... degrees of effectiveness. The purpose of this paper is to extend the DeLone and McLean’s Information Systems Success Model ( ISSM ) was extended with communication quality, decision quality and knowledge acquisition to understand the antecedents and outcomes of e-procurement usage. Design/methodology...

... a knowledge repository for further decision making and policy formulation. © MCB UP Limited 2000 Data mining Knowledge‐base construction Knowledge acquisition Policy making Journal of Systems & Information Technology 4(2) COMBINING DATA MINING AND HUMAN EXPERTISE FOR MAKING DECISIONS, SENSE...