The Genealogical Proof Standard (GPS) is a guideline for establishing the reliability ("proof") of a genealogical conclusion with reasonable certainty.
[1] It is important within the genealogical community for clearly communicating the quality of research performed, such as by a professional genealogist.
It is also useful for helping new genealogists understand what is needed to do high-quality research, how to identify an individual and establish family relationships.
[2] It has five elements: