Non-deterministic generation in tsv2owl

[SCVFlare]

Each generation of the owl form tsv2owl is unique. Even though the .tsv stays unchanged properties in owl restrictions get jumbled in a random order each generation. The following link showcases two generations side by side using the same .tsv: https://www.diffchecker.com/WXWT2Dek/

[VladimirAlexiev]

hi @SCVFlare ! As far as I can see, the diffs concern he order of blank nodes like this, right?

        rdfs:subClassOf   [ rdf:type            owl:Restriction ;
                            owl:maxCardinality  1 ;
                            owl:onProperty      s:creativeWorkStatus
                          ] ;

Here is the process:

• tsv2owl.pl dumps them in the same order it finds them in the sheet, eg

  s:CreativeWork rdfs:subClassOf [a owl:Restriction; owl:onProperty s:creativeWorkStatus; ; owl:maxCardinality 1].
  ...
  s:CreativeWork rdfs:subClassOf [a owl:Restriction; owl:onProperty s:primaryImageOfPage; ; owl:maxCardinality 1].

• Then the Makefile prettifies them using riot --formatted=ttl otkg-unformatted.ttl | perl -00e '@a=<>; print sort @a'
  • riot --formatted makes turtle "paragraphs"
  • perl then sorts the paragraphs alphabetically

At the level of paragraphs, this is deterministic. But inside a paragraph, riot can change the order of Restrictions because every time it runs, it allocates new blank node IDs, and I guess it sorts Restrictions by that. We have no control over this riot behavior.

For reproducibility, it's best to just use otkg-unformatted.ttl. It's ugly but predictable.