You use address reference data when you want to validate the postal accuracy of an address or fix errors in an address. Use the Address Validator transformation to perform address validation.

You use identity population data when you want to perform duplicate analysis on identity data. An identity is a set of values within a record that collectively identify a person or business. Use a Match transformation or Comparison transformation to perform identity duplicate analysis.

You use probabilistic or classifier model data when you want to identify the type of information that a string contains. Use a probabilistic model in a Parser or Labeler transformation. Use a classifier model in a Classifier transformation. Probabilistic models and classifier models use probabilistic logic to identify or infer the type of information in the string. Use a Classifier transformation when each input string contains a significant amount of data.

You use reference tables to verify the accuracy or structure of input data values in data quality transformations.