N3

[ktk]

I knew N3 is used as a rule language but I only had a look at stuff like SWRL, RIF & Datalog so far. So I thought can't be that hard and tried to see how I would map some stuff I do in CONSTRUCTS.

I'm not sure if I'm doing something wrong but all I find about N3 is stone old. It's very nice to read what timbl thought about back then but it's miles away from documentation of nowadays standards in RDF. And I can't seem to find any example of how I would map stuff like BIND to N3 rules or do things like aggregations.

So am I missing the magic documentation about N3 rules somewhere? The things I've read in the past hour were really interesting from a historical POV but it doesn't really help much for solving problems I have.

[pbonte]

Hi @ktk ,

You can find the updated N3 spec here.
Indeed, somehow, the documentation is hard to find, I'll add it the README as well, thanks for pointing out.

Note however, that at this point RoXi does not implement the whole N3 spec yet. Basically we do datalog rules in N3 syntax. This means that we support rules with conjunctions in the body and only variables in the head of the rule that are also in the body. We are looking to support the built-in functions of N3 as well, but at this point they are not there yet.

If there is something crucial missing to realise one of your use cases, please let me know, then we can give it more priority

[ktk]

Ah thanks that looks a lot more readable, I see Dörthe is working on this as well, great.

But how do I do stuff like creating new IRIs which I would do with something like BIND & string concat etc in SPARQL?

We should definitely have a talk, I'm a bit in end of the year project conclusion stress but I will get back to you ASAP.