Resource:
Running and Managing Duplicate Jobs - https://help.salesforce.com/articleView?id=duplicate_jobs_run_and_manage.htm&type=5
Resources:
Data.com Prospector - https://help.salesforce.com/articleView?id=data_dot_com_prospector_overview.htm&type=5
Data.com Clean Implementation Guide - https://resources.docs.salesforce.com/216/latest/en-us/sfdc/pdf/data_dot_com_clean_impl_guide.pdf