Determining the association between data objects may be accomplished using any of a variety of systems and techniques. In particular implementations, a system and technique may have the ability to receive a group of data objects and execute a matching algorithm to determine duplicate data object propositions between the data objects. The system and technique also may have the ability determine whether a data object is a potential duplicate data object and, if a data object is a potential duplicate data object, determine whether the data object is a duplicate data object by examining duplicate data object propositions of a plurality of data objects that are associated with the data object through duplicate data object propositions.