CrowdAnnotationAggregator is a Java Library that allow to aggregate the annotations of a crowdsourcing system regardless of the specific type of annotations.
This system aggregates annotations that come from different users on the same object/content. It requires every object to be annotated by at least 3 users. It requires every user to annotate at least 3 objects. It requires every user to annotate every object at most 1 time. Every annotation that does not follow this rules will be rejected.