Ingwersen (1996) also focuses on information retrieval aspects of human information
behavior. Stressing the cognitive perspective, Ingwersen proposes a polyrepresentation
approach. That is, the individual user’s cognitive space, including work task or interest, current
cognitive state, problem or goal, uncertainty, information need and information behavior, and the
social or organizational environment, including domains, strategies or goals, and tasks and
preferences, should be represented in IR systems