International Conference on Big Data and Block chain (BDAB 2020) April 25~26, 2020, Copenhagen, Denmark https://acsty2020.org/bdab/index.html Scope International Conference on Big Data and Block chain (BDAB 2020) will act as a major forum for the presentation of innovative ideas, approaches, developments, and research projects in the areas of Big Data and Block chain. It will also serve to facilitate the exchange of information between researchers and industry professionals to discuss the latest issues and advancement in the area of Big Data and Block chain. Topics of interest include, but are not limited to, the following Big Data Big Data Techniques, models and algorithms Big Data Infrastructure and platform Big Data Search and Mining Big Data Security, Privacy and Trust Big Data Applications, Bioinformatics, Multimedia etc Big Data Tools and systems Big Data Mining Big Data Management Cloud and grid computing for Big Data Machine Learning an...