Takayasu Group. and TDB (Teikoku Databank, LTD) started collaboration from 2011 on analysis of TDB data of business firms, a comprehensive database of Japanese firms. As an early outcome, a new network model of business firms was proposed to describe firms' activity. This model has already been applied for practical use by some governmental agencies and banks. This center. (TDB-ADAM) was established November 2014 to deepen mathematical sciences on firms and to develop more practical applications.