Record Linkage Approaches in Big Data: A Comprehensive Review

Analyzing data and making the right decisions have become crucial objectives in various domains. Record linkage is one of the most important processes for guaranteeing good data quality for analysis. The aim of record linkage is to find records in a dataset that represent the same real-world entity across many different data sources. This process becomes complex in the context of Big Data due to the high volume, variety of sources, and rapid velocity of data. This paper provides a comprehensive review of record linkage processes that can be adaptable to big data, the challenges and issues involved, and the limitations that remain. We give a comparative study of parallel processing approaches for big data that can reduce the execution time of record linkage processes such as Hadoop MapReduce, Apache Spark, and Apache Flink. We find that these last two technologies are more efficient on several characteristics such as data processing, performance, optimization, processing speed, and real-time analysis.