** Call for Participation ** SemDial 2021 – PotsDial THE 25th WORKSHOP ON THE SEMANTICS AND PRAGMATICS OF DIALOGUE 20-22 September, University of Potsdam Potsdam, Germany PotsDial will be the 25th edition of the SemDial workshop series, which aims to bring together researchers working on the semantics and pragmatics of dialogue in fields such as formal semantics and pragmatics, computational linguistics, artificial intelligence, philosophy, psychology, and neuroscience. In 2021 the workshop will be hosted by the Department of Linguistics at the University of Potsdam, Germany, in a hybrid format: All talk and poster sessions will be accessible online (via videoconferencing) as well as in person in Potsdam. Registration is now open via the workshop website. Participation is free this year, but you still need to register (before Sep 18th). *WEBSITE:* https://semdial2021.ling.uni-potsdam.de/ *INVITED SPEAKERS:* - Ryuichiro Higashinaka (Nagoya University) - Ruth Kempson (Emeritus Professor of Linguistics at King’s College London) - Stefan Kopp (Bielefeld University) *ACCEPTED PAPERS* - Yuya Chiba, Yoshihiro Yamazaki and Akinori Ito: Speaker Intimacy in Chat-Talks: Analysis and Recognition based on Verbal and Non-Verbal Information - Jing Yang Lee, Kong Aik Lee and Woon Seng Gan: Generating Personalized Dialogue via Multi-Task Meta-Learning - Arabella Sinclair and Raquel Fernández: Construction Coordination in First and Second Language Acquisition - Na Li, John D Kelleher and Robert Ross: Detecting Interlocutor Confusion in Situated Human-Avatar Dialogue: A Pilot Study - Christine Howes, Ellen Breitholtz, Mary Lavelle and Robin Cooper: Justifiable reasons for everyone: Dialogical reasoning in patients with schizophrenia - Denis Ioussef, Ellen Breitholtz and Christine Howes: Don't you think that a rhetorical question can convey an argument? - Alafate Abulimiti, Jonathan Ginzburg and Justine Cassell: "By the way, do you like Spider Man?" --- A Social Planning Model towards Rapport - Simon Dobnik and Vera Silfversparre: The red cup on the left: reference, coreference and attention in visual dialogue - Staffan Larsson: The role of definitions in coordinating on perceptual meanings - Vladislav Maraev, Bill Noble, Chiara Mazzocconi and Christine Howes: Dialogue act classification is a laughing matter - Claire Bonial, Mitchell Abrams, Anthony L. Baker, Taylor Hudson, Stephanie Lukin, David Traum and Clare R. Voss: Context Is Key: Annotating Situated Dialogue Relations in Multi-floor Dialogue - Vesela Simeonova: Challenging evidential non-challengeability - Mathias Barthel: Speech planning interferes with language comprehension: Evidence from semantic illusions in question-response sequences - Bill Noble, Kate Viloria, Staffan Larsson and Asad Sayeed: What do you mean by negotiation? Annotating social media discussions about word meaning - José David Lopes and Helen Hastie: The Language of Persuasion, Negotiation and Trust (Call for posters is still active; see website.) *TECHNICAL PROGRAMME CHAIRS:* Ellen Breitholtz (University of Gothenburg) Kallirroi Georgila (University of Southern California) *LOCAL ORGANISATION:* Jana Götze (University of Potsdam) David Schlangen (University of Potsdam) *SEMDIAL BOARD CHAIRS:* Ellen Breitholtz (University of Gothenburg) Julian Hough (Queen Mary University of London) https://semdial2021.ling.uni-potsdam.de/