Richard Cyganiak

Minor prefix.cc update: Namespace URIs ending with underscores “_” are now allowed.

New blog entry: Converting CSV to RDF with Tarql — quick and easy and, if you like, streaming. bobdc.com/blog/tarql/ (Thanks, @cygri and Boris P!)

Tiny prefix.cc update: URIs longer than 100 characters now are rejected with a helpful error message. Previously they were silently truncated. Happened twice in 10 years, according to the logs. First time it was ignored, second time a bug was reported—thanks @olea!

prefix.cc tweak: We now allow namespace URIs ending in underscores.

I've created a #SHACL processor langsamu.net/shacl for dotNetRDF github.com/dotnetrdf/dotn…. Fully compliant with SHACL Core and SHACL-SPARQL github.com/langsamu/SHACL…. Feedback most welcome.

@danbri @csarven Some discussion on the problems of SCOVO in section 4 of ceur-ws.org/Vol-628/ldow20… (we re-branded SDMX-RDF to Data Cube Vocabulary shortly after that paper)

@csarven is there a diff somewhere between SCOVO and the W3C Data Cube approach?

Proposal for representing Aggregate Statistical Data (for Schema.org) lists.w3.org/Archives/Publi… /cc @mr_dudders @linkedktk

@ewg118 The only account on my Twitter that talks about coins and it isn’t some crypto shit 👍

Someone asked on StackOverflow why it makes sense to put the creation date in the namespace URI of a vocabulary, as seen in rdf:, rdfs:, xsd: and many other vocabularies. My answer: It doesn't. stackoverflow.com/a/56500519/346…

A a questionnaire understanding the varying perspectives that exist within the Semantic Web gente :) Created by Aidan Hogan docs.google.com/forms/d/e/1FAI…

My colleague @_vhf is playing around with VS Code & our rdf-vocabularies package. Completion only to stuff that exists in RDF vocabularies & ontologies

@bobdc I do that too. But now as I think about it, wouldn’t the correct course of action be to enclose the URL in <...>?

@cygri Yes, and before most punctuation in email prose as well if the sentence ends with a URL because I'm tired of email clients thinking that the punctuation is part of the URL and the email recipient telling me that the URL didn't work.

SPARQL/Turtle style poll: Do you put a space before a statement-ending semicolon, and why?

@wohnjalker @fkraeutli No, the change would break existing queries so out of scope for SPARQL 1.2. Purely cosmetic changes won’t be well received in general.

@cygri @fkraeutli SPARQL 1.2?

@wohnjalker @fkraeutli I put the UNION keyword on a line of its own, but that is so wasteful

@wohnjalker @fkraeutli Yeah. To be elegant it would have to be the UNION keyword before each group, not just between the groups. That ship has sailed I’m afraid.

@tonyhammond @wohnjalker @fkraeutli Few new languages are case insensitive these days. SPARQL follows SQL here, which of course is not a modern language. ALLCAPS certainly has a retro feel.

@wohnjalker @fkraeutli Agree on always spaces before and after curlies. All lcase looks ugly IMO so I won’t do it, but at least it is consistent.

@cygri @fkraeutli I tend to lcase it all, spaces after optional and filter keywords, spaces in curlies { x }

@xchaotic Turtle syntax is not just used for data but also for query (in SPARQL) and schema and config and documentation and examples. Turtle syntax is very much a part of the “UX” of the RDF stack. And real data is in N-Triples anyways 🤓

@cygri HOT Take: even ttl is too verbose to be readable for any actual amounts of data so I just load it and hope it parses correctly. Eyeballing raw RDF is really last resort.

@wohnjalker @fkraeutli I do keywords in ALLCAPS, functions in camelCase. So, VALUES and FILTER but bound() and str() and if().

@cygri @fkraeutli VALUES or values?

@wohnjalker @fkraeutli I find it clearer without spaces. After the space comes the object.

@fkraeutli @cygri Spaces in property paths? foaf:knows/foaf:knows or foaf:knows / foaf:knows

@valexiev1 @KnowledgeGraph Damn. You made me google “nike” and now my internet will be full of shoe ads for half a year

google "Nike" returns the shoe, and "Jaguar" returns the car. It used to also return the @knowledgeGraph cards of Nike the goddess and Jaguar the animal. Is this indicative of the values of a new generation devolving towards consumerism? #LODLAM reversed