1 Introduction
2 Uncertainty in Event Recognition
2.1 Data Uncertainty
2.2 Pattern Uncertainty
3 Scope of the Survey
3.1 Probabilistic Models
3.2 Time Representation
3.3 Relational Models
4 Evaluation Dimensions
4.1 Representation
4.2 Inference
4.3 Performance
5 Approaches
5.1 Automata-based Methods
5.2 First-order Logic & Probabilistic Graphical Models
5.3 Petri Nets
5.4 Grammars
6 Discussion