  Since 2004, researchers have been using the mathematical framework of Quantum
Theory (QT) in Information Retrieval (IR). QT offers a generalized probability
and logic framework. Such a framework has been shown capable of unifying the
representation, ranking and user cognitive aspects of IR, and helpful in
developing more dynamic, adaptive and context-aware IR systems. Although
Quantum-inspired IR is still a growing area, a wide array of work in different
aspects of IR has been done and produced promising results. This paper presents
a survey of the research done in this area, aiming to show the landscape of the
field and draw a road-map of future directions.
