That large data set allowed them to analyze information for the 50 U.S.states separately, and also to identify trends by race and gender.
VOA: standard.2010.08.10
Then the system asked me to insert my passport so it could optically scan the special set of letters to identify me with the system and transmit the data to the Department of Homeland Security.
In the unstructured data world, especially text, the big trend is predictive coding or predictive analytics that identify high-risk communications, flag them for followup and use machine learning to train a dataset.