hrefna, (edited ) to random
@hrefna@hachyderm.io avatar

As I read through the discussions around the creation of and revisions around three things are clear in my eye.

  1. Usability was not the primary concern. It seems to have been widely believed that Other Tools™ would fill this gap and that RDF should focus first on a kind of expressibility.

  2. Those Other Tools™ never materialized.

  3. Most who use RDF-derived tooling seem to assume either that it gives them those tools or that Others™ will build them on top of their solution as well

jonny, to random
@jonny@neuromatch.social avatar
bblfish, to programming

2014 paper: "Inductive Representations of graphs" by @jelabra building on M. Erwig's 2001 paper on Inductive Graphs.
https://www.sciencedirect.com/science/article/pii/S0167642314000094
They wrote a implementation https://github.com/labra/wesin
and a one https://github.com/labra/haws
There is an interesting note on the Scala page regarding banana-rdf.

> Banana-RDF contains a more general library to work with RDF from Scala. It allows different underlying implementations like Jena and Sesame. A long term project will be to unify our work with that library.

I was actually just looking to see how I could update the pure Scala implementation to https://github.com/bblfish/banana-rdf
and after following links to Quiver a Scala library for Graphs based on Erwig's original paper very well described here
https://blog.higher-order.com/blog/2016/04/02/a-comonad-of-graph-decompositions/
See https://discord.com/channels/632277896739946517/839263668478672937/1123916208509571124

thisismissem, to random
@thisismissem@hachyderm.io avatar

The one thing that I think the RDF & semantic web folks have really missed the boat on is simple but intelligent authoring tools for contexts and schemas.

Like, I know the @w3c publishes a lot of contexts/prefixes, but I've no idea how. Guides for this always just seem to end at "you can"

jonny, to random
@jonny@neuromatch.social avatar

I have an increasing hunch that blank nodes in are just a local minimum byproduct of ppl insisting that all names need to be globally unique, and if u relax that then u can avoid a lot of the graph isomorphism probs at the expense of having some mechanism of referring to nodes relative to one another

konstantin, to programming

Does anyone know a "fast" local RDF store that can do SPARQL queries (or expose a SPARQL endpoint for queries + endpoint for adding triples)? I have a small tool using rdflib that needs to parse and query several very large graphs and I'd like to avoid deploying a dedicated triple store service.

judell, to llm
@judell@social.coop avatar

Knowledge graph, ontology, semantic metadata: always nice-to-have but never must-have because the payoff for investing was always speculative.

The argument here: that investment now enables LLMs to write SQL that answers business questions and delivers immedate, repeatable, and measurable benefits.

I never thought RDF was for humans and still don't, but I can see how it could provide the patterns the machines need to be better analytical assistants.

https://thedataexchange.media/knowledge-graphs-llm-sql-rag/

mielvds, to random

Looking for national or international examples on design and practice (preferably in the context of ). Any organisations that have documents, blogposts, diagrams, webpages, ... to share on this topic?

arnelson, to fediverse
@arnelson@fosstodon.org avatar

Java is an interesting language for a Fediverse project because it's the one language with several mature implementations of Semantic Web tech (RDF, SPARQL, etc). JSON-LD just works, out of the box. It was kind of shocking to see Apache Jena do in a few minutes of work what took me weeks in Deno!

And I learned about a piece of the Semantic Web ecosystem I wasn't familiar with before. Have you heard the good word of OWL?

dylanvanassche, to random
@dylanvanassche@fosstodon.org avatar

seminar on just started! Let's see if Knowledge Graphs are ready for the real world!

https://www.dagstuhl.de/en/seminars/seminar-calendar/seminar-details/24061

jonny, to random
@jonny@neuromatch.social avatar

stuff has this unique ability to just make me go "what"

What do RDF graphs mean? the options:
"a name means nothing"
"a name is a selection of one from all possible names"
"a name means the thing it refers to."
"a name means the thing that you get when you refer to it"

bro i'm just trying to store some data i did not know i would have to relitigate Searle with you

https://www.w3.org/TR/rdf11-datasets/#options

nichtich, to random
@nichtich@openbiblio.social avatar

Has anyone actually tried to aggregate diverse, decentralized data beyond basic lookup of URIs and beyond sticking to one and only ontology? Centralized aproaches like Wikidata and schema.org for Google Search don't count. Asking for a frustrated friend.

konstantin, to elixir

Ha! Yesterday, I learned how to do SPARQL queries to do funny things with turtle data. I'm not a data-minded person, but it feels like my world is a bit more semantically shaped now :hal:

And this is an excellent set of libraries to deal with RDF/SPARQL in Elixir https://rdf-elixir.dev/

jonny, to random
@jonny@neuromatch.social avatar

Reading how to represent ordered and tabular data in , wondered how that might work with multidimensional arrays, and think I have officially come up with the worst video encoding of all time.

Finally you can do SPARQL queries for values of individual pixels in a video.

Natureshadow, to fediverse

I am creating some ontologies that I will use for both my https://codeberg.org/Denkar.io/denkario knowledge graph and for my https://codeberg.org/Vocata/vocata server.

(In general, I will define ontologies for general purposes, but I will make them compatible with AP as well.)

Where should I root these namespaces?

  • Under one of my own domains?
  • Under some umbrella others in the are using?
  • Under my own domain, with a PURL redirect?

https://socialhub.activitypub.rocks/t/where-to-root-my-own-vocabularies/3163

yokofakun, to random
@yokofakun@genomic.social avatar

I wrote a short tutorial about how I manage my lab data (BAMS, genomes, fasta, samples, diseases, etc... ) with #RDF and #SPARQL https://github.com/lindenb/hts-rdf/

#semanticweb #datamanagement

hrefna, to random
@hrefna@hachyderm.io avatar

This impossibility conjecture is unsurprising to me.

https://arxiv.org/pdf/2209.04593.pdf

ivan_herman, to random
@ivan_herman@w3c.social avatar

A long overdue standard has now been published at W3C: "RDF Dataset Canonicalization". Essential for security related operations with RDF Datasets...

Note that the standard is published alongside 8 full implementations, which is great.

https://www.w3.org/news/2024/rdf-dataset-canonicalization-is-a-w3c-recommendation/

w3cdevs,
@w3cdevs@w3c.social avatar

👏 👏 Congrats to editors Dave Longley, @gkellogg and Dan Yamamoto for the newly published @w3c " Dataset Canonicalization"

!

▶️ https://www.w3.org/TR/rdf-canon/

yokofakun, to bioinformatics
@yokofakun@genomic.social avatar

I moved all my TSV files containing a descriptions of my BAMs, fasta refs, samples, phenotypes, comment etc... to a . No regret ! I works fine, the graph is git-ed and I can re-generate any TSV file using


naturzukunft, to fediverse
@naturzukunft@mastodon.social avatar
yokofakun, to random
@yokofakun@genomic.social avatar

After all those years, WHY didn't you tell me about recursive queries in that find all the descendants of a term in an ontology? https://gist.github.com/lindenb/2b0239f2237ce835fe2d2ddfc9ebeb02

lysander07, to llm

Many new and interesting topics in our upcoming - Foundations and Applications online lecture at

junesim63, to worldwithoutus
@junesim63@mstdn.social avatar

"The United States strongly condemns the attack (Friday) from Rwanda Defense Forces and M23 positions on the Mugunga camp for internally displaced persons in eastern Democratic Republic of the Congo," State Department spokesperson Matthew Miller said in a statement"

Good old Rwanda, that very safe country ( because the UK says so). Of course, the UK won't condemn this, as it's part of the Rwanda deportation deal not to.

#Rwanda #DRC #M23 #RDF #Africa #WarCrime

https://www.lemonde.fr/en/le-monde-africa/article/2024/05/04/us-blames-rwanda-for-deadly-attack-on-displaced-camp-in-dr-congo_6670419_124.html

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