th International Conference on PErvasive Technologies Related to Assistive Environments, PETRA 2014, Island of Rhodes, Greece, May 27 - 30, 2014 PETRA Fillia Makedon, Mark Clements, Catherine Pelachaud, Vana Kalogeraki, Ilias Maglogiannis
2014	B	`conf`	Representing Communicative Functions in SAIBA with a Unified Function Markup Language. IVA Angelo Cafaro, Hannes Högni Vilhjálmsson, Timothy W. Bickmore, Dirk Heylen, Catherine Pelachaud
2014	B	`conf`	Rhythmic Body Movements of Laughter. ICMI Radoslaw Niewiadomski, Maurizio Mancini, Yu Ding, Catherine Pelachaud, Gualtiero Volpe
2014	B	`conf`	Upper Body Animation Synthesis for a Laughing Character. IVA Yu Ding, Jing Huang, Nesrine Fourati, Thierry Artières, Catherine Pelachaud
2013	B	`conf`	A Multimodal Corpus Approach to the Design of Virtual Recruiters. ACII Mathieu Chollet, Magalie Ochs, Chloé Clavel, Catherine Pelachaud
2013	B	`conf`	Beyond backchannels: co-construction of dyadic stancce by reciprocal reinforcement of smiles between virtual agents. CogSci Ken Prepin, Magalie Ochs, Catherine Pelachaud
2013	—	`book`	Emotion-Oriented Systems Catherine Pelachaud
2013	B	`conf`	From Emotions to Interpersonal Stances: Multi-level Analysis of Smiling Virtual Characters. ACII Magalie Ochs, Ken Prepin, Catherine Pelachaud
2013	B	`conf`	From a User-created Corpus of Virtual Agent's Non-verbal Behavior to a Computational Model of Interpersonal Attitudes. IVA Brian Ravenet, Magalie Ochs, Catherine Pelachaud
2013	—	`conf`	Head, Shoulders and Hips Behaviors during Turning. HBU Nesrine Fourati, Catherine Pelachaud
2013	B	`ed.`	Intelligent Virtual Agents - 13th International Conference, IVA 2013, Edinburgh, UK, August 29-31, 2013. Proceedings IVA Ruth Aylett, Brigitte Krenn, Catherine Pelachaud, Hiroshi Shimodaira
2013	—	`conf`	Laugh When You're Winning. eNTERFACE Maurizio Mancini, Laurent Ach, Emeline Bantegnie, Tobias Baur, Nadia Berthouze, Debajyoti Datta, Yu Ding, Stéphane Dupont, Harry J. Griffin, Florian Lingenfelser, Radoslaw Niewiadomski, Catherine Pelachaud, Olivier Pietquin, Bilal Piot, Jérôme Urbain, Gualtiero Volpe, Johannes Wagner
2013	—	`ch.`	Modeling Facial Expressions of Emotions. Emotion-Oriented Systems Sylwia Julia Hyniewska, Radoslaw Niewiadomski, Catherine Pelachaud
2013	B	`conf`	Modeling Multimodal Behaviors from Speech Prosody. IVA Yu Ding, Catherine Pelachaud, Thierry Artières
2013	—	`conf`	Social stances by virtual smiles. WIAMIS Magalie Ochs, Catherine Pelachaud, Ken Prepin
2013	J	`jnl`	Socially Aware Virtual Characters: The Social Signal of Smiles [Social Sciences]. IEEE Signal Process. Mag. Magalie Ochs, Catherine Pelachaud
2013	Misc	`conf`	Speech-driven eyebrow motion synthesis with contextual Markovian models. ICASSP Yu Ding, Mathieu Radenen, Thierry Artières, Catherine Pelachaud
2013	C	`conf`	The TARDIS Framework: Intelligent Virtual Agents for Social Coaching in Job Interviews. Advances in Computer Entertainment Keith Anderson, Elisabeth André, Tobias Baur, Sara Bernardini, Mathieu Chollet, Evi Chryssafidou, Ionut Damian, Cathy Ennis, Arjan Egges, Patrick Gebhard, Hazaël Jones, Magalie Ochs, Catherine Pelachaud, Kaska Porayska-Pomsta, Paola Rizzo, Nicolas Sabouret
2013	—	`conf`	Vers des Agents Conversationnels Animés Socio-Affectifs. IHM Magalie Ochs, Yu Ding, Nesrine Fourati, Mathieu Chollet, Brian Ravenet, Florian Pecune, Nadine Glas, Ken Prepin, Chloé Clavel, Catherine Pelachaud
2012	J	`jnl`	A formal model of emotions for an empathic rational dialog agent. Auton. Agents Multi Agent Syst. Magalie Ochs, David Sadek, Catherine Pelachaud
2012	J	`jnl`	A listener model: introducing personality traits. J. Multimodal User Interfaces Elisabetta Bevacqua, Etienne de Sevin, Sylwia Julia Hyniewska, Catherine Pelachaud
2012	B	`conf`	A multimodal fuzzy inference system using a continuous facial expression representation for emotion detection. ICMI Catherine Soladié, Hanan Salam, Catherine Pelachaud, Nicolas Stoiber, Renaud Séguier
2012	C	`conf`	An Efficient Energy Transfer Inverse Kinematics Solution. MIG Jing Huang, Catherine Pelachaud
2012	J	`jnl`	Bridging the Gap between Social Animal and Unsocial Machine: A Survey of Social Signal Processing. IEEE Trans. Affect. Comput. Alessandro Vinciarelli, Maja Pantic, Dirk Heylen, Catherine Pelachaud, Isabella Poggi, Francesca D'Errico, Marc Schröder
2012	J	`jnl`	Building Autonomous Sensitive Artificial Listeners. IEEE Trans. Affect. Comput. Marc Schröder, Elisabetta Bevacqua, Roddy Cowie, Florian Eyben, Hatice Gunes, Dirk Heylen, Mark ter Maat, Gary McKeown, Sathish Pammi, Maja Pantic, Catherine Pelachaud, Björn W. Schuller, Etienne de Sevin, Michel François Valstar, Martin Wöllmer
2012	J	`jnl`	Evaluation of Four Designed Virtual Agent Personalities. IEEE Trans. Affect. Comput. Margaret McRorie, Ian Sneddon, Gary McKeown, Elisabetta Bevacqua, Etienne de Sevin, Catherine Pelachaud
2012	B	`conf`	Expressive Body Animation Pipeline for Virtual Agent. IVA Jing Huang, Catherine Pelachaud
2012	A	`conf`	Live generation of interactive non-verbal behaviours. AAMAS Ken Prepin, Catherine Pelachaud
2012	A	`conf`	Model of the perception of smiling virtual character. AAMAS Magalie Ochs, Catherine Pelachaud
2012	—	`conf`	Mutual Stance Building in Dyad of Virtual Agents: Smile Alignment and Synchronisation. SocialCom/PASSAT Ken Prepin, Magalie Ochs, Catherine Pelachaud
2012	J	`jnl`	Preface. J. Multimodal User Interfaces Elisabeth André, Marc Cavazza, Catherine Pelachaud
2012	J	`jnl`	Smiling virtual agent in social context. Cogn. Process. Magalie Ochs, Radoslaw Niewiadomski, Paul M. Brunet, Catherine Pelachaud
2012	B	`conf`	Towards Multimodal Expression of Laughter. IVA Radoslaw Niewiadomski, Catherine Pelachaud
2012	J	`jnl`	Un modèle d'interlocuteur virtuel avec des comportements d'écoute crédibles. Tech. Sci. Informatiques Etienne de Sevin, Elisabetta Bevacqua, Sylwia Julia Hyniewska, Catherine Pelachaud
2011	—	`ed.`	Analysis of Verbal and Nonverbal Communication and Enactment. The Processing Issues - COST 2102 International Conference, Budapest, Hungary, September 7-10, 2010, Revised Selected Papers COST 2102 Conference Anna Esposito, Alessandro Vinciarelli, Klára Vicsi, Catherine Pelachaud, Anton Nijholt
2011	B	`conf`	Animating a Conversational Agent with User Expressivity. IVA Manoj Kumar Rajagopal, Patrick Horain, Catherine Pelachaud
2011	—	`conf`	Basics of Intersubjectivity Dynamics: Model of Synchrony Emergence When Dialogue Partners Understand Each Other. ICAART (Revised Selected Papers) Ken Prepin, Catherine Pelachaud
2011	B	`conf`	Come and have an emotional workout with sensitive artificial listeners! FG Marc Schröder, Sathish Pammi, Hatice Gunes, Maja Pantic, Michel François Valstar, Roddy Cowie, Gary McKeown, Dirk Heylen, Mark ter Maat, Florian Eyben, Björn W. Schuller, Martin Wöllmer, Elisabetta Bevacqua, Catherine Pelachaud, Etienne de Sevin
2011	J	`jnl`	Constraint-Based Model for Synthesis of Multimodal Sequential Expressions of Emotions. IEEE Trans. Affect. Comput. Radoslaw Niewiadomski, Sylwia Julia Hyniewska, Catherine Pelachaud
2011	—	`conf`	Cross-media agent platform. Web3D Radoslaw Niewiadomski, Mohammad Obaid, Elisabetta Bevacqua, Julian Looser, Le Quoc Anh, Catherine Pelachaud
2011	—	`conf`	Design and implementation of an expressive gesture model for a humanoid robot. Humanoids Le Quoc Anh, Souheil Hanoune, Catherine Pelachaud
2011	A	`conf`	Effect of time delays on agents' interaction dynamics. AAMAS Ken Prepin, Catherine Pelachaud
2011	—	`conf`	EmotionML - An Upcoming Standard for Representing Emotions and Related States. ACII (1) Marc Schröder, Paolo Baggia, Felix Burkhardt, Catherine Pelachaud, Christian Peter, Enrico Zovato
2011	—	`conf`	Expressive Gesture Model for Humanoid Robot. ACII (2) Le Quoc Anh, Catherine Pelachaud
2011	B	`conf`	Expressive Multimodal Conversational Acts for SAIBA Agents. IVA Jérémy Rivière, Carole Adam, Sylvie Pesty, Catherine Pelachaud, Nadine Guiraud, Dominique Longin, Emiliano Lorini
2011	—	`conf`	Generating Co-speech Gestures for the Humanoid Robot NAO through BML. Gesture Workshop Quoc Anh Le, Catherine Pelachaud
2011	J	`jnl`	How Is Believability of a Virtual Agent Related to Warmth, Competence, Personification, and Embodiment? Presence Teleoperators Virtual Environ. Virginie Demeure, Radoslaw Niewiadomski, Catherine Pelachaud
2011	—	`conf`	Interacting with Emotional Virtual Agents. INTETAIN Elisabetta Bevacqua, Florian Eyben, Dirk Heylen, Mark ter Maat, Sathish Pammi, Catherine Pelachaud, Marc Schröder, Björn W. Schuller, Etienne de Sevin, Martin Wöllmer
2011	—	`conf`	My Presenting Avatar. INTETAIN Laurent Ach, Laurent Durieu, Benoît Morel, Karine Chevreau, Hugues de Mazancourt, Bernard Normier, Catherine Pelachaud, André-Marie Pez
2011	B	`conf`	Perception of Spatial Relations and of Coexistence with Virtual Agents. IVA Mohammad Obaid, Radoslaw Niewiadomski, Catherine Pelachaud
2011	—	`conf`	Shared Understanding and Synchrony Emergence - Synchrony as an Indice of the Exchange of Meaning between Dialog Partners. ICAART (2) Ken Prepin, Catherine Pelachaud
2011	—	`ch.`	Social Signal Processing: The Research Agenda. Visual Analysis of Humans Maja Pantic, Roderick Cowie, Francesca D'Errico, Dirk Heylen, Marc Mehu, Catherine Pelachaud, Isabella Poggi, Marc Schröder, Alessandro Vinciarelli
2011	—	`conf`	Virtually Cloning Real Human with Motion Style. IHCI Manoj Kumar Rajagopal, Patrick Horain, Catherine Pelachaud
2010	J	`jnl`	AVLaughterCycle. J. Multimodal User Interfaces Jérôme Urbain, Radoslaw Niewiadomski, Elisabetta Bevacqua, Thierry Dutoit, Alexis Moinet, Catherine Pelachaud, Benjamin Picart, Joëlle Tilmanne, Johannes Wagner
2010	J	`jnl`	Affect expression in ECAs: Application to politeness displays. Int. J. Hum. Comput. Stud. Radoslaw Niewiadomski, Catherine Pelachaud
2010	J	`jnl`	Greta, une plateforme d'agent conversationnel expressif et interactif. Tech. Sci. Informatiques Etienne de Sevin, Radoslaw Niewiadomski, Elisabetta Bevacqua, André-Marie Pez, Maurizio Mancini, Catherine Pelachaud
2010	J	`jnl`	Guest Editors' Introduction: Digital Human Faces: From Creation to Emotion. IEEE Computer Graphics and Applications Catherine Pelachaud, Tamy Boubekeur
2010	J	`jnl`	Guest editorial of the special issue on intelligent virtual agents. Auton. Agents Multi Agent Syst. Stefan Kopp, Ruth Aylett, Jonathan Gratch, Patrick Olivier, Catherine Pelachaud
2010	B	`conf`	How a Virtual Agent Should Smile? - Morphological and Dynamic Characteristics of Virtual Agent's Smiles. IVA Magalie Ochs, Radoslaw Niewiadomski, Catherine Pelachaud
2010	B	`conf`	Influence of Personality Traits on Backchannel Selection. IVA Etienne de Sevin, Sylwia Julia Hyniewska, Catherine Pelachaud
2010	B	`ed.`	Intelligent Virtual Agents, 10th International Conference, IVA 2010, Philadelphia, PA, USA, September 20-22, 2010. Proceedings IVA Jan M. Allbeck, Norman I. Badler, Timothy W. Bickmore, Catherine Pelachaud, Alla Safonova
2010	B	`conf`	Multimodal Backchannels for Embodied Conversational Agents. IVA Elisabetta Bevacqua, Sathish Pammi, Sylwia Julia Hyniewska, Marc Schröder, Catherine Pelachaud
2010	B	`conf`	The AVLaughterCycle Database. LREC Jérôme Urbain, Elisabetta Bevacqua, Thierry Dutoit, Alexis Moinet, Radoslaw Niewiadomski, Catherine Pelachaud, Benjamin Picart, Joëlle Tilmanne, Johannes Wagner
2010	—	`conf`	Towards a Storytelling Humanoid Robot. AAAI Fall Symposium: Dialog with Robots Rodolphe Gelin, Christophe d'Alessandro, Quoc Anh Le, Olivier Deroo, David Doukhan, Jean-Claude Martin, Catherine Pelachaud, Albert Rilliard, Sophie Rosset
2010	—	`conf`	Towards a smiling ECA: studies on mimicry, timing and types of smiles. SSPW@MM Radoslaw Niewiadomski, Ken Prepin, Elisabetta Bevacqua, Magalie Ochs, Catherine Pelachaud
2010	B	`conf`	Warmth, Competence, Believability and Virtual Agents. IVA Radoslaw Niewiadomski, Virginie Demeure, Catherine Pelachaud
2009	B	`conf`	A Model of Personality and Emotional Traits. IVA Margaret McRorie, Ian Sneddon, Etienne de Sevin, Elisabetta Bevacqua, Catherine Pelachaud
2009	B	`conf`	A demonstration of audiovisual sensitive artificial listeners. ACII Marc Schröder, Elisabetta Bevacqua, Florian Eyben, Hatice Gunes, Dirk Heylen, Mark ter Maat, Sathish Pammi, Maja Pantic, Catherine Pelachaud, Björn W. Schuller, Etienne de Sevin, Michel F. Valstar, Martin Wöllmer
2009	B	`conf`	Evaluation of multimodal sequential expressions of emotions in ECA. ACII Radoslaw Niewiadomski, Sylwia Julia Hyniewska, Catherine Pelachaud
2009	A*	`conf`	Generating Robot/Agent backchannels during a storytelling experiment. ICRA Sames Al Moubayed, Malek Baklouti, Mohamed Chetouani, Thierry Dutoit, Ammar Mahdhaoui, Jean-Claude Martin, Stanislav Ondás, Catherine Pelachaud, Jérôme Urbain, Mehmet Yilmaz
2009	J	`jnl`	Generating distinctive behavior for Embodied Conversational Agents. J. Multimodal User Interfaces Maurizio Mancini, Catherine Pelachaud
2009	—	`conf`	Greta: an interactive expressive ECA system. AAMAS (2) Radoslaw Niewiadomski, Elisabetta Bevacqua, Maurizio Mancini, Catherine Pelachaud
2009	B	`conf`	Modeling Emotional Expressions as Sequences of Behaviors. IVA Radoslaw Niewiadomski, Sylwia Julia Hyniewska, Catherine Pelachaud
2009	B	`conf`	Real-Time Backchannel Selection for ECAs According to User's Level of Interest. IVA Etienne de Sevin, Catherine Pelachaud
2009	—	`conf`	Statistical Gesture Models for 3D Motion Capture from a Library of Gestures with Variants. Gesture Workshop Zhenbo Li, Patrick Horain, André-Marie Pez, Catherine Pelachaud
2009	J	`jnl`	Studies on gesture expressivity for a virtual agent. Speech Commun. Catherine Pelachaud
2008	B	`conf`	A Listening Agent Exhibiting Variable Behaviour. IVA Elisabetta Bevacqua, Maurizio Mancini, Catherine Pelachaud
2008	—	`conf`	An empathic virtual dialog agent to improve human-machine interaction. AAMAS (1) Magalie Ochs, Catherine Pelachaud, David Sadek
2008	—	`conf`	Distinctiveness in multimodal behaviors. AAMAS (1) Maurizio Mancini, Catherine Pelachaud
2008	—	`conf`	Emotional reading of medical texts using conversational agents. AAMAS (3) Gersende Georg, Catherine Pelachaud, Marc Cavazza
2008	B	`conf`	Expressions of Empathy in ECAs. IVA Radoslaw Niewiadomski, Magalie Ochs, Catherine Pelachaud
2008	—	`conf`	Multimodal Human Machine Interactions in Virtual and Augmented Reality. COST 2102 School (Vietri) Gérard Chollet, Anna Esposito, Annie Gentes, Patrick Horain, Walid Karam, Zhenbo Li, Catherine Pelachaud, Patrick Perrot, Dijana Petrovska-Delacrétaz, Dianle Zhou, Leila Zouari
2008	B	`conf`	The Next Step towards a Function Markup Language. IVA Dirk Heylen, Stefan Kopp, Stacy Marsella, Catherine Pelachaud, Hannes Högni Vilhjálmsson
2008	B	`conf`	Visualizing the Importance of Medical Recommendations with Conversational Agents. IVA Gersende Georg, Marc Cavazza, Catherine Pelachaud
2007	J	`jnl`	A Virtual Head Driven by Music Expressivity. IEEE Trans. Speech Audio Process. Maurizio Mancini, Roberto Bresin, Catherine Pelachaud
2007	J	`jnl`	A case study of gesture expressivity breaks. Lang. Resour. Evaluation Nicolas Ech Chafai, Catherine Pelachaud, Danielle Pelé
2007	—	`conf`	Affective Interactive Narrative in the CALLAS Project. International Conference on Virtual Storytelling Fred Charles, Samuel Lemercier, Thurid Vogt, Nikolaus Bee, Maurizio Mancini, Jérôme Urbain, Marc Price, Elisabeth André, Catherine Pelachaud, Marc Cavazza
2007	B	`conf`	An Empathic Rational Dialog Agent. ACII Magalie Ochs, Catherine Pelachaud, David Sadek
2007	—	`conf`	Des agents virtuels sociaux et émotionnels pour l'interaction humain-machine. IHM Nicolas Ech Chafai, Magalie Ochs, Christopher Peters, Maurizio Mancini, Elisabetta Bevacqua, Catherine Pelachaud
2007	B	`conf`	Dynamic Behavior Qualifiers for Conversational Agents. IVA Maurizio Mancini, Catherine Pelachaud
2007	B	`conf`	Fuzzy Similarity of Facial Expressions of Embodied Agents. IVA Radoslaw Niewiadomski, Catherine Pelachaud
2007	—	`conf`	Implementing Distinctive Behavior for Conversational Agents. Gesture Workshop Maurizio Mancini, Catherine Pelachaud
2007	B	`ed.`	Intelligent Virtual Agents, 7th International Conference, IVA 2007, Paris, France, September 17-19, 2007, Proceedings IVA Catherine Pelachaud, Jean-Claude Martin, Elisabeth André, Gérard Chollet, Kostas Karpouzis, Danielle Pelé
2007	B	`conf`	Model of Facial Expressions Management for an Embodied Conversational Agent. ACII Radoslaw Niewiadomski, Catherine Pelachaud
2007	B	`conf`	Searching for Prototypical Facial Feedback Signals. IVA Dirk Heylen, Elisabetta Bevacqua, Marion Tellier, Catherine Pelachaud
2007	B	`conf`	The Behavior Markup Language: Recent Developments and Challenges. IVA Hannes Högni Vilhjálmsson, Nathan Cantelmo, Justine Cassell, Nicolas Ech Chafai, Michael Kipp, Stefan Kopp, Maurizio Mancini, Stacy Marsella, Andrew N. Marshall, Catherine Pelachaud, Zsófia Ruttkay, Kristinn R. Thórisson, Herwin van Welbergen, Rick J. van der Werf
2007	B	`conf`	Towards the Specification of an ECA with Variants of Gestures. IVA Nicolas Ech Chafai, Catherine Pelachaud, Danielle Pelé
2007	J	`jnl`	Virtual agent multimodal mimicry of humans. Lang. Resour. Evaluation George Caridakis, Amaryllis Raouzaiou, Elisabetta Bevacqua, Maurizio Mancini, Kostas Karpouzis, Lori Malatesta, Catherine Pelachaud
2007	B	`conf`	What Should a Generic Emotion Markup Language Be Able to Represent? ACII Marc Schröder, Laurence Devillers, Kostas Karpouzis, Jean-Claude Martin, Catherine Pelachaud, Christian Peter, Hannes Pirker, Björn W. Schuller, Jianhua Tao, Ian Wilson
2006	J	`jnl`	Conception et évaluation d'un modèle d'expressivité pour les gestes des agents conversationnels. Rev. d'Intelligence Artif. Stéphanie Buisine, Björn Hartmann, Maurizio Mancini, Catherine Pelachaud
2006	J	`jnl`	Du corpus vidéo à l'agent expressif. Utilisation des différents niveaux de représentation multimodale et émotionnelle. Rev. d'Intelligence Artif. Jean-Claude Martin, Sarkis Abrilian, Laurence Devillers, Myriam Lamolle, Maurizio Mancini, Catherine Pelachaud
2006	—	`ed.`	Evaluating Embodied Conversational Agents, 14.03. - 19.03.2004 Evaluating Embodied Conversational Agents Zsófia Ruttkay, Elisabeth André, W. Lewis Johnson, Catherine Pelachaud
2006	J	`jnl`	Expressions intelligentes des émotions. Rev. d'Intelligence Artif. Magalie Ochs, Radoslaw Niewiadomski, Catherine Pelachaud, David Sadek
2006	—	`conf`	Facial Deception in Humans and ECAs. ZiF Workshop Isabella Poggi, Radoslaw Niewiadomski, Catherine Pelachaud
2006	B	`conf`	Gesture Expressivity Modulations in an ECA Application. IVA Nicolas Ech Chafai, Catherine Pelachaud, Danielle Pelé, Gaspard Breton
2006	J	`jnl`	Multimodal Complex Emotions: Gesture Expressivity and Blended Facial Expressions. Int. J. Humanoid Robotics Jean-Claude Martin, Radoslaw Niewiadomski, Laurence Devillers, Stéphanie Buisine, Catherine Pelachaud
2006	—	`conf`	Multimodal Sensing, Interpretation and Copying of Movements by a Virtual Agent. PIT Elisabetta Bevacqua, Amaryllis Raouzaiou, Christopher Peters, George Caridakis, Kostas Karpouzis, Catherine Pelachaud, Maurizio Mancini
2006	B	`conf`	Perception of Blended Emotions: From Video Corpus to Expressive Agent. IVA Stéphanie Buisine, Sarkis Abrilian, Radoslaw Niewiadomski, Jean-Claude Martin, Laurence Devillers, Catherine Pelachaud
2006	J	`jnl`	Representations for Multimodal Generation: A Workshop Report. AI Mag. Kristinn R. Thórisson, Hannes Högni Vilhjálmsson, Catherine Pelachaud, Stefan Kopp, Norman I. Badler, W. Lewis Johnson, Stacy Marsella, Brigitte Krenn
2006	B	`conf`	Towards a Common Framework for Multimodal Generation: The Behavior Markup Language. IVA Stefan Kopp, Brigitte Krenn, Stacy Marsella, Andrew N. Marshall, Catherine Pelachaud, Hannes Pirker, Kristinn R. Thórisson, Hannes Högni Vilhjálmsson
2006	B	`conf`	Virtual humanoids endowed with expressive communication gestures : the HuGEx project. SMC Nasser Rezzoug, Philippe Gorce, Alexis Héloir, Sylvie Gibet, Nicolas Courty, Jean-François Kamp, Franck Multon, Catherine Pelachaud
2005	B	`conf`	A Model of Attention and Interest Using Gaze Behavior. IVA Christopher Peters, Catherine Pelachaud, Elisabetta Bevacqua, Maurizio Mancini, Isabella Poggi
2005	—	`conf`	Contextual Factors and Adaptative Multimodal Human-Computer Interaction: Multi-level Specification of Emotion and Expressivity in Embodied Conversational Agents. CONTEXT Myriam Lamolle, Maurizio Mancini, Catherine Pelachaud, Sarkis Abrilian, Jean-Claude Martin, Laurence Devillers
2005	A	`conf`	Design and evaluation of expressive gesture synthesis for embodied conversational agents. AAMAS Björn Hartmann, Maurizio Mancini, Stéphanie Buisine, Catherine Pelachaud
2005	A	`conf`	Expressive avatars in MPEG-4. ICME Maurizio Mancini, Björn Hartmann, Catherine Pelachaud, Amaryllis Raouzaiou, Kostas Karpouzis
2005	—	`conf`	From Acoustic Cues to an Expressive Agent. Gesture Workshop Maurizio Mancini, Roberto Bresin, Catherine Pelachaud
2005	—	`conf`	Implementing Expressive Gesture Synthesis for Embodied Conversational Agents. Gesture Workshop Björn Hartmann, Maurizio Mancini, Catherine Pelachaud
2005	B	`conf`	Intelligent Expressions of Emotions. ACII Magalie Ochs, Radoslaw Niewiadomski, Catherine Pelachaud, David Sadek
2005	B	`conf`	Levels of Representation in the Annotation of Emotion for the Specification of Expressivity in ECAs. IVA Jean-Claude Martin, Sarkis Abrilian, Laurence Devillers, Myriam Lamolle, Maurizio Mancini, Catherine Pelachaud
2005	A*	`conf`	Multimodal expressive embodied conversational agents. ACM Multimedia Catherine Pelachaud
2004	—	`conf`	04121 Abstracts Collection -- Evaluating Embodied Conversational Agents. Evaluating Embodied Conversational Agents Zsófia Ruttkay, Elisabeth André, W. Lewis Johnson, Catherine Pelachaud
2004	—	`ch.`	APML, a Markup Language for Believable Behavior Generation. Life-like characters Berardina De Carolis, Catherine Pelachaud, Isabella Poggi, Mark Steedman
2004	—	`conf`	An Audio-Visual Imposture Scenario by Talking Face Animation. Summer School on Neural Networks Walid Karam, Chafic Mokbel, Hanna Greige, Guido Aversano, Catherine Pelachaud, Gérard Chollet
2004	A	`conf`	Embodied Conversational Agents and Influences. ECAI Vincent Maya, Myriam Lamolle, Catherine Pelachaud
2004	J	`jnl`	Expressive audio-visual speech. Comput. Animat. Virtual Worlds Elisabetta Bevacqua, Catherine Pelachaud
2004	—	`book`	From Brows to Trust - Evaluating Embodied Conversational Agents From Brows to Trust Zsófia Ruttkay, Catherine Pelachaud
2004	A	`conf`	Influences and Embodied Conversational Agents. AAMAS Vincent Maya, Myriam Lamolle, Catherine Pelachaud
2003	—	`conf`	Computational Model of Believable Conversational Agents. Communication in Multiagent Systems Catherine Pelachaud, Massimo Bilvi
2003	J	`jnl`	From Greta's mind to her face: modelling the dynamics of affective states in a conversational embodied agent. Int. J. Hum. Comput. Stud. Fiorella de Rosis, Catherine Pelachaud, Isabella Poggi, Valeria Carofiglio, Berardina De Carolis
2003	—	`conf`	Gestural Mind Markers in ECAs. Gesture Workshop Isabella Poggi, Catherine Pelachaud, Emanuela Magno Caldognetto
2003	A	`conf`	Gestural mind markers in ECAs. AAMAS Isabella Poggi, Catherine Pelachaud, Emanuela Magno Caldognetto
2003	J	`jnl`	MagiCster: Believable Agents and Dialogue. Künstliche Intell. Colin Matheson, Catherine Pelachaud, Fiorella de Rosis, Thomas Rist
2003	B	`conf`	Modelling Gaze Behaviour for Conversational Agents. IVA Catherine Pelachaud, Massimo Bilvi
2003	—	`conf`	Multimodal user interfaces for a travel assistant. IHM Alain Goyé, Eric Lecolinet, Shiuan-Sung Lin, Gérard Chollet, Catherine Pelachaud, Xiaoqing Ding, Yang Ni
2003	—	`conf`	Towards a Simulation of Conversations with Expressive Embodied Speakers and Listeners. CASA Thomas Rist, Markus Schmitt, Catherine Pelachaud, Massimo Bilvi
2003	—	`conf`	Triphone-based coarticulation model. AVSP Elisabetta Bevacqua, Catherine Pelachaud
2002	A	`conf`	Embodied contextual agent in information delivering application. AAMAS Catherine Pelachaud, Valeria Carofiglio, Berardina De Carolis, Fiorella de Rosis, Isabella Poggi
2002	—	`conf`	Formational Parameters and Adaptive Prototype Instantiation for MPEG-4 Compliant Gesture Synthesis. CA Björn Hartmann, Maurizio Mancini, Catherine Pelachaud
2002	B	`conf`	From Discourse Plans to Believable Behavior Generation. INLG Berardina De Carolis, Valeria Carofiglio, Catherine Pelachaud
2002	J	`jnl`	Multimodal embodied agents. Knowl. Eng. Rev. Catherine Pelachaud, Isabella Poggi
2002	J	`jnl`	Subtleties of facial expressions in embodied agents. Comput. Animat. Virtual Worlds Catherine Pelachaud, Isabella Poggi
2001	—	`conf`	A reflexive, not impulsive agent. Agents Catherine Pelachaud, Isabella Poggi, Berardina De Carolis, Fiorella de Rosis
2001	A	`conf`	An approach to an Italian talking head. INTERSPEECH Catherine Pelachaud, Emanuela Magno Caldognetto, Claudio Zmarich, Piero Cosi
2001	A*	`conf`	Behavior Planning for a Reflexive Agent. IJCAI Berardina De Carolis, Catherine Pelachaud, Isabella Poggi, Fiorella de Rosis
2001	—	`conf`	Modelling an Italian talking head. AVSP Catherine Pelachaud, Emanuela Magno Caldognetto, Claudio Zmarich, Piero Cosi
2000	—	`conf`	Contextually Embodied Agents. DEFORM/AVATARS Catherine Pelachaud
2000	J	`jnl`	Eye Communication in a Conversational 3D Synthetic Agent. AI Commun. Isabella Poggi, Catherine Pelachaud, Fiorella de Rosis
1999	—	`conf`	Emotional Meaning and Expression in Animated Faces. IWAI Isabella Poggi, Catherine Pelachaud
1998	B	`conf`	Multimodal communication between synthetic agents. AVI Catherine Pelachaud, Isabella Poggi
1998	J	`jnl`	Performative faces. Speech Commun. Isabella Poggi, Catherine Pelachaud
1997	—	`conf`	Context sensitive faces. AVSP Isabella Poggi, Catherine Pelachaud
1996	J	`jnl`	Generating Facial Expressions for Speech. Cogn. Sci. Catherine Pelachaud, Norman I. Badler, Mark Steedman
1996	B	`conf`	Simulation of face-to-face interaction. AVI Catherine Pelachaud
1995	—	`conf`	Coordinating Vocal and Visual Parameters for 3D Virtual Agents. Virtual Environments Catherine Pelachaud, Scott Prevost
1995	—	`conf`	Synthesizing Cooperative Conversation. Multimodal Human-Computer Communication Catherine Pelachaud, Justine Cassell, Norman I. Badler, Mark Steedman, Scott Prevost, Matthew Stone
1994	A*	`conf`	Animated conversation: rule-based generation of facial expression, gesture & spoken intonation for multiple conversational agents. SIGGRAPH Justine Cassell, Catherine Pelachaud, Norman I. Badler, Mark Steedman, Brett Achorn, Tripp Becket, Brett Douville, Scott Prevost, Matthew Stone
1994	—	`conf`	Modeling and animating the human tongue during speech production. CA Catherine Pelachaud, Cornelius W. A. M. van Overveld, Chin Seah
1994	—	`conf`	Sight and sound: generating facial expressions and spoken intonation from context. SSW Catherine Pelachaud, Scott Prevost
1993	A*	`conf`	Rule-Structured Facial Animation System. IJCAI Catherine Pelachaud, Marie-Luce Viaud, Hussein M. Yahia
1992	B	`conf`	Functional Decomposition of Facial Expressions for an Animation System. Advanced Visual Interfaces Catherine Pelachaud