High Quality Content by WIKIPEDIA articles! Record linkage (RL) refers to the task of finding entries that refer to the same entity in two or more files. Record linkage is an appropriate technique when you have to join data sets that do not have a unique database key in common. A data set that has undergone record linkage is said to be linked. Record linkage is a useful tool when performing data mining tasks, where the data originated from different sources or different organizations. Most commonly, performing RL on datasets involves joining records of persons based on name, since no National identification number or similar is recorded in the data. In mathematical graph theory, record linkage can be seen as a technique of resolving bipartite graphs.

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