Active Opinion Maximization in Social Networks Xinyue Liu, Xiangnan Kong and Philip S. Yu Worcester Polytechnic Institute, University of Illinois at Chicago Product Like Like Like Like Like observed opinions on target product and other products Influence Diffusion Expressed Opinion The Target Social Network budget=k 1 budget=k 2 Objective: Finding the optimal seed selection that maximizes the total opinion spread. Diffusion Continues … … … Seed Selection Next Round Seed Selection Update Update updated In round 1