n-triples

How to load N-TRIPLE file in apache jena?

由 岁酱吖の 提交于 2019-12-11 00:54:33
问题 I am quite new to RDF and Jena. I want load a .nt (N- TRIPLE) file to a model. I have tried read(inputStream, "N-TRIPLE") but did not help. It throws org.apache.jena.riot.RiotException: Element or attribute do not match QName production: QName::=(NCName':')?NCName. Can anyone point me out what is wrong? Here is the link for the N-TRiple file which I tried to load : http://dbpedia.org/data/Berlin.ntriples 回答1: read(inputStream, string) uses the string argument as the base URI, not the syntax

Java n-triple RDF parsing

由 别说谁变了你拦得住时间么 提交于 2019-12-04 18:04:13
问题 I want to parse an RDF file which is in n-triple form. I can write my own parser but I would rather use a library, and Jena seems unecessarily complicated for this purpose (or at least I can't see their docs explaining how to read n-triples in a sensible way). Could you please either point me to any useful libraries or if you know either Sesame or Jena well, you might know something about how they can solve this. 回答1: If you just want to parse the NTriples and don't need to do anything other

Java n-triple RDF parsing

由 前提是你 提交于 2019-12-03 12:40:09
I want to parse an RDF file which is in n-triple form. I can write my own parser but I would rather use a library, and Jena seems unecessarily complicated for this purpose (or at least I can't see their docs explaining how to read n-triples in a sensible way). Could you please either point me to any useful libraries or if you know either Sesame or Jena well, you might know something about how they can solve this. If you just want to parse the NTriples and don't need to do anything other than basic processing and querying then you could try the NxParser . It is a very simple bit of Java code

What's a RDF triple?

由 纵饮孤独 提交于 2019-11-28 16:11:09
问题 In layman's terms, what's a RDF triple? 回答1: I think the question needs to be split into two parts - what is a triple and what makes an "RDF triple" so special? Firstly, a triple is, as most of the other commenters here have already pointed out, a statement in "subject/predicate/object" form - i.e. a statement linking one object (subject) to another object(object) or a literal, via a predicate. We are all familiar with triples: a triple is the smallest irreducible representation for binary

Querying Open Data Communities Data with SPARQL

由 对着背影说爱祢 提交于 2019-11-26 04:55:53
问题 I\'m trying to get some information from the Lower Layer Super Output Areas (LSOAs) and UK Postcodes datasets. I need the postal code and lsoa information in a data dump for excel use. Notation and Label of type \'Lower Layer Super Output Area\'. http://opendatacommunities.org/doc/geography/lsoa/E01009437 E.g. \'lsoa\' per each type \'Postcode Unit\' http://opendatacommunities.org/resource?uri=http%3A%2F%2Fdata.ordnancesurvey.co.uk%2Fid%2Fpostcodeunit%2FB721NB I have no idea how to use the
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