Trust - data reliabilityTrust = level of reliability of an information.
Five levels of reliability are defined in g5 :
1 - Hospital Certificate (HC)Original document available and verifiable by anyone.
2 - Birth Certificate (BC)Original document available and verifiable by anyone.
3 - Birth Record (BR)(= copy of the BC by an officer - may contain mistakes)
Original document available and verifiable by anyone.
4 - Reputed correctFor persons born before the apparition of birth certificates.
BC is not available, but this birth time is attested by a document, and birth time is consensual (which is an ambiguous definition).
This level is mainly used for members of royal families.
5 - To checkData not related to an official document, like Gauquelin, Müller data, or data found on the web.
Need to be matched against a BC.
Most data handled by g5 are level 5, very few are level 2.
Note : as far as France is concerned, it's possible today to check BCs online. But at Gauquelin and Müller epoch, they had 2 possibilities : go physically to the archives and consult BCs, or send a letter and receive BRs. It means that Gauquelin and Müller data are mostly based on BRs. And a BR may differ from the original BC because the officer can make an error of copy, or copy the time of registration instead of the time of birth.
Raw data used by g5 may contain errors from different origins :
- Copy error from the officer who established a BR.
- Gauquelin or Müller error when integrating the BR in their files.
- Error when original paper files where put in an electronic form (for example the error on GNR in Müller 1083 physicians).
- Bugs in g5 program should be added to this list...
G5 integrationPersons have a field to express reliability, trust.
When a person is imported in database, it takes by default the trust level of its source.