The role of semantic information systems in today`s enterprises is manifold: It ranges from the support of day-to-day operations up to the level of strategic management and business decision-making. The use of visualisation techniques, therefore, marks an important aspect of these systems....

We study platform markets in which the information about users' preferences is dispersed. First, we show how the dispersion of information introduces idiosyncratic uncertainty about participation decisions and how the latter shapes the elasticity of the demands and the equilibrium prices. We...