Lecture Notes in Computer Science 12858 Founding Editors Gerhard Goos Karlsruhe Institute of Technology, Karlsruhe, Germany Juris Hartmanis Cornell University, Ithaca, NY, USA Editorial Board Members Elisa Bertino Purdue University, West Lafayette, IN, USA Wen Gao Peking University, Beijing, China Bernhard Steffen TU Dortmund University, Dortmund, Germany Gerhard Woeginger RWTH Aachen, Aachen, Germany Moti Yung Columbia University, New York, NY, USA More information about this subseries at http://www.springer.com/series/7409 Leong Hou U • Marc Spaniol • Yasushi Sakurai • Junying Chen (Eds.) Web and Big Data 5th International Joint Conference, APWeb-WAIM 2021 Guangzhou, China, August 23–25, 2021 Proceedings, Part I 123 Editors Leong Hou U Marc Spaniol University of Macau University of Caen Normandie Macau, China Caen, France Yasushi Sakurai Junying Chen Osaka University South China University of Technology Osaka, Japan Guangzhou, China ISSN 0302-9743 ISSN 1611-3349 (electronic) Lecture Notes in Computer Science ISBN 978-3-030-85895-7 ISBN 978-3-030-85896-4 (eBook) https://doi.org/10.1007/978-3-030-85896-4 LNCS Sublibrary: SL3 – Information Systems and Applications, incl. Internet/Web, and HCI © Springer Nature Switzerland AG 2021 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material 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 information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective 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 are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, expressed or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. This Springer imprint is published by the registered company Springer Nature Switzerland AG The registered company address is: Gewerbestrasse 11, 6330 Cham, Switzerland Preface This volume (LNCS 12858) and its companion volume (LNCS 12859) contain the proceedings of the fifth Asia-Pacific Web (APWeb) and Web-Age Information Man- agement (WAIM) Joint Conference on Web and Big Data, called APWeb-WAIM. With the increased focus on big data, the new joint conference is expected to attract more professionals from different industrial and academic communities, not only from the Asia-Pacific countries but also from other continents. The objective is to enable the sharing and exchange of ideas, experiences, and results in the areas of the World Wide Web and big data, thus covering web technologies, database systems, information management, software engineering, and big data. The fifth APWeb-WAIM conference was held in Guangzhou during August 23–25, 2021. As an Asia-Pacific flagship conference focusing on research, development, and applications in relation to Web information management, APWeb-WAIM builds on the successes of APWeb and WAIM: APWeb was previously held in Beijing (1998), Hong Kong (1999), Xi’an (2000), Changsha (2001), Xi’an (2003), Hangzhou (2004), Shanghai (2005), Harbin (2006), Huangshan (2007), Shenyang (2008), Suzhou (2009), Busan (2010), Beijing (2011), Kunming (2012), Sydney (2013), Changsha (2014), Guangzhou (2015), and Suzhou (2016); and WAIM was held in Shanghai (2000), Xi’an (2001), Beijing (2002), Chengdu (2003), Dalian (2004), Hangzhou (2005), Hong Kong (2006), Huangshan (2007), Zhangjiajie (2008), Suzhou (2009), Jiuzhaigou (2010), Wuhan (2011), Harbin (2012), Beidaihe (2013), Macau (2014), Qingdao (2015), and Nanchang (2016). The APWeb-WAIM conferences were held in Beijing (2017), Macau (2018), Chengdu (2019), and Tianjin (2020). With the fast development of web-related technologies, we expect that APWeb-WAIM will become an increas- ingly popular forum that brings together outstanding researchers and developers in the fields of the Web and big data from around the world. The high-quality program documented in these proceedings would not have been possible without the authors who chose APWeb-WAIM for disseminating their find- ings. A total of 184 submissions were received and, after the double-blind review process (each paper received at least three review reports), the conference accepted 44 regular papers (23.91%), 24 short research papers, and 6 demonstrations. The con- tributed papers address a wide range of topics, such as graph mining, data mining, data management, topic model and language model learning, text analysis, text classifica- tion, machine learning, knowledge graphs, emerging data processing techniques, information extraction and retrieval, recommender systems, and spatial and spatio-temporal databases. The technical program also included keynotes by M. Tamer Özsu (University of Waterloo, USA), Huan Liu (Arizona State University, Tempe, USA), X. Sean Wang (Fudan University, China), and Xiaokui Xiao (National University of Singapore, Singapore). We are grateful to these distinguished scientists for their invaluable contributions to the conference program. As a joint conference, teamwork is particularly important for the success of APWeb-WAIM. We are deeply vi Preface thankful to the Program Committee members and the external reviewers for lending their time and expertise to the conference. Special thanks go to the local Organizing Committee led by Yi Cai. Thanks also go to the workshop chairs (Yunjun Gao, An Liu, and Xiaohui Tao), demo chair (Yanghui Rao), industry chair (Jianming Lv), tutorial chair (Raymond Chi-Wing Wong), publication chair (Junying Chen), local arrange- ment chairs (Guohua Wang and Junying Chen), and publicity chairs (Xin Wang and Jianxin Li). Their efforts were essential to the success of the conference. Last but not least, we wish to express our gratitude to the Webmaster (Jianwei Lu), for all the hard work, and to our sponsors who generously supported the smooth running of the conference. We hope you enjoy the exciting program of APWeb-WAIM 2021 as documented in these proceedings. July 2021 Yi Cai Tom Gedeon Qing Li Baltasar Fernández Manjón Leong Hou U Marc Spaniol Yasushi Sakurai Organization Organizing Committee General Chairs Yi Cai South China University of Technology, China Tom Gedeon Australia National University, Australia Qing Li Hong Kong Polytechnic University, China Baltasar Fernández Manjón UCM, Spain Program Committee Chairs Leong Hou U University of Macau, China Marc Spaniol Université de Caen Normandie, France Yasushi Sakurai Osaka University, Japan Workshop Chairs Yunjun Gao Zhejiang University, China An Liu Soochow University, China Xiaohui Tao University of Southern Queensland, Australia Demo Chair Yanghui Rao Sun Yat-sen University, China Tutorial Chair Raymond Chi-Wing Wong Hong Kong University of Science and Technology, China Industry Chair Jianming Lv South China University of Technology, China Publication Chair Junying Chen South China University of Technology, China viii Organization Publicity Chairs Xin Wang Tianjin University, China Jianxin Li Deakin University, Australia Local Arrangement Chairs Guohua Wang South China University of Technology, China Junying Chen South China University of Technology, China Webmaster Jianwei Lu South China University of Technology, China APWeb-WAIM Steering Committee Representative Yanchun Zhang Victoria University, Australia Senior Program Committee Members Feida Zhu Singapore Management University, Singapore Lei Chen Hong Kong University of Science and Technology, China Mizuho Iwaihara Waseda University, Japan Peer Kroger Christian-Albrechst-University Kiel, Germany Reynold Cheng The University of Hong Kong, China Wolf-Tilo Balke TU Braunschweig, Germany Xiang Zhao National University of Defence Technology, China Yunjun Gao Zhejiang University, China Zhiguo Gong University of Macau, China Program Committee Members Alex Delis University of Athens, Greece An Liu Soochow University, China Aviv Segev KAIST, Korea Baoning Niu Taiyuan University of Technology, China Bin Cui Peking University, China Bo Tang Southern University of Science and Technology, China Bohan Li Nanjing University of Aeronautics and Astronautics, China Bolong Zheng Huazhong University of Science and Technology, China Carson K. Leung University of Manitoba, Canada Cheqing Jin East China Normal University, China Chih-Hua Tai National Taipei University, China Organization ix Defu Lian University of Electronic Science and Technology of China, China Dhaval Patel IBM TJ Watson Research Center, USA Dimitris Sacharidis ULB, Belgium Giovanna Guerrini University of Genoa, Italy Guoqiong Liao Jiangxi University of Finance and Economics, China Haibo Hu Hong Kong Polytechnic University, China Hailong Sun Beihang University, China Haiwei Zhang Nankai University, China Han Su University of Southern California, USA Hao Wang Nanjing University of Information Science and Technology, China Hiroaki Ohshima University of Hyogo, Japan Hongzhi