Lecture Notes in Artificial Intelligence 12975

Subseries of Lecture Notes in Computer Science

Series Editors

Randy GoebelUniversity of Alberta, Edmonton, Canada

Yuzuru TanakaHokkaido University, Sapporo, Japan

Wolfgang WahlsterDFKI and Saarland University, Saarbrücken, Germany

Founding Editor

Jörg SiekmannDFKI and Saarland University, Saarbrücken, Germany

More information about this subseries at http://www.springer.com/series/1244

Nuria Oliver • Fernando Pérez-Cruz •

Stefan Kramer • Jesse Read •

Jose A. Lozano (Eds.)

Machine Learning andKnowledge Discoveryin DatabasesResearch Track

European Conference, ECML PKDD 2021Bilbao, Spain, September 13–17, 2021Proceedings, Part I

123

EditorsNuria OliverELLIS - The European Laboratoryfor Learning and Intelligent SystemsAlicante, Spain

Avda Universidad, San Vicente del RaspeigAlicante, Spain

Vodafone Institute for Societyand CommunicationsBerlin, Germany

Data-Pop AllianceNew York, USA

Fernando Pérez-CruzETHZ and EPFLZürich, Switzerland

Stefan KramerJohannes Gutenberg University of MainzMainz, Germany

Jesse ReadÉcole PolytechniquePalaiseau, France

Jose A. LozanoBasque Center for Applied MathematicsBilbao, Spain

ISSN 0302-9743 ISSN 1611-3349 (electronic)Lecture Notes in Artificial IntelligenceISBN 978-3-030-86485-9 ISBN 978-3-030-86486-6 (eBook)https://doi.org/10.1007/978-3-030-86486-6

LNCS Sublibrary: SL7 – Artificial Intelligence

© Springer Nature Switzerland AG 2021This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of thematerial is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation,broadcasting, reproduction on microfilms or in any other physical way, and transmission or informationstorage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology nowknown or hereafter developed.The use of general descriptive names, registered names, trademarks, service marks, etc. in this publicationdoes not imply, even in the absence of a specific statement, that such names are exempt from the relevantprotective laws and regulations and therefore free for general use.The publisher, the authors and the editors are safe to assume that the advice and information in this book arebelieved to be true and accurate at the date of publication. Neither the publisher nor the authors or the editorsgive a warranty, expressed or implied, with respect to the material contained herein or for any errors oromissions that may have been made. The publisher remains neutral with regard to jurisdictional claims inpublished maps and institutional affiliations.

This Springer imprint is published by the registered company Springer Nature Switzerland AGThe registered company address is: Gewerbestrasse 11, 6330 Cham, Switzerland

Preface

This edition of the European Conference on Machine Learning and Principles andPractice of Knowledge Discovery in Databases (ECML PKDD 2021) has still beenaffected by the COVID-19 pandemic. Unfortunately it had to be held online and wecould only meet each other virtually. However, the experience gained in the previousedition joined to the knowledge collected from other virtual conferences allowed us toprovide an attractive and engaging agenda.

ECML PKDD is an annual conference that provides an international forum for thelatest research in all areas related to machine learning and knowledge discovery indatabases, including innovative applications. It is the leading European machinelearning and data mining conference and builds upon a very successful series ofECML PKDD conferences. Scheduled to take place in Bilbao, Spain, ECML PKDD2021 was held fully virtually, during September 13–17, 2021. The conference attractedover 1000 participants from all over the world. More generally, the conference receivedsubstantial attention from industry through sponsorship, participation, and also theindustry track.

The main conference program consisted of presentations of 210 accepted conferencepapers, 40 papers accepted in the journal track and 4 keynote talks: Jie Tang (TsinghuaUniversity), Susan Athey (Stanford University), Joaquin Quiñonero Candela (Face-book), and Marta Kwiatkowska (University of Oxford). In addition, there were 22workshops, 8 tutorials, 2 combined workshop-tutorials, the PhD forum, and the dis-covery challenge. Papers presented during the three main conference days wereorganized in three different tracks:

– Research Track: research or methodology papers from all areas in machine learning,knowledge discovery, and data mining.

– Applied Data Science Track: papers on novel applications of machine learning, datamining, and knowledge discovery to solve real-world use cases, thereby bridgingthe gap between practice and current theory.

– Journal Track: papers that were published in special issues of the Springer journalsMachine Learning and Data Mining and Knowledge Discovery.

We received a similar number of submissions to last year with 685 and 220 sub-missions for the Research and Applied Data Science Tracks respectively. We accepted146 (21%) and 64 (29%) of these. In addition, there were 40 papers from the JournalTrack. All in all, the high-quality submissions allowed us to put together an excep-tionally rich and exciting program.

The Awards Committee selected research papers that were considered to be ofexceptional quality and worthy of special recognition:

– Best (Student) Machine Learning Paper Award: Reparameterized Sampling forGenerative Adversarial Networks, by Yifei Wang, Yisen Wang, Jiansheng Yangand Zhouchen Lin.

– First Runner-up (Student) Machine Learning Paper Award: “Continual Learningwith Dual Regularizations”, by Xuejun Han and Yuhong Guo.

– Best Applied Data Science Paper Award: “Open Data Science to fight COVID-19:Winning the 500k XPRIZE Pandemic Response Challenge”, by Miguel AngelLozano, Oscar Garibo, Eloy Piñol, Miguel Rebollo, Kristina Polotskaya, MiguelAngel Garcia-March, J. Alberto Conejero, Francisco Escolano and Nuria Oliver.

– Best Student Data Mining Paper Award: “Conditional Neural Relational Inferencefor Interacting Systems”, by Joao Candido Ramos, Lionel Blondé, StéphaneArmand and Alexandros Kalousis.

– Test of Time Award for highest-impact paper from ECML PKDD 2011: “Influenceand Passivity in Social Media”, by Daniel M. Romero, Wojciech Galuba, SitaramAsur and Bernardo A. Huberman.

We would like to wholeheartedly thank all participants, authors, Program Com-mittee members, area chairs, session chairs, volunteers, co-organizers, and organizersof workshops and tutorials for their contributions that helped make ECML PKDD 2021a great success. We would also like to thank the ECML PKDD Steering Committee andall sponsors.

September 2021 Jose A. LozanoNuria Oliver

Fernando Pérez-CruzStefan Kramer

Jesse ReadYuxiao Dong

Nicolas KourtellisBarbara Hammer

vi Preface

Organization

General Chair

Jose A. Lozano Basque Center for Applied Mathematics, Spain

Research Track Program Chairs

Nuria Oliver Vodafone Institute for Society and Communications,Germany, and Data-Pop Alliance, USA

Fernando Pérez-Cruz Swiss Data Science Center, SwitzerlandStefan Kramer Johannes Gutenberg Universität Mainz, GermanyJesse Read École Polytechnique, France

Applied Data Science Track Program Chairs

Yuxiao Dong Facebook AI, Seattle, USANicolas Kourtellis Telefonica Research, Barcelona, SpainBarbara Hammer Bielefeld University, Germany

Journal Track Chairs

Sergio Escalera Universitat de Barcelona, SpainHeike Trautmann University of Münster, GermanyAnnalisa Appice Università degli Studi di Bari, ItalyJose A. Gámez Universidad de Castilla-La Mancha, Spain

Discovery Challenge Chairs

Paula Brito Universidade do Porto, PortugalDino Ienco Université Montpellier, France

Workshop and Tutorial Chairs

Alipio Jorge Universidade do Porto, PortugalYun Sing Koh University of Auckland, New Zealand

Industrial Track Chairs

Miguel Veganzones Sherpa.ia, PortugalSabri Skhiri EURA NOVA, Belgium

Award Chairs

Myra Spiliopoulou Otto-von-Guericke-University Magdeburg, GermanyJoão Gama University of Porto, Portugal

PhD Forum Chairs

Jeronimo Hernandez University of Barcelona, SpainZahra Ahmadi Johannes Gutenberg Universität Mainz, Germany

Production, Publicity, and Public Relations Chairs

Sophie Burkhardt Johannes Gutenberg Universität Mainz, GermanyJulia Sidorova Universidad Complutense de Madrid, Spain

Local Chairs

Iñaki Inza University of the Basque Country, SpainAlexander Mendiburu University of the Basque Country, SpainSantiago Mazuelas Basque Center for Applied Mathematics, SpainAritz Pèrez Basque Center for Applied Mathematics, SpainBorja Calvo University of the Basque Country, Spain

Proceedings Chair

Tania Cerquitelli Politecnico di Torino, Italy

Sponsorship Chair

Santiago Mazuelas Basque Center for Applied Mathematics, Spain

Web Chairs

Olatz HernandezAretxabaleta

Basque Center for Applied Mathematics, Spain

Estíbaliz Gutièrrez Basque Center for Applied Mathematics, Spain

ECML PKDD Steering Committee

Andrea Passerini University of Trento, ItalyFrancesco Bonchi ISI Foundation, ItalyAlbert Bifet Télécom ParisTech, FranceSašo Džeroski Jožef Stefan Institute, SloveniaKatharina Morik TU Dortmund, GermanyArno Siebes Utrecht University, The NetherlandsSiegfried Nijssen Université Catholique de Louvain, Belgium

viii Organization

Luís Moreira-Matias Finiata GmbH, GermanyAlessandra Sala Shutterstock, IrelandGeorgiana Ifrim University College Dublin, IrelandThomas Gärtner University of Nottingham, UKNeil Hurley University College Dublin, IrelandMichele Berlingerio IBM Research, IrelandElisa Fromont Université de Rennes, FranceArno Knobbe Universiteit Leiden, The NetherlandsUlf Brefeld Leuphana Universität Lüneburg, GermanyAndreas Hotho Julius-Maximilians-Universität Würzburg, GermanyIra Assent Aarhus University, DenmarkKristian Kersting TU Darmstadt University, GermanyJefrey Lijffijt Ghent University, BelgiumIsabel Valera Saarland University, Germany

Program Committee

Guest Editorial Board, Journal Track

Richard Allmendinger University of ManchesterMarie Anastacio Leiden UniversityAna Paula Appel IBM Research BrazilDennis Assenmacher University of MünsterIra Assent Aarhus UniversityMartin Atzmueller Osnabrueck UniversityJaume Bacardit Newcastle UniversityAnthony Bagnall University of East AngliaMitra Baratchi University of TwenteSrikanta Bedathur IIT DelhiAlessio Benavoli CSISViktor Bengs Paderborn UniversityMassimo Bilancia University of Bari “Aldo Moro”Klemens Böhm Karlsruhe Institute of TechnologyVeronica Bolon Canedo Universidade da CorunaIlaria Bordino UniCredit R&DJakob Bossek University of AdelaideUlf Brefeld Leuphana Universität LuneburgMichelangelo Ceci Universita degli Studi di Bari “Aldo Moro”Loïc Cerf Universidade Federal de Minas GeraisVictor Manuel Cerqueira University of PortoLaetitia Chapel IRISASilvia Chiusano Politecnico di TorinoRoberto Corizzo American University, Washington D.C.Marco de Gemmis Università degli Studi di Bari “Aldo Moro”Sébastien Destercke Università degli Studi di Bari “Aldo Moro”Shridhar Devamane Visvesvaraya Technological University

Organization ix

Carlotta Domeniconi George Mason UniversityWouter Duivesteijn Eindhoven University of TechnologyTapio Elomaa Tampere University of TechnologyHugo Jair Escalante INAOENicola Fanizzi Università degli Studi di Bari “Aldo Moro”Stefano Ferilli Università degli Studi di Bari “Aldo Moro”Pedro Ferreira Universidade de LisboaCesar Ferri Valencia Polytechnic UniversityJulia Flores University of Castilla-La ManchaGermain Forestier Université de Haute AlsaceMarco Frasca University of MilanRicardo J. G. B. Campello University of NewcastleEsther Galbrun University of Eastern FinlandJoão Gama University of PortoPaolo Garza Politecnico di TorinoPascal Germain Université LavalFabian Gieseke University of MünsterJosif Grabocka University of HildesheimGianluigi Greco University of CalabriaRiccardo Guidotti University of PisaFrancesco Gullo UniCreditStephan Günnemann Technical University of MunichTias Guns Vrije Universiteit BrusselAntonella Guzzo University of CalabriaAlexander Hagg Hochschule Bonn-Rhein-Sieg University of Applied

SciencesJin-Kao Hao University of AngersDaniel Hernández-Lobato Universidad Autónoma de MadridJose Hernández-Orallo Universitat Politècnica de ValènciaMartin Holena Institute of Computer Science, Academy of Sciences

of the Czech RepublicJaakko Hollmén Aalto UniversityDino Ienco IRSTEAGeorgiana Ifrim University College DublinFelix Iglesias TU WienAngelo Impedovo University of Bari “Aldo Moro”Mahdi Jalili RMIT UniversityNathalie Japkowicz University of OttawaSzymon Jaroszewicz Institute of Computer Science, Polish Academy

of SciencesMichael Kamp Monash UniversityMehdi Kaytoue InfologicPascal Kerschke University of MünsterDragi Kocev Jozef Stefan InstituteLars Kotthoff University of WyomingTipaluck Krityakierne University of Bern

x Organization

Peer Kröger Ludwig Maximilian University of MunichMeelis Kull University of TartuMichel Lang TU Dortmund UniversityHelge Langseth Norwegian University of Science and TechnologyOswald Lanz FBKMark Last Ben-Gurion University of the NegevKangwook Lee University of Wisconsin-MadisonJurica Levatic IRB BarcelonaThomar Liebig TU DortmundHsuan-Tien Lin National Taiwan UniversityMarius Lindauer Leibniz University HannoverMarco Lippi University of Modena and Reggio EmiliaCorrado Loglisci Università degli Studi di BariManuel Lopez-Ibanez University of MalagaNuno Lourenço University of CoimbraClaudio Lucchese Ca’ Foscari University of VeniceBrian Mac Namee University College DublinGjorgji Madjarov Ss. Cyril and Methodius UniversityDavide Maiorca University of CagliariGiuseppe Manco ICAR-CNRElena Marchiori Radboud UniversityElio Masciari Università di Napoli Federico IIAndres R. Masegosa Norwegian University of Science and TechnologyErnestina Menasalvas Universidad Politécnica de MadridRosa Meo University of TorinoPaolo Mignone University of Bari “Aldo Moro”Anna Monreale University of PisaGiovanni Montana University of WarwickGrègoire Montavon TU BerlinKatharina Morik TU DortmundAnimesh Mukherjee Indian Institute of Technology, KharagpurAmedeo Napoli LORIA NancyFrank Naumann University of AdelaideThomas Dyhre Aalborg UniversityBruno Ordozgoiti Aalto UniversityRita P. Ribeiro University of PortoPance Panov Jozef Stefan InstituteApostolos Papadopoulos Aristotle University of ThessalonikiPanagiotis Papapetrou Stockholm UniversityAndrea Passerini University of TrentoMykola Pechenizkiy Eindhoven University of TechnologyCharlotte Pelletier Université Bretagne SudRuggero G. Pensa University of TorinoNico Piatkowski TU DortmundDario Piga IDSIA Dalle Molle Institute for Artificial Intelligence

Research - USI/SUPSI

Organization xi

Gianvito Pio Università degli Studi di Bari “Aldo Moro”Marc Plantevit LIRIS - Université Claude Bernard Lyon 1Marius Popescu University of BucharestRaphael Prager University of MünsterMike Preuss Universiteit LeidenJose M. Puerta Universidad de Castilla-La ManchaKai Puolamäki University of HelsinkiChedy Raïssi InriaJan Ramon InriaMatteo Riondato Amherst CollegeThomas A. Runkler Siemens Corporate TechnologyAntonio Salmerón University of AlmeríaJoerg Sander University of AlbertaRoberto Santana University of the Basque CountryMichael Schaub RWTH AachenLars Schmidt-Thieme University of HildesheimSantiago Segui Universitat de BarcelonaThomas Seidl Ludwig-Maximilians-Universitaet MuenchenMoritz Seiler University of MünsterShinichi Shirakawa Yokohama National UniversityJim Smith University of the West of EnglandCarlos Soares University of PortoGerasimos Spanakis Maastricht UniversityGiancarlo Sperlì University of Naples Federico IIMyra Spiliopoulou Otto-von-Guericke-University MagdeburgGiovanni Stilo Università degli Studi dell’AquilaCatalin Stoean University of CraiovaMahito Sugiyama National Institute of InformaticsNikolaj Tatti University of HelsinkiAlexandre Termier Université de Rennes 1Kevin Tierney Bielefeld UniversityLuis Torgo University of PortoRoberto Trasarti CNR PisaSébastien Treguer InriaLeonardo Trujillo Instituto Tecnológico de TijuanaIvor Tsang University of Technology SydneyGrigorios Tsoumakas Aristotle University of ThessalonikiSteffen Udluft SiemensArnaud Vandaele Université de MonsMatthijs van Leeuwen Leiden UniversityCeline Vens KU Leuven KulakHerna Viktor University of OttawaMarco Virgolin Centrum Wiskunde & InformaticaJordi Vitrià Universitat de BarcelonaChristel Vrain LIFO – University of OrléansJilles Vreeken Helmholtz Center for Information Security

xii Organization

Willem Waegeman Ghent UniversityDavid Walker University of PlymouthHao Wang Leiden UniversityElizabeth F. Wanner CEFETTu Wei-Wei 4paradigmPascal Welke University of BonnMarcel Wever Paderborn UniversityMan Leung Wong Lingnan UniversityStefan Wrobel Fraunhofer IAIS, University of BonnZheng Ying InriaGuoxian Yu Shandong UniversityXiang Zhang Harvard UniversityYe Zhu Deakin UniversityArthur Zimek University of Southern DenmarkAlbrecht Zimmermann Université Caen NormandieMarinka Zitnik Harvard University

Area Chairs, Research Track

Fabrizio Angiulli University of CalabriaRicardo Baeza-Yates Universitat Pompeu FabraRoberto Bayardo GoogleBettina Berendt Katholieke Universiteit LeuvenPhilipp Berens University of TübingenMichael Berthold University of KonstanzHendrik Blockeel Katholieke Universiteit LeuvenJuergen Branke University of WarwickUlf Brefeld Leuphana University LüneburgToon Calders Universiteit AntwerpenMichelangelo Ceci Università degli Studi di Bari “Aldo Moro”Duen Horng Chau Georgia Institute of TechnologyNicolas Courty Université Bretagne Sud, IRISA Research Institute

Computer and Systems AléatoiresBruno Cremilleux Université de Caen NormandiePhilippe Cudre-Mauroux University of FribourgJames Cussens University of BristolJesse Davis Katholieke Universiteit LeuvenBob Durrant University of WaikatoTapio Elomaa Tampere UniversityJohannes Fürnkranz Johannes Kepler University LinzEibe Frank University of WaikatoElisa Fromont Université de Rennes 1Stephan Günnemann Technical University of MunichPatrick Gallinari LIP6 - University of ParisJoao Gama University of PortoPrzemyslaw Grabowicz University of Massachusetts, Amherst

Organization xiii

Eyke Hüllermeier Paderborn UniversityAllan Hanbury Vienna University of TechnologyDaniel Hernández-Lobato Universidad Autónoma de MadridJosé Hernández-Orallo Universitat Politècnica de ValènciaAndreas Hotho University of WuerzburgInaki Inza University of the Basque CountryMarius Kloft TU KaiserslauternArno Knobbe Universiteit LeidenLars Kotthoff University of WyomingDanica Kragic KTH Royal Institute of TechnologySébastien Lefèvre Université Bretagne SudBruno Lepri FBK-IrstPatrick Loiseau Inria and Ecole PolytechniqueJorg Lucke University of OldenburgFragkiskos Malliaros Paris-Saclay University, CentraleSupelec, and InriaGiuseppe Manco ICAR-CNRDunja Mladenic Jozef Stefan InstituteKatharina Morik TU DortmundSriraam Natarajan Indiana University BloomingtonSiegfried Nijssen Université catholique de LouvainAndrea Passerini University of TrentoMykola Pechenizkiy Eindhoven University of TechnologyJaakko Peltonen Aalto University and University of TampereMarian-Andrei Rizoiu University of Technology SydneyCéline Robardet INSA LyonMaja Rudolph BoschLars Schmidt-Thieme University of HildesheimThomas Seidl Ludwig-Maximilians-Universität MünchenArno Siebes Utrecht UniversityMyra Spiliopoulou Otto-von-Guericke-University MagdeburgYizhou Sun University of California, Los AngelesEinoshin Suzuki Kyushu UniversityJie Tang Tsinghua UniversityKe Tang Southern University of Science and TechnologyMarc Tommasi University of LilleIsabel Valera Saarland UniversityCeline Vens KU Leuven KulakChristel Vrain LIFO - University of OrléansJilles Vreeken Helmholtz Center for Information SecurityWillem Waegeman Ghent UniversityStefan Wrobel Fraunhofer IAIS, University of BonnMin-Ling Zhang Southeast University

xiv Organization

Area Chairs, Applied Data Science Track

Francesco Calabrese VodafoneMichelangelo Ceci Università degli Studi di Bari “Aldo Moro”Gianmarco De Francisci

MoralesISI Foundation

Tom Diethe AmazonJohannes Frünkranz Johannes Kepler University LinzHan Fang FacebookFaisal Farooq Qatar Computing Research InstituteRayid Ghani Carnegie Mellon UniviersityFrancesco Gullo UniCreditXiangnan He University of Science and Technology of ChinaGeorgiana Ifrim University College DublinThorsten Jungeblut Bielefeld University of Applied SciencesJohn A. Lee Université catholique de LouvainIlias Leontiadis Samsung AIViktor Losing Honda Research Institute EuropeYin Lou Ant GroupGabor Melli Sony PlayStationLuis Moreira-Matias University of PortoNicolò Navarin University of PadovaBenjamin Paaßen German Research Center for Artificial IntelligenceKitsuchart Pasupa King Mongkut’s Institute of Technology LadkrabangMykola Pechenizkiy Eindhoven University of TechnologyJulien Perez Naver Labs EuropeFabio Pinelli IMT LuccaZhaochun Ren Shandong UniversitySascha Saralajew Porsche AGFabrizio Silvestri FacebookSinong Wang Facebook AIXing Xie Microsoft Research AsiaJian Xu CitadelJing Zhang Renmin University of China

Program Committee Members, Research Track

Hanno Ackermann Leibniz University HannoverLinara Adilova Fraunhofer IAISZahra Ahmadi Johannes Gutenberg UniversityCuneyt Gurcan Akcora University of ManitobaOmer Deniz Akyildiz University of WarwickCarlos M. Alaíz Gudín Universidad Autónoma de MadridMohamed Alami Ecole PolytechniqueChehbourne Abdullah

AlchihabiCarleton University

Pegah Alizadeh University of Caen Normandy

Organization xv

Reem Alotaibi King Abdulaziz UniversityMassih-Reza Amini Université Grenoble AlpesShin Ando Tokyo University of ScienceThiago Andrade INESC TECKimon Antonakopoulos InriaAlessandro Antonucci IDSIAMuhammad Umer Anwaar Technical University of MunichEva Armengol IIIA-SICDennis Assenmacher University of MünsterMatthias Aßenmacher Ludwig-Maximilians-Universität MünchenMartin Atzmueller Osnabrueck UniversityBehrouz Babaki Polytechnique MontrealRohit Babbar Aalto UniversityElena Baralis Politecnico di TorinoMitra Baratchi University of TwenteChristian Bauckhage University of Bonn, Fraunhofer IAISMartin Becker University of WürzburgJessa Bekker Katholieke Universiteit LeuvenColin Bellinger National Research Council of CanadaKhalid Benabdeslem LIRIS Laboratory, Claude Bernard University Lyon IDiana Benavides-Prado Auckland University of TechnologyAnes Bendimerad LIRISChristoph Bergmeir University of GranadaAlexander Binder UiOAleksandar Bojchevski Technical University of MunichAhcène Boubekki UiT Arctic University of NorwayPaula Branco EECS University of OttawaTanya Braun University of LübeckKatharina Breininger Friedrich-Alexander-Universität Erlangen NürnbergWieland Brendel University of TübingenJohn Burden University of CambridgeSophie Burkhardt TU KaiserslauternSebastian Buschjäger TU DortmundBorja Calvo University of the Basque CountryStephane Canu LITIS, INSA de RouenCornelia Caragea University of Illinois at ChicagoPaula Carroll University College DublinGiuseppe Casalicchio Ludwig Maximilian University of MunichBogdan Cautis Paris-Saclay UniversityRémy Cazabet Université de LyonJosu Ceberio University of the Basque CountryPeggy Cellier IRISA/INSA RennesMattia Cerrato Università degli Studi di TorinoRicardo Cerri Federal University of Sao CarlosAlessandra Cervone AmazonAyman Chaouki Institut Mines-Télécom

xvi Organization

Paco Charte Universidad de JaénRita Chattopadhyay Intel CorporationVaggos Chatziafratis Stanford UniversityTianyi Chen Zhejiang University City CollegeYuzhou Chen Southern Methodist UniversityYiu-Ming Cheung Hong Kong Baptist UniversityAnshuman Chhabra University of California, DavisTing-Wu Chin Carnegie Mellon UniversityOana Cocarascu King’s College LondonLidia Contreras-Ochando Universitat Politècnica de ValènciaRoberto Corizzo American UniversityAnna Helena Reali Costa Universidade de São PauloFabrizio Costa University of ExeterGustavo De Assis Costa Instituto Federal de Educação, Ciância e Tecnologia

de GoiásBertrand Cuissart GREYCThi-Bich-Hanh Dao University of OrleansMayukh Das Microsoft Research LabPadraig Davidson Universität WürzburgPaul Davidsson Malmö UniversityGwendoline De Bie ENSTijl De Bie Ghent UniversityAndre de Carvalho Universidade de São PauloOrphée De Clercq Ghent UniversityAlper Demir Ízmir University of EconomicsNicola Di Mauro Università degli Studi di Bari “Aldo Moro”Yao-Xiang Ding Nanjing UniversityCarola Doerr Sorbonne UniversityBoxiang Dong Montclair State UniversityRuihai Dong University College DublinXin Du Eindhoven University of TechnologyStefan Duffner LIRISWouter Duivesteijn Eindhoven University of TechnologyAudrey Durand McGill UniversityInês Dutra University of PortoSaso Dzeroski Jozef Stefan InstituteHamid Eghbalzadeh Johannes Kepler UniversityDominik Endres University of MarburgRoberto Esposito Università degli Studi di TorinoSamuel G. Fadel Universidade Estadual de CampinasXiuyi Fan Imperial College LondonHadi Fanaee-T. Halmstad UniversityElaine Faria Federal University of UberlandiaFabio Fassetti University of CalabriaKilian Fatras InriaAd Feelders Utrecht University

Organization xvii

Songhe Feng Beijing Jiaotong UniversityÀngela Fernández-Pascual Universidad Autónoma de MadridDaniel Fernández-Sánchez Universidad Autónoma de MadridSofia Fernandes University of AveiroCesar Ferri Universitat Politécnica de ValénciaRémi Flamary École PolytechniqueMichael Flynn University of East AngliaGermain Forestier Université de Haute AlsaceKary Främling Umeå UniversityBenoît Frénay Université de NamurVincent Francois University of AmsterdamEmilia Gómez Joint Research Centre - European CommissionLuis Galárraga InriaEsther Galbrun University of Eastern FinlandClaudio Gallicchio University of PisaJochen Garcke University of BonnClément Gautrais KU LeuvenYulia Gel University of Texas at Dallas and University

of WaterlooPierre Geurts University of LiègeAmirata Ghorbani Stanford UniversityHeitor Murilo Gomes University of WaikatoChen Gong Shanghai Jiao Tong UniversityBedartha Goswami University of TübingenHenry Gouk University of EdinburghJames Goulding University of NottinghamAntoine Gourru Université Lumière Lyon 2Massimo Guarascio ICAR-CNRRiccardo Guidotti University of PisaEkta Gujral University of California, RiversideFrancesco Gullo UniCreditTias Guns Vrije Universiteit BrusselThomas Guyet Institut Agro, IRISATom Hanika University of KasselValentin Hartmann Ecole Polytechnique Fédérale de LausanneMarwan Hassani Eindhoven University of TechnologyJukka Heikkonen University of TurkuFredrik Heintz Linköping UniversitySibylle Hess TU EindhovenJaakko Hollmén Aalto UniversityTamas Horvath University of Bonn, Fraunhofer IAISBinbin Hu Ant GroupHong Huang UGoeGeorgiana Ifrim University College DublinAngelo Impedovo Università degli studi di Bari “Aldo Moro”

xviii Organization

Nathalie Japkowicz American UniversitySzymon Jaroszewicz Institute of Computer Science, Polish Academy

of SciencesSaumya Jetley InriaBinbin Jia Southeast UniversityXiuyi Jia School of Computer Science and Technology, Nanjing

University of Science and TechnologyYuheng Jia City University of Hong KongSiyang Jiang National Taiwan UniversityPriyadarshini Kumari IIT BombayAta Kaban University of BirminghamTomasz Kajdanowicz Wroclaw University of TechnologyVana Kalogeraki Athens University of Economics and BusinessToshihiro Kamishima National Institute of Advanced Industrial Science

and TechnologyMichael Kamp Monash UniversityBo Kang Ghent UniversityDimitrios Karapiperis Hellenic Open UniversityPanagiotis Karras Aarhus UniversityGeorge Karypis University of MinnesotaMark Keane University College DublinKristian Kersting TU DarmstadtMasahiro Kimura Ryukoku UniversityJiri Klema Czech Technical UniversityDragi Kocev Jozef Stefan InstituteMasahiro Kohjima NTTLukasz Korycki Virginia Commonwealth UniversityPeer Kröger Ludwig Maximilian University of MünichAnna Krause University of WürzburgBartosz Krawczyk Virginia Commonwealth UniversityGeorg Krempl Utrecht UniversityMeelis Kull University of TartuVladimir Kuzmanovski Aalto UniversityAriel Kwiatkowski Ecole PolytechniqueEmanuele La Malfa University of OxfordBeatriz López University of GironaPreethi Lahoti Aalto UniversityIchraf Lahouli EuranovaNiklas Lavesson Jönköping UniversityAonghus Lawlor University College DublinJeongmin Lee University of PittsburghDaniel Lemire LICEF Research Center and Université du QuébecFlorian Lemmerich University of PassauElisabeth Lex Graz University of TechnologyJiani Li Vanderbilt UniversityRui Li Inspur GroupWentong Liao Lebniz University Hannover

Organization xix

Jiayin Lin University of WollongongRudolf Lioutikov UT AustinMarco Lippi University of Modena and Reggio EmiliaSuzanne Little Dublin City UniversityShengcai Liu University of Science and Technology of ChinaShenghua Liu Institute of Computing Technology, Chinese Academy

of SciencesPhilipp Liznerski Technische Universität KaiserslauternCorrado Loglisci Università degli Studi di Bari “Aldo Moro”Ting Long Shanghai Jiaotong UniversityTsai-Ching Lu HRL LaboratoriesYunpu Ma Siemens AGZichen Ma The Chinese University of Hong KongSara Madeira Universidade de LisboaSimona Maggio DataikuSara Magliacane IBMSebastian Mair Leuphana University LüneburgLorenzo Malandri University of Milan BicoccaDonato Malerba Università degli Studi di Bari “Aldo Moro”Pekka Malo Aalto UniversityRobin Manhaeve KU LeuvenSilviu Maniu Université Paris-SudGiuseppe Marra KU LeuvenFernando Martínez-Plumed Joint Research Centre - European CommissionAlexander Marx Max Plank Institue for Informatics and Saarland

UniversityFlorent Masseglia InriaTetsu Matsukawa Kyushu UniversityWolfgang Mayer University of South AustraliaSantiago Mazuelas Basque center for Applied MathematicsStefano Melacci University of SienaErnestina Menasalvas Universidad Politécnica de MadridRosa Meo Università degli Studi di TorinoAlberto Maria Metelli Politecnico di MilanoSaskia Metzler Max Planck Institute for InformaticsAlessio Micheli University of PisaPaolo Mignone Università degli studi di Bari “Aldo Moro”Matej Mihelčić University of ZagrebDecebal Constantin Mocanu University of TwenteNuno Moniz INESC TEC and University of PortoCarlos Monserrat Universitat Politécnica de ValénciaCorrado Monti ISI FoundationJacob Montiel University of WaikatoAhmadreza Mosallanezhad Arizona State UniversityTanmoy Mukherjee University of TennesseeMartin Mundt Goethe University

xx Organization

Mohamed Nadif Université de ParisOmer Nagar Bar Ilan UniversityFelipe Kenji Nakano Katholieke Universiteit LeuvenMirco Nanni KDD-Lab ISTI-CNR PisaApurva Narayan University of WaterlooNicolò Navarin University of PadovaBenjamin Negrevergne Paris Dauphine UniversityHurley Neil University College DublinStefan Neumann University of ViennaNgoc-Tri Ngo The University of Danang - University of Science

and TechnologyDai Nguyen Monash UniversityEirini Ntoutsi Free University BerlinAndrea Nuernberger Otto-von-Guericke-Universität MagdeburgPablo Olmos University Carlos IIIJames O’Neill University of LiverpoolBarry O’Sullivan University College CorkRita P. Ribeiro University of PortoAritz Pèrez Basque Center for Applied MathematicsJoao Palotti Qatar Computing Research InstituteGuansong Pang University of AdelaidePance Panov Jozef Stefan InstituteEvangelos Papalexakis University of California, RiversideHaekyu Park Georgia Institute of TechnologySudipta Paul Umeå UniversityYulong Pei Eindhoven University of TechnologyCharlotte Pelletier Université Bretagne SudRuggero G. Pensa University of TorinoBryan Perozzi GoogleNathanael Perraudin ETH ZurichLukas Pfahler TU DortmundBastian Pfeifer Medical University of GrazNico Piatkowski TU DortmundRobert Pienta Georgia Institute of TechnologyFábio Pinto Faculdade de Economia do PortoGianvito Pio University of Bari “Aldo Moro”Giuseppe Pirrò Sapienza University of RomeClaudia Plant University of ViennaMarc Plantevit LIRIS - Universitè Claude Bernard Lyon 1Amit Portnoy Ben Gurion UniversityMelanie Pradier Harvard UniversityPaul Prasse University of PotsdamPhilippe Preux Inria, LIFL, Universitè de LilleRicardo Prudencio Federal University of PernambucoZhou Qifei Peking UniversityErik Quaeghebeur TU Eindhoven

Organization xxi

Tahrima Rahman University of Texas at DallasHerilalaina Rakotoarison InriaAlexander Rakowski Hasso Plattner InstituteMaría José Ramírez Universitat Politècnica de ValèciaVisvanathan Ramesh Goethe UniversityJan Ramon InriaHuzefa Rangwala George Mason UniversityAleksandra Rashkovska Jožef Stefan InstituteJoe Redshaw University of NottinghamMatthias Renz Christian-Albrechts-Universität zu KielMatteo Riondato Amherst CollegeEttore Ritacco ICAR-CNRMateus Riva Télécom ParisTechAntonio Rivera Universidad Politécnica de MadridMarko Robnik-Sikonja University of LjubljanaSimon Rodriguez Santana Institute of Mathematical Sciences (ICMAT-CSIC)Mohammad Rostami University of Southern CaliforniaCéline Rouveirol Laboratoire LIPN-UMR CNRSJože Rožanec Jožef Stefan InstitutePeter Rubbens Flanders Marine InstituteDavid Ruegamer LMU MunichSalvatore Ruggieri Università di PisaFrancisco Ruiz DeepMindAnne Sabourin Télécom ParisTechTapio Salakoski University of TurkuPablo Sanchez-Martin Max Planck Institute for Intelligent SystemsEmanuele Sansone KU LeuvenYucel Saygin Sabanci UniversityPatrick Schäfer Humboldt Universität zu BerlinPierre Schaus UCLouvainUte Schmid University of BambergSebastian Schmoll Ludwig Maximilian University of MunichMarc Schoenauer InriaMatthias Schubert Ludwig Maximilian University of MunichMarian Scuturici LIRIS-INSA de LyonJunming Shao University of Science and Technology of ChinaManali Sharma Samsung Semiconductor Inc.Abdul Saboor Sheikh Zalando ResearchJacquelyn Shelton Hong Kong Polytechnic UniversityFeihong Shen Jilin UniversityGavin Smith University of NottinghamKma Solaiman Purdue UniversityArnaud Soulet Université François Rabelais ToursAlessandro Sperduti University of PaduaGiovanni Stilo Università degli Studi dell’AquilaMichiel Stock Ghent University

xxii Organization

Lech Szymanski University of OtagoShazia Tabassum University of PortoAndrea Tagarelli University of CalabriaAcar Tamersoy NortonLifeLock Research GroupChang Wei Tan Monash UniversitySasu Tarkoma University of HelsinkiBouadi Tassadit IRISA-Université Rennes 1Nikolaj Tatti University of HelsinkiMaryam Tavakol Eindhoven University of TechnologyPooya Tavallali University of California, Los AngelesMaguelonne Teisseire Irstea - UMR TetisAlexandre Termier Université de Rennes 1Stefano Teso University of TrentoJanek Thomas Fraunhofer Institute for Integrated Circuits IISAlessandro Tibo Aalborg UniversitySofia Triantafillou University of PittsburghGrigorios Tsoumakas Aristotle University of ThessalonikiPeter van der Putten LIACS, Leiden University and PegasystemsElia Van Wolputte KU LeuvenRobert A. Vandermeulen Technische Universität BerlinFabio Vandin University of PadovaFilipe Veiga Massachusetts Institute of TechnologyBruno Veloso Universidade Portucalense and LIAAD - INESC TECSebastián Ventura University of CordobaRosana Veroneze UNICAMPHerna Viktor University of OttawaJoão Vinagre INESC TECHuaiyu Wan Beijing Jiaotong UniversityBeilun Wang Southeast UniversityHu Wang University of AdelaideLun Wang University of California, BerkeleyYu Wang Peking UniversityZijie J. Wang Georgia TechTong Wei Nanjing UniversityPascal Welke University of BonnJoerg Wicker University of AucklandMoritz Wolter University of BonnNing Xu Southeast UniversityAkihiro Yamaguchi Toshiba CorporationHaitian Yang Institute of Information Engineering, Chinese Academy

of SciencesYang Yang Nanjing UniversityZhuang Yang Sun Yat-sen UniversityHelen Yannakoudakis King’s College LondonHeng Yao Tongji UniversityHan-Jia Ye Nanjing University

Organization xxiii

Kristina Yordanova University of RostockTetsuya Yoshida Nara Women’s UniversityGuoxian Yu Shandong University, ChinaSha Yuan Tsinghua UniversityValentina Zantedeschi INSA LyonAlbin Zehe University of WürzburgBob Zhang University of MacauTeng Zhang Huazhong University of Science and TechnologyLiang Zhao University of São PauloBingxin Zhou University of SydneyKenny Zhu Shanghai Jiao Tong UniversityYanqiao Zhu Institute of Automation, Chinese Academy of SciencesArthur Zimek University of Southern DenmarkAlbrecht Zimmermann Université Caen NormandieIndre Zliobaite University of HelsinkiMarkus Zopf NEC Labs Europe

Program Committee Members, Applied Data Science Track

Mahdi Abolghasemi Monash UniversityEvrim Acar Simula Research LabDeepak Ajwani University College DublinPegah Alizadeh University of Caen NormandyJean-Marc Andreoli Naver Labs EuropeGiorgio Angelotti ISAE SupaeroStefanos Antaris KTH Royal Institute of TechnologyXiang Ao Institute of Computing Technology, Chinese Academy

of SciencesYusuf Arslan University of LuxembourgCristian Axenie Huawei European Research CenterHanane Azzag Université Sorbonne Paris NordPedro Baiz Imperial College LondonIdir Benouaret CNRS, Université Grenoble AlpesLaurent Besacier Laboratoire d’Informatique de GrenobleAntonio Bevilacqua Insight Centre for Data AnalyticsAdrien Bibal University of NamurWu Bin Zhengzhou UniversityPatrick Blöbaum AmazonPavel Blinov Sber Artificial Intelligence LaboratoryLudovico Boratto University of CagliariStefano Bortoli Huawei Technologies DuesseldorfZekun Cai University of TokyoNicolas Carrara University of TorontoJohn Cartlidge University of BristolOded Cats Delft University of TechnologyTania Cerquitelli Politecnico di Torino

xxiv Organization

Prithwish Chakraborty IBMRita Chattopadhyay Intel Corp.Keru Chen GrabTaxi Pte Ltd.Liang Chen Sun Yat-sen UniversityZhiyong Cheng Shandong Artificial Intelligence InstituteSilvia Chiusano Politecnico di TorinoMinqi Chong CitadelJeremie Clos University of NottinghamJ. Albert Conejero Casares Universitat Politécnica de VaéciaEvan Crothers University of OttawaHenggang Cui Uber ATGTiago Cunha University of PortoPadraig Cunningham University College DublinEustache Diemert CRITEO ResearchNat Dilokthanakul Vidyasirimedhi Institute of Science and TechnologyDaizong Ding Fudan UniversityKaize Ding ASUMichele Donini AmazonLukas Ewecker Porsche AGZipei Fan University of TokyoBojing Feng National Laboratory of Pattern Recognition, Institute

of Automation, Chinese Academy of ScienceFlavio Figueiredo Universidade Federal de Minas GeraisBlaz Fortuna Qlector d.o.o.Zuohui Fu Rutgers UniversityFabio Fumarola University of Bari “Aldo Moro”Chen Gao Tsinghua UniversityLuis Garcia University of BrasíliaCinmayii

Garillos-ManliguezUniversity of the Philippines Mindanao

Kiran Garimella Aalto UniversityEtienne Goffinet Laboratoire LIPN-UMR CNRSMichael Granitzer University of PassauXinyu Guan Xi’an Jiaotong UniversityThomas Guyet Institut Agro, IRISAMassinissa Hamidi Laboratoire LIPN-UMR CNRSJunheng Hao University of California, Los AngelesMartina Hasenjaeger Honda Research Institute Europe GmbHLars Holdijk University of AmsterdamChao Huang University of Notre DameGuanjie Huang Penn State UniversityHong Huang UGoeYiran Huang TECOMadiha Ijaz IBMRoberto Interdonato CIRAD - UMR TETISOmid Isfahani Alamdari University of Pisa

Organization xxv

Guillaume Jacquet JRCNathalie Japkowicz American UniversityShaoxiong Ji Aalto UniversityNan Jiang Purdue UniversityRenhe Jiang University of TokyoSong Jiang University of California, Los AngelesAdan Jose-Garcia University of ExeterJihed Khiari Johannes Kepler UniversitätHyunju Kim KAISTTomas Kliegr University of EconomicsYun Sing Koh University of AucklandPawan Kumar IIIT, HyderabadChandresh Kumar Maurya CSE, IIT IndoreThach Le Nguyen The Insight Centre for Data AnalyticsMustapha Lebbah Université Paris 13, LIPN-CNRSDongman Lee Korea Advanced Institute of Science and TechnologyRui Li SonyXiaoting Li Pennsylvania State UniversityZeyu Li University of California, Los AngelesDefu Lian University of Science and Technology of ChinaJiayin Lin University of WollongongJason Lines University of East AngliaBowen Liu Stanford UniversityPedro Henrique Luz de

AraujoUniversity of Brasilia

Fenglong Ma Pennsylvania State UniversityBrian Mac Namee University College DublinManchit Madan MyntraAjay Mahimkar AT&T LabsDomenico Mandaglio Università della CalabriaKoji Maruhashi Fujitsu Laboratories Ltd.Sarah Masud LCS2, IIIT-DEric Meissner University of CambridgeJoão Mendes-Moreira INESC TECChuan Meng Shandong UniversityFabio Mercorio University of Milano-BicoccaAngela Meyer Bern University of Applied SciencesCongcong Miao Tsinghua UniversityStéphane Moreau Université de SherbrookeKoyel Mukherjee IBM Research IndiaFabricio Murai Universidade Federal de Minas GeraisTaichi Murayama NAISTPhilip Nadler Imperial College LondonFranco Maria Nardini ISTI-CNRNgoc-Tri Ngo The University of Danang - University of Science and

Technology

xxvi Organization

Anna Nguyen Karlsruhe Institute of TechnologyHao Niu KDDI Research, Inc.Inna Novalija Jožef Stefan InstituteTsuyosh Okita Kyushu Institute of TechnologyAoma Osmani LIPN-UMR CNRS 7030, Université Paris 13Latifa Oukhellou IFSTTARAndrei Paleyes University of CambridgeChanyoung Park KAISTJuan Manuel Parrilla

GutierrezUniversity of Glasgow

Luca Pasa Università degli Studi Di PadovaPedro Pereira Rodrigues University of PortoMiquel Perelló-Nieto University of BristolBeatrice Perez Dartmouth CollegeAlan Perotti ISI FoundationMirko Polato University of PaduaGiovanni Ponti ENEANicolas Posocco Eura NovaCedric Pradalier GeorgiaTech LorraineGiulia Preti ISI FoundationA. A. A. Qahtan Utrecht UniversityChuan Qin University of Science and Technology of ChinaDimitrios Rafailidis University of ThessalyCyril Ray Arts et Metiers Institute of Technology, Ecole Navale,

IRENavWolfgang Reif University of AugsburgKit Rodolfa Carnegie Mellon UniversityChristophe Rodrigues Pôle Universitaire Léonard de VinciNatali Ruchansky NetflixHajer Salem AUDENSIELParinya Sanguansat Panyapiwat Institute of ManagementAtul Saroop AmazonAlexander Schiendorfer Technische Hochschule IngolstadtPeter Schlicht VolkswagenJens Schreiber University of KasselAlexander Schulz Bielefeld UniversityAndrea Schwung FH SWFEdoardo Serra Boise State UniversityLorenzo Severini UniCreditAmmar Shaker Paderborn UniversityJiaming Shen University of Illinois at Urbana-ChampaignRongye Shi Columbia UniversityWang Siyu Southwestern University of Finance and EconomicsHao Song University of BristolFrancesca Spezzano Boise State UniversitySimon Stieber University of Augsburg

Organization xxvii

Laurens Stoop Utrecht UniversityHongyang Su Harbin Institute of TechnologyDavid Sun AppleWeiwei Sun Shandong UniversityMaryam Tabar Pennsylvania State UniversityAnika Tabassum Virginia TechGarth Tarr University of SydneyDinh Van Tran University of PadovaSreekanth Vempati MyntraHerna Viktor University of OttawaDaheng Wang University of Notre DameHongwei Wang Stanford UniversityWenjie Wang National University of SingaporeYue Wang Microsoft ResearchZhaonan Wang University of Tokyo and National Institute

of Advanced Industrial Science and TechnologyMichael Wilbur Vanderbilt UniversityRoberto Wolfler Calvo LIPN, Université Paris 13Di Wu Chongqing Institute of Green and Intelligent

TechnologyGang Xiong Chinese Academy of SciencesXiaoyu Xu Chongqing Institute of Green and Intelligent

TechnologyYexiang Xue Purdue UniversitySangeeta Yadav Indian Institute of ScienceHao Yan Washington University in St. LouisChuang Yang University of TokyoYang Yang Northwestern UniversityYou Yizhe Institute of Information Engineering, Chinese Academy

of SciencesAlexander Ypma ASMLJun Yuan The Boeing CompanyMingxuan Yue University of Southern CaliforniaDanqing Zhang AmazonJiangwei Zhang TencentXiaohan Zhang Sony Interactive EntertainmentXinyang Zhang University of Illinois at Urbana-ChampaignYongxin Zhang Sun Yat-sen UniversityMia Zhao AirbnbTong Zhao University of Notre DameBin Zhou National University of Defense TechnologyBo Zhou BaiduLouis Zigrand Université Sorbonne Paris Nord

xxviii Organization

Sponsors

Organization xxix

Invited Talks Abstracts

WuDao: Pretrain the World

Jie Tang

Tsinghua University, Beijing, China

Abstract. Large-scale pretrained model on web texts have substantiallyadvanced the state of the art in various AI tasks, such as natural languageunderstanding and text generation, and image processing, multimodal modeling.The downstream task performances have also constantly increased in the pastfew years. In this talk, I will first go through three families: augoregressivemodels (e.g., GPT), autoencoding models (e.g., BERT), and encoder-decodermodels. Then, I will introduce China’s first homegrown super-scale intelligentmodel system, with the goal of building an ultra-large-scale cognitive-orientedpretraining model to focus on essential problems in general artificial intelligencefrom a cognitive perspective. In particular, as an example, I will elaborate anovel pretraining framework GLM (General Language Model) to address thischallenge. GLM has three major benefits: (1) it performs well on classification,unconditional generation, and conditional generation tasks with one singlepretrained model; (2) it outperforms BERT-like models on classification due toimproved pretrain-finetune consistency; (3) it naturally handles variable-lengthblank filling which is crucial for many downstream tasks. Empirically, GLMsubstantially outperforms BERT on the SuperGLUE natural language under-standing benchmark with the same amount of pre-training data.

Bio: Jie Tang is a Professor and the Associate Chair of the Department of ComputerScience at Tsinghua University. He is a Fellow of the IEEE. His interests includeartificial intelligence, data mining, social networks, and machine learning. He served asGeneral Co-Chair of WWW’23, and PC Co-Chair of WWW’21, CIKM’16,WSDM’15, and EiC of IEEE T. on Big Data and AI Open J. He leads the projectAMiner.org, an AI-enabled research network analysis system, which has attracted morethan 20 million users from 220 countries/regions in the world. He was honored with theSIGKDD Test-of-Time Award, the UK Royal Society-Newton Advanced FellowshipAward, NSFC for Distinguished Young Scholar, and KDD’18 Service Award.

The Value of Data for Personalization

Susan Athey

Stanford Graduate School of Business, Stanford, California

Abstract. This talk will present methods for assessing the economic value ofdata in specific contexts, and will analyze the value of different types of data inthe context of several empirical applications.

Bio: Susan Athey is the Economics of Technology Professor at Stanford GraduateSchool of Business. She received her bachelor’s degree from Duke University and herPhD from Stanford, and she holds an honorary doctorate from Duke University. Shepreviously taught at the economics departments at MIT, Stanford and Harvard. She isan elected member of the National Academy of Science, and is the recipient of the JohnBates Clark Medal, awarded by the American Economics Association to the economistunder 40 who has made the greatest contributions to thought and knowledge. Hercurrent research focuses on the economics of digitization, marketplace design, and theintersection of econometrics and machine learning. She has worked on several appli-cation areas, including timber auctions, internet search, online advertising, the newsmedia, and the application of digital technology to social impact applications. As oneof the first “tech economists,” she served as consulting chief economist for MicrosoftCorporation for six years, and now serves on the boards of Expedia, Lending Club,Rover, Turo, and Ripple, as well as non-profit Innovations for Poverty Action. She alsoserves as a long-term advisor to the British Columbia Ministry of Forests, helpingarchitect and implement their auction-based pricing system. She is the foundingdirector of the Golub Capital Social Impact Lab at Stanford GSB, and associate directorof the Stanford Institute for Human-Centered Artificial Intelligence.

AI Fairness in Practice

Joaquin Quiñonero Candela

Facebook

Abstract. In this talk I will share learnings from my journey from deploying MLat Facebook scale to understanding questions of fairness in AI. I will useexamples to illustrate how there is not a single definition of AI fairness, butseveral ones that are in contradiction and that correspond to different moralinterpretations of fairness. AI fairness is a process, and it’s not primarily an AIissue. It therefore requires a multidisciplinary approach.

Bio: Joaquin Quiñonero Candela leads the technical strategy for Responsible AI atFacebook, including areas like fairness and inclusiveness, robustness, privacy, trans-parency and accountability. As part of this focus, he serves on the Board of Directorsof the Partnership on AI, an organization interested in the societal consequences ofartificial intelligence, and is a member of the Spanish Government’s Advisory Boardon Artificial Intelligence. Before this he built the AML (Applied Machine Learning)team at Facebook, driving product impact at scale through applied research in machinelearning, language understanding, computer vision, computational photography, aug-mented reality and other AI disciplines. AML also built the unified AI platform thatpowers all production applications of AI across the family of Facebook products. Priorto Facebook, Joaquin built and taught a new machine learning course at the Universityof Cambridge, worked at Microsoft Research, and conducted postdoctoral research atthree institutions in Germany, including the Max Planck Institute for BiologicalCybernetics. He received his PhD from the Technical University of Denmark.

Safety and Robustness for Deep Learningwith Provable Guarantees

Marta Kwiatkowska

University of Oxford, Oxford, England

Abstract. Computing systems are becoming ever more complex, with decisionsincreasingly often based on deep learning components. A wide variety ofapplications are being developed, many of them safety-critical, such asself-driving cars and medical diagnosis. Since deep learning is unstable withrespect to adversarial perturbations, there is a need for rigorous softwaredevelopment methodologies that encompass machine learning components. Thislecture will describe progress with developing automated verification and testingtechniques for deep neural networks to ensure safety and robustness of theirdecisions with respect to input perturbations. The techniques exploit Lipschitzcontinuity of the networks and aim to approximate, for a given set of inputs, thereachable set of network outputs in terms of lower and upper bounds, in anytimemanner, with provable guarantees. We develop novel algorithms based onfeature-guided search, games, global optimisation and Bayesian methods, andevaluate them on state-of-the-art networks. The lecture will conclude with anoverview of the challenges in this field.

Bio: Marta Kwiatkowska is Professor of Computing Systems and Fellow of TrinityCollege, University of Oxford. She is known for fundamental contributions to thetheory and practice of model checking for probabilistic systems, focusing on automatedtechniques for verification and synthesis from quantitative specifications. She led thedevelopment of the PRISM model checker (www.prismmodelchecker.org), the leadingsoftware tool in the area and winner of the HVC Award 2016. Probabilistic modelchecking has been adopted in diverse fields, including distributed computing, wirelessnetworks, security, robotics, healthcare, systems biology, DNA computing and nan-otechnology, with genuine flaws found and corrected in real-world protocols. Kwiat-kowska is the first female winner of the Royal Society Milner Award, winner of theBCS Lovelace Medal and was awarded an honorary doctorate from KTH RoyalInstitute of Technology in Stockholm. She won two ERC Advanced Grants, VERI-WARE and FUN2MODEL, and is a coinvestigator of the EPSRC Programme Grant onMobile Autonomy. Kwiatkowska is a Fellow of the Royal Society, Fellow of ACM,EATCS and BCS, and Member of Academia Europea.

Contents – Part I

Online Learning

Routine Bandits: Minimizing Regret on Recurring Problems. . . . . . . . . . . . . 3Hassan Saber, Léo Saci, Odalric-Ambrym Maillard, and Audrey Durand

Conservative Online Convex Optimization . . . . . . . . . . . . . . . . . . . . . . . . . 19Martino Bernasconi de Luca, Edoardo Vittori, Francesco Trovò,and Marcello Restelli

Knowledge Infused Policy Gradients with Upper Confidence Boundfor Relational Bandits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Kaushik Roy, Qi Zhang, Manas Gaur, and Amit Sheth

Exploiting History Data for Nonstationary Multi-armed Bandit . . . . . . . . . . . 51Gerlando Re, Fabio Chiusano, Francesco Trovò, Diego Carrera,Giacomo Boracchi, and Marcello Restelli

High-Probability Kernel Alignment Regret Bounds for OnlineKernel Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Shizhong Liao and Junfan Li

Reinforcement Learning

Periodic Intra-ensemble Knowledge Distillation for ReinforcementLearning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Zhang-Wei Hong, Prabhat Nagarajan, and Guilherme Maeda

Learning to Build High-Fidelity and Robust Environment Models . . . . . . . . . 104Weinan Zhang, Zhengyu Yang, Jian Shen, Minghuan Liu, Yimin Huang,Xing Zhang, Ruiming Tang, and Zhenguo Li

Ensemble and Auxiliary Tasks for Data-Efficient DeepReinforcement Learning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Muhammad Rizki Maulana and Wee Sun Lee

Multi-agent Imitation Learning with Copulas . . . . . . . . . . . . . . . . . . . . . . . 139Hongwei Wang, Lantao Yu, Zhangjie Cao, and Stefano Ermon

CMIX: Deep Multi-agent Reinforcement Learning with Peakand Average Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Chenyi Liu, Nan Geng, Vaneet Aggarwal, Tian Lan, Yuan Yang,and Mingwei Xu

Model-Based Offline Policy Optimization with Distribution CorrectingRegularization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Jian Shen, Mingcheng Chen, Zhicheng Zhang, Zhengyu Yang,Weinan Zhang, and Yong Yu

Disagreement Options: Task Adaptation Through Temporally ExtendedActions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Matthias Hutsebaut-Buysse, Tom De Schepper, Kevin Mets,and Steven Latré

Deep Adaptive Multi-intention Inverse Reinforcement Learning . . . . . . . . . . 206Ariyan Bighashdel, Panagiotis Meletis, Pavol Jancura,and Gijs Dubbelman

Unsupervised Task Clustering for Multi-task Reinforcement Learning . . . . . . 222Johannes Ackermann, Oliver Richter, and Roger Wattenhofer

Deep Model Compression via Two-Stage Deep Reinforcement Learning . . . . 238Huixin Zhan, Wei-Ming Lin, and Yongcan Cao

Dropout’s Dream Land: Generalization from Learned Simulatorsto Reality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Zac Wellmer and James T. Kwok

Goal Modelling for Deep Reinforcement Learning Agents . . . . . . . . . . . . . . 271Jonathan Leung, Zhiqi Shen, Zhiwei Zeng, and Chunyan Miao

Time Series, Streams, and Sequence Models

Deviation-Based Marked Temporal Point Process for Marker Prediction . . . . 289Anand Vir Singh Chauhan, Shivshankar Reddy, Maneet Singh,Karamjit Singh, and Tanmoy Bhowmik

Deep Structural Point Process for Learning TemporalInteraction Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

Jiangxia Cao, Xixun Lin, Xin Cong, Shu Guo, Hengzhu Tang,Tingwen Liu, and Bin Wang

Holistic Prediction for Public Transport Crowd Flows: A Spatio DynamicGraph Network Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321

Bingjie He, Shukai Li, Chen Zhang, Baihua Zheng, and Fugee Tsung

Reservoir Pattern Sampling in Data Streams . . . . . . . . . . . . . . . . . . . . . . . . 337Arnaud Giacometti and Arnaud Soulet

Discovering Proper Neighbors to Improve Session-BasedRecommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353

Lin Liu, Li Wang, and Tao Lian

xxxviii Contents – Part I

Continuous-Time Markov-Switching GARCH Process with Robust StatePath Identification and Volatility Estimation . . . . . . . . . . . . . . . . . . . . . . . . 370

Yinan Li and Fang Liu

Dynamic Heterogeneous Graph Embedding via Heterogeneous HawkesProcess . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388

Yugang Ji, Tianrui Jia, Yuan Fang, and Chuan Shi

Explainable Online Deep Neural Network Selection Using AdaptiveSaliency Maps for Time Series Forecasting . . . . . . . . . . . . . . . . . . . . . . . . 404

Amal Saadallah, Matthias Jakobs, and Katharina Morik

Change Detection in Multivariate Datastreams Controlling False Alarms . . . . 421Luca Frittoli, Diego Carrera, and Giacomo Boracchi

Approximation Algorithms for Confidence Bands for Time Series. . . . . . . . . 437Nikolaj Tatti

A Mixed Noise and Constraint-Based Approach to Causal Inferencein Time Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453

Karim Assaad, Emilie Devijver, Eric Gaussier, and Ali Ait-Bachir

Estimating the Electrical Power Output of Industrial Deviceswith End-to-End Time-Series Classification in the Presenceof Label Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469

Andrea Castellani, Sebastian Schmitt, and Barbara Hammer

Multi-task Learning Curve Forecasting Across HyperparameterConfigurations and Datasets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 485

Shayan Jawed, Hadi Jomaa, Lars Schmidt-Thieme, and Josif Grabocka

Streaming Decision Trees for Lifelong Learning . . . . . . . . . . . . . . . . . . . . . 502Łukasz Korycki and Bartosz Krawczyk

Transfer and Multi-task Learning

Unifying Domain Adaptation and Domain Generalization for RobustPrediction Across Minority Racial Groups . . . . . . . . . . . . . . . . . . . . . . . . . 521

Farzaneh Khoshnevisan and Min Chi

Deep Multi-task Augmented Feature Learning via Hierarchical GraphNeural Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538

Pengxin Guo, Chang Deng, Linjie Xu, Xiaonan Huang, and Yu Zhang

Bridging Few-Shot Learning and Adaptation: New Challengesof Support-Query Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 554

Etienne Bennequin, Victor Bouvier, Myriam Tami, Antoine Toubhans,and Céline Hudelot

Contents – Part I xxxix

Source Hypothesis Transfer for Zero-Shot Domain Adaptation . . . . . . . . . . . 570Tomoya Sakai

FedPHP: Federated Personalization with Inherited Private Models . . . . . . . . . 587Xin-Chun Li, De-Chuan Zhan, Yunfeng Shao, Bingshuai Li,and Shaoming Song

Rumour Detection via Zero-Shot Cross-Lingual Transfer Learning . . . . . . . . 603Lin Tian, Xiuzhen Zhang, and Jey Han Lau

Continual Learning with Dual Regularizations . . . . . . . . . . . . . . . . . . . . . . 619Xuejun Han and Yuhong Guo

EARLIN: Early Out-of-Distribution Detection for Resource-EfficientCollaborative Inference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 635

Sumaiya Tabassum Nimi, Md Adnan Arefeen, Md Yusuf Sarwar Uddin,and Yugyung Lee

Semi-supervised and Few-Shot Learning

LSMI-Sinkhorn: Semi-supervised Mutual Information Estimation withOptimal Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 655

Yanbin Liu, Makoto Yamada, Yao-Hung Hubert Tsai, Tam Le,Ruslan Salakhutdinov, and Yi Yang

Spatial Contrastive Learning for Few-Shot Classification . . . . . . . . . . . . . . . 671Yassine Ouali, Céline Hudelot, and Myriam Tami

Ensemble of Local Decision Trees for Anomaly Detection in Mixed Data . . . 687Sunil Aryal and Jonathan R. Wells

Learning Algorithms and Applications

Optimal Teaching Curricula with Compositional Simplicity Priors. . . . . . . . . 705Manuel Garcia-Piqueras and José Hernández-Orallo

FedDNA: Federated Learning with Decoupled Normalization-LayerAggregation for Non-IID Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 722

Jian-Hui Duan, Wenzhong Li, and Sanglu Lu

The Curious Case of Convex Neural Networks . . . . . . . . . . . . . . . . . . . . . . 738Sarath Sivaprasad, Ankur Singh, Naresh Manwani, and Vineet Gandhi

UCSL : A Machine Learning Expectation-Maximization Frameworkfor Unsupervised Clustering Driven by Supervised Learning. . . . . . . . . . . . . 755

Robin Louiset, Pietro Gori, Benoit Dufumier, Josselin Houenou,Antoine Grigis, and Edouard Duchesnay

xl Contents – Part I

Efficient and Less Centralized Federated Learning. . . . . . . . . . . . . . . . . . . . 772Li Chou, Zichang Liu, Zhuang Wang, and Anshumali Shrivastava

Topological Anomaly Detection in Dynamic Multilayer BlockchainNetworks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 788

D. Ofori-Boateng, I. Segovia Dominguez, C. Akcora, M. Kantarcioglu,and Y. R. Gel

Author Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 805

Contents – Part I xli