Gao Cong 0 2 3 4 5 Maya Ramanath 0 1 3 4 5 Maya Ramanath 0 3 4 5 IIT Delhi 0 3 4 5 Gao Cong, Nanyang Technological University Georgios Drakopoulos, Ionian University , Greece IIT Delhi, Department of Computer Science and Engg. , New Delhi - 110016 , India Nanyang Technological University, School of Computer Science and Engineering , Singapore 639798 Guanfeng Liu, Macquarie University, Australia • Kim-Kwang Raymond Choo, The University of Texas at San Antonio, USA • Hongzhi Yin, The University of Queensland, Australia • Deepak Puthal, Newcastle University, UK • Chi Yang, Huazhong University of Science and Technology, China • Xuyun Zhang, Macquarie University , Australia Juan José del Coz, Artificial Intelligence Center University of Oviedo, Spain • Pablo González, Artificial Intelligence Center University of Oviedo, Spain • Alejandro Moreo, Istituto di Scienza e Tecnologie dell'Informazione Consiglio Nazionale delle Ricerche Pisa, Italy • Fabrizio Sebastiani, Istituto di Scienza e Tecnologie dell'Informazione Consiglio Nazionale delle Ricerche Pisa , Italy Vasudev Lal, Intel Labs, USA • Somak Aditya, Microsoft Research , India • Yezhou Yang, ASU, USA • Pasquale Minervini, UCL , UK • Sandya Mannarswamy , Intel , India 2021 1 5

Nine workshops were accepted to this edition: All workshops provide interdisciplinary forums for academics and industry experts from different background areas such as computer science, machine learning, information science, psychology, finance, biology, data mining, to exchange latest research ideas, discuss on open challenges and facilitate cross-disciplinary collaborations. We would like to thank all authors, participants and workshop organisers for their contributions and supports to this edition. We sincerely hope that the papers of the CIKM 2021 workshops will benefit researchers for future development.

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CIKM’2021 Workshops included in this proceedings We list the CIKM’2021 workshops (with their organisers) which the papers accepted for presentation and publications are included in this proceedings as following. (CDCEO’21) 1st Workshop on Complex Data Challenges in Earth Observation • Aleksandra Gruca, Silesian University of Technology, Poland • Pedro Herruzo, Institute of Advanced Research in Artificial Intelligence, Austria • Pilar Rípodas, Spanish Meteorological Agency, Spain • Pedram Ghamisi, Institute of Advanced Research in Artificial Intelligence, Austria;

Helmholtz-Zentrum Dresden-Rossendorf, Germany • Christian Briese, Earth Observation Data Centre for Water Resources Monitoring,

Austria • Andrzej Kucik, Φ-lab, European Space Agency, Italy • Michael Kopp, Institute of Advanced Research in Artificial Intelligence, Austria; Here

Technologies, Switzerland • David Kreil, Institute of Advanced Research in Artificial Intelligence, Austria • Sepp Hochreiter, Institute of Advanced Research in Artificial Intelligence, Austria (IWILDS’21) 2nd Workshop on Investigating Learning During Web Search • Irina Brich, IWM - Leibniz-Institut für Wissensmedien, Germany • Anett Hoppe, TIB - Leibniz Information Centre for Science & Technology, Germany • Jiqun Liu, University of Oklahoma, USA • Ran Yu, GESIS – Leibniz Institute for the Social Sciences, Germany (KDAH-CIKM-2021) 4th Workshop on Knowledge-driven Analytics and Systems Impacting Human Quality of Life • Leandro Marin, University of Murcia, Spain • John Farserotu, Centre Suisse d'Electronique et de Microtechnique (CSEM),

Switzerland • Antonio Jara, University of Applied Sciences Western Switzerland (HES-SO),

Switzerland • Arijit Ukil, TCS Research, Tata Consultancy Services, India KINN’21: 1st Workshop on Knowledge Injection in Neural Networks • • •

 Marco Beccuti, University of Turin, Italy

Vincenzo Bonnici, University of Verona, Italy

Rosalba Giugno, University of Verona, Italy MUFin21: International Workshop on Modelling Uncertainty in the Financial World PSTCI2021: International Workshop on Privacy, Security and Trust in Computational Intelligence Learning to Quantify: Methods and Applications (LQ 2021) THECOG - Transforms in beHavioral and affectivE COmputinG • •

 Eleanna Kafeza, Zayed University, UAE