BDSIC 2021 information: 1. BDSIC 2021 is supported by ACM Singapore Chapter, Singapore Institute of Electronics and HuaQiao University, Xiamen, China2. All peer reviewed and accepted papers, after presentation, will be published into the International Conference Proceedings Series by ACM (ISBN: 978-1-4503-9055-2), which will be indexed by Ei Compendex and Scopus, and to be submitted and reviewed by Thomson Reuters Conference Proceedings Citation Index (CPCI). 3. Keynote speakers: Prof. Chin-Chen Chang, Feng Chia University, Taiwan Prof. Chuan Qin,University of Shanghai for Science and Technology, China Prof. Cheng-Zhong XU (IEEE Fellow),University of Macau, China4. The history of BDSIC conference:BDSIC 2019 received submissions from all over the world and was successfully held in Wuhan,China during October 18-20, 2019.All the conference papers of BDSIC 2019 is archived in the ACM Digital Library on December 26, 2019 and have been indexed by Ei Compendex, Scopus on March 25, 2020.Due to COVID-19 situation,BDSIC 2020 was held online during December 3-5, 2020.