1. Department of Information Management; Nanjing Agricultural University; Nanjing 210095 China
2. Research Center for Correlation of Domain Knowledge; Nanjing Agricultural University; Nanjing 210095 China
3. KU Leuven, Facultair Onderzoekscentrum ECOOM, Naamsestraat 61; Leuven B-3000 Belgium
4. University of Antwerp (UA), Faculty of Social sciences, Middelheimlaan 1; B-2020 Antwerp Belgium