Knowledge sharing and rewards: a game-theoretical perspective

Shared databases are used as tools for knowledge management. But contributing knowledge to the database is a public-goods dilemma. Its specific features are multidimensionality of the goods, resource overlap, interdependency of group members and the lack of a marginal unit of return for individual contributions. An analytical model is presented describing the individual- and group-level payoff function. It shows that rewarding contributions with a cost-compensating bonus can be an effective solution not only at the individual level, but also at the group level. Whether or not a bonus system is self-supporting depends on the critical mass of people on average needing a contribution. This depends on the overlap of the people's resources and their interdependency.