📢 #ABECTO version 3.1.5 has been released:
🔗 https://github.com/fusion-jena/abecto/releases/tag/v3.1.5
ABECTO is an #OpenSource #CLI tool that compares #RDF graphs to spot errors 🪲 and assess completeness 📊 intended for use in #CICD pipelines.
Versions 3.1.3, 3.1.4, & 3.1.5 add rudimentary HTTP rate limit handling, some bug fixes, and (most important) a descriptive HTTP user-agent to cope with the #Wikidata query service (#WDQS) user-agent policy 🛂.
With ABECTO 3.1.5, I restored regular pushes of space travel data deviations between #Wikidata and #DBpedia to https://mismatch-finder.toolforge.org @nightrose. But it provides (at first glance) strange results (🔗 https://mismatch-finder.toolforge.org/results?ids=Q107667|Q115651852), like:
➡️ John Young member of the crew of Apollo 16 mismatches http://dbpedia.org/resource/Apollo_16
➡️ SpaceX Crew-10 crew member Anne McClain mismatches http://dbpedia.org/resource/Anne_McClain
Reason: Missing http://dbpedia.org/ontology/SpaceMission, http://dbpedia.org/ontology/Astronaut, … type statements in @dbpedia.
Remarkably:
➡️ Despite the lack of #DBpedia types, equivalent #Wikidata types are present in DBpedia.
➡️ Not all resources are affected: e.g. https://dbpedia.org/page/John_Young_(astronaut) is typed as http://dbpedia.org/ontology/Astronaut.
➡️ Right and wrong typed astronauts have the astronaut infobox (which is properly mapped https://mappings.dbpedia.org/index.php/Mapping_en:Infobox_astronaut) on #Wikipedia.
I guess an extractor bug 🪲.
Side effect: Many astronauts are displayed as "animals". Although on might consider this as ontologically correct, it is quiet odd.
Surprisingly, I could not find an Issue about this #DBpedia problem. Now there is one: https://github.com/dbpedia/extraction-framework/issues/820
Contrary to my initial guess of an extractor bug, further investigations made an SPARQL endpoint (#openlinksw #virtuoso) bug seem more likely.
Issue validity Could not check, due to DIEF ERROR 502 response. Error Description Many resources are missing some rdf:type statements. Pinpointing the source of the error It affects the SPARQL (htt...
Jan Martin Keil