Re: Annotations in RDF-star: Vocabulary

Franconi Enrico <  franconi@inf.unibz.it >:   On 5 Jan 2023, at 16:53,   ddooss@wp.pl  wrote:  The
 need to attach temporal, uncertainty, and provenance annotations to RDF
 is crucial for real-world applications, and it is a key feature of 
RDF-star.  I don’t really know 
anything about the past discussions about RDF-star, however I’d say that
 the use of reification as an annotation tool is misleading, for two 
reasons (one foundational, and the second practical):  annotation is a case of modal predication,  Yes,
 and I do not see any problem here. There are a few research papers 
about it [1][2][3][4]. I agree that there is another issue how to 
combine with semantics and RDF Schema.   in
 RDF-star you reify only one triple, not a set of triples, which is the 
general case for annotations; N3 would be a more appropriate language to
 deal with annotations.   I don't see any problem here either. Usually, the annotations refer to a single RDF triple.   But yes, if you want to annotate many, it's probably better to use named graphs and/or N3.   Best,  Dominik   1. Hogan, A., et al. "RDF needs annotations." Proceedings of W3C Workshop—RDF Next Steps. W3C. 2010.  2.
 Udrea, Octavian, Diego Reforgiato Recupero, and V. S. Subrahmanian. 
"Annotated rdf." ACM Transactions on Computational Logic (TOCL) 11.2 
(2010): 1-41.  3. Gutierrez, Claudio, Carlos Hurtado, and 
Alejandro Vaisman. "Temporal rdf." European Semantic Web Conference. 
Springer, Berlin, Heidelberg, 2005.  4. Motik, Boris. 
"Representing and querying validity time in RDF and OWL: A logic-based 
approach." International Semantic Web Conference. Springer, Berlin, 
Heidelberg, 2010.