Re: Temporal validity: alternative for dcterms:valid?

2016-01-27 10:05 GMT+01:00 Svensson, Lars <l.svens...@dnb.de>: > Hi Frans, > > On Thursday, January 21, 2016 1:28 PM, Frans Knibbe wrote: > > > I notice a friction between a standard for a temporal property > (dcterms:valid in > > this case) and standards for

Re: Temporal validity: alternative for dcterms:valid?

should allow any of the > date/time-datatypes in xsd. > > [1] http://www.loc.gov/standards/datetime/pre-submission.html#interval > > /Lars > > > -Original Message- > > From: Svensson, Lars [mailto:l.svens...@dnb.de] > > Sent: Wednesday, 13 January 201

Temporal validity: alternative for dcterms:valid?

Hello again, The DCMI Metadata Terms vocabulary seems to have all the basic ingredients for building a versioning mechanism in to a dataset (which is or should be a very common requirement). Objects in a dataset can have life spans

How can I link a resource to an event?

Hello, This is a question about events, something that happens or happened at some time. I have found several ways of describing events in Linked Data: - use The Simple Event Model Ontology - use The Event Ontology

Re: Recommendation for transformation of RDF/XML to JSON-LD in a web browser?

nld.js <https://github.com/digitalbazaar/jsonld.js>, because it allows transforming to a specific flavour of JSON-LD: flattened form. I hope I can transform into that specific form because rdf-ext incorporates jsonld.js. Regards, Frans 2015-09-03 16:19 GMT+02:00 Frans Knibbe <frans.k

Recommendation for transformation of RDF/XML to JSON-LD in a web browser?

Or use a server side component? And in the case of a server side component, which programming environment could be recommended? Python? Node.js? Any general or specific advice would be welcome. Greetings, Frans -- Frans Knibbe Geodan President Kennedylaan 1 1079 MB Amsterdam (NL) T +31 (0)20 - 5711

Re: How to model valid time of resource properties?

/76490481.pdf On 13 Oct 2014, at 14:16, Sarven Capadisli i...@csarven.ca mailto:i...@csarven.ca wrote: On 2014-10-13 13:54, Frans Knibbe | Geodan wrote: Hello! I wonder if a way of recording changes in properties of resources can be recommended. Many resources in real life have properties

Re: How to model valid time of resource properties?

://twitter.com/kidehen Google+ Profile:https://plus.google.com/+KingsleyIdehen/about LinkedIn Profile:http://www.linkedin.com/in/kidehen Personal WebID:http://kingsley.idehen.net/dataspace/person/kidehen#this Frans Knibbe

Re: How to model valid time of resource properties?

#this Frans Knibbe Geodan President Kennedylaan 1 1079 MB Amsterdam (NL) T +31 (0)20 - 5711 347 E frans.kni...@geodan.nl www.geodan.nl http://www.geodan.nl | disclaimer http://www.geodan.nl/disclaimer

Re: How to model valid time of resource properties?

On October 13, 2014 at 1:54 PM Frans Knibbe | Geodan frans.kni...@geodan.nl wrote: Hello! I wonder if a way of recording changes in properties of resources can be recommended. Many resources in real life have properties that have a time range of being valid. In some datasets, only the current (or most

Re: How to model valid time of resource properties?

On 2014-10-13 14:16, Sarven Capadisli wrote: On 2014-10-13 13:54, Frans Knibbe | Geodan wrote: Hello! I wonder if a way of recording changes in properties of resources can be recommended. Many resources in real life have properties that have a time range of being valid. In some datasets, only

Re: How to model valid time of resource properties?

Frans Knibbe Geodan President Kennedylaan 1 1079 MB Amsterdam (NL) T +31 (0)20 - 5711 347 E frans.kni...@geodan.nl www.geodan.nl http://www.geodan.nl | disclaimer http://www.geodan.nl/disclaimer

Re: How to model valid time of resource properties?

mailto:i...@csarven.ca wrote: On 2014-10-13 13:54, Frans Knibbe | Geodan wrote: Hello! I wonder if a way of recording changes in properties of resources can be recommended. Many resources in real life have properties that have a time range of being valid. In some datasets, only the current (or most

How to model valid time of resource properties?

Frans Knibbe Geodan President Kennedylaan 1 1079 MB Amsterdam (NL) T +31 (0)20 - 5711 347 E frans.kni...@geodan.nl www.geodan.nl http://www.geodan.nl | disclaimer http://www.geodan.nl/disclaimer

Re: What happened to my trusted Turtle validator and converter?

Frans Knibbe Geodan President Kennedylaan 1 1079 MB Amsterdam (NL) T +31 (0)20 - 5711 347 E frans.kni...@geodan.nl www.geodan.nl http://www.geodan.nl | disclaimer http://www.geodan.nl/disclaimer

What happened to my trusted Turtle validator and converter?

I got a HTTP error and today I am redirected to a blog about RDF. What has happened to the validator? Will it be back? Is there an alternative somewhere? Regards, Frans Frans Knibbe Geodan President Kennedylaan 1 1079 MB

Re: How to publish SPARQL endpoint limits/metadata?

at how best to model them. Perhaps something we could do on the list? Cheers, L. On Tue, Oct 8, 2013 at 10:46 AM, Frans Knibbe | Geodan frans.kni...@geodan.nl wrote: Hello, I am experimenting with running SPARQL endpoints and I notice the need to impose some limits to prevent overloading

Re: {a draft proposal} How to publish SPARQL endpoint limits/metadata?

Hello Ghislain, Thank you very much for your efforts! To my amateur eyes it looks like just the sort of thing that is needed, should it be widely adopted. As for the details, I tried to form a better understanding of the SPARQL 1.1 Service Description

Re: How to publish SPARQL endpoint limits/metadata?

On 9-10-2013 14:07, Hugh Glaser wrote: On 9 Oct 2013, at 12:46, Barry Norton barrynor...@gmail.com wrote: On Wed, Oct 9, 2013 at 12:15 PM, Hugh Glaser h...@ecs.soton.ac.uk wrote: [...] So having a separation between SPARQL Service Description and voiD would just be plain wrong. They must

Re: How to publish SPARQL endpoint limits/metadata?

this. This might make a nice little community project. It would be useful to itemise a list of the type of limits that might be faced, then look at how best to model them. Perhaps something we could do on the list? Cheers, L. On Tue, Oct 8, 2013 at 10:46 AM, Frans Knibbe | Geodan frans.kni...@geodan.nl

How to publish SPARQL endpoint limits/metadata?

Hello, I am experimenting with running SPARQL endpoints and I notice the need to impose some limits to prevent overloading/abuse. The easiest and I believe fairly common way to do that is to LIMIT the number of results that the endpoint will return for a single query. I now wonder how I can

Re: How to publish SPARQL endpoint limits/metadata?

, Barry Norton wrote: Frans, SPARQL 1.1 introduced the notion of Service Descriptions [1]. Although these probably don't go far enough in the standard they are, I believe, extensible. Barry [1] http://www.w3.org/TR/sparql11-service-description/ On Tue, Oct 8, 2013 at 10:46 AM, Frans Knibbe

Re: How to publish SPARQL endpoint limits/metadata?

Hello Ghislain, On 8-10-2013 12:16, Ghislain Atemezing wrote: Hi Frans, I am experimenting with running SPARQL endpoints and I notice the need to impose some limits to prevent overloading/abuse. The easiest and I believe fairly common way to do that is to LIMIT the number of results that

Re: How to publish SPARQL endpoint limits/metadata?

of Service Descriptions [1]. Although these probably don't go far enough in the standard they are, I believe, extensible. Barry [1] http://www.w3.org/TR/sparql11-service-description/ On Tue, Oct 8, 2013 at 10:46 AM, Frans Knibbe | Geodan frans.kni...@geodan.nl mailto:frans.kni...@geodan.nl

Re: Minimizing data volume

, at 4:09 PM, Frans Knibbe | Geodan wrote: The problem that I see is how to handle those cases where geometry literals become unwieldy. The GeoSparql specification that you mention provides a way of writing a geometry as a literal in RDF. There may be several approaches as to how to serialize

Re: Minimizing data volume

in a query. The method should work with performance gains in those cases too. Regards, Frans On Mon, Sep 9, 2013 at 10:47 AM, Frans Knibbe | Geodan frans.kni...@geodan.nl wrote: Hello, In my line of work (geographical information) I often deal with high volume data. The high volume is caused

Re: Minimizing data volume

, but as far as I can tell it only applies to single points. Regards, Frans Andy http://www.geog.leeds.ac.uk/people/a.turner/ *From:*Frans Knibbe | Geodan [mailto:frans.kni...@geodan.nl] *Sent:* 10 September 2013 11:11 *To:* Leigh Dodds *Cc:* public-lod community *Subject:* Re: Minimizing data

Minimizing data volume

Hello, In my line of work (geographical information) I often deal with high volume data. The high volume is caused by single facts having a big size. A single 2D or 3D geometry is often encoded as a single text string and can consist of thousands of numbers (coordinates). It is easy to see

Re: Minimizing data volume

On 9-9-2013 12:30, Sarven Capadisli wrote: On 09/09/2013 11:47 AM, Frans Knibbe | Geodan wrote: Hello, In my line of work (geographical information) I often deal with high volume data. The high volume is caused by single facts having a big size. A single 2D or 3D geometry is often encoded

Re: best practice in assigning URIs to individuals

Hello, I hope understand the question, but wouldn't the second option (d2:R rdf:type d2:C2) result in an URI that can not be dereferenced because the resource does not exist at the external server? If that is true, I believe one 'official' rule that would be broken is the third principle of

Re: Civic apps and Linked Data

to learning SQL. Many developers know a bit of SQL. You do not need to know everything to get things done. Alvaro Graves-Fuenzalida Web: http://graves.cl - Twitter: @alvarograves On Wed, Jun 26, 2013 at 11:45 AM, Frans Knibbe | Geodan frans.kni...@geodan.nl mailto:frans.kni...@geodan.nl wrote

Re: Civic apps and Linked Data

Hello Alvaro, I think a big reason is the lack of data. I believe that if governmental institutions in my country would publish their data as five star data there would be a boom in development of civic apps, and in the publication of other data sets as Linked Data too. As things stand now,

Percentages in Linked Data

Hello, I would like to publish some statistical data. A few of these numbers are percentages. What is the best way to make it clear to data consumers that the numbers are to be treated as percentages? As far as I can tell, the XSD data types do not suffice. Regards, Frans Knibbe

Re: Percentages in Linked Data

sets... John On Mon, Jun 24, 2013 at 12:37 PM, Frans Knibbe | Geodan frans.kni...@geodan.nl wrote: Hello, I would like to publish some statistical data. A few of these numbers are percentages. What is the best way to make it clear to data consumers that the numbers are to be treated

Re: Percentages in Linked Data

Frans, On 24/06/13 17:37, Frans Knibbe | Geodan wrote: Hello, I would like to publish some statistical data. A few of these numbers are percentages. What is the best way to make it clear to data consumers that the numbers are to be treated as percentages? As far as I can tell, the XSD data types do

How can I express containment/composition?

Hello, I would like to express a composition relationship. Something like: A Country consist of Provinces A Province consists of Municipalities I thought this should be straightforward because this is a common and logical kind of relationship, but I could not find a vocabulary which allows be

Re: How can I express containment/composition?

/documents/dcmi-terms/#terms-isPartOf Martynas graphity.org On Thu, Feb 21, 2013 at 2:47 PM, Frans Knibbe | Geodan frans.kni...@geodan.nl wrote: Hello, I would like to express a composition relationship. Something like: A Country consist of Provinces A Province consists of Municipalities I thought

Re: How can I express containment/composition?

.: in the USA, level 1 administrative subdivisions are States. In Italy, they are Regions. It is a minor change of perspective with respect to yours. Il giorno 21/feb/2013, alle ore 14:01, Frans Knibbe | Geodan frans.kni...@geodan.nl ha scritto: Thank you Martynas, that seems to be just what I

Re: How can I express containment/composition?

, alle ore 15:10, Frans Knibbe | Geodan frans.kni...@geodan.nl ha scritto: Barry and Matteo, thank you for pointing me to the GeoNames Ontology. Geographical containment can also be found in GeoSPARQL (http://schemas.opengis.net/geosparql/1.0/geosparql_vocab_all.rdf): sfContains. I had

Re: GeoSpatial vocabularies

just came across an OWL Application Profile of CSW OGC discussion paper from 2009 submitted by a) Allworlds Geothinking b) University of Nottingham c) EDINA, University of Edinburgh. This may help as a start. Best, Thomas [1] http://inspire.jrc.ec.europa.eu/ Am 08.08.2012 14:40, schrieb Frans Knibbe

Re: GeoSpatial vocabularies

Hello Thomas, Why do you think an RDF version of OGC Catalog Services is needed? Don't the regular ways of describing datasets suffice? One reason I can think of is that we desperately need some way of describing the spatial resolution (level of detail, level of generalization) for

What do you get when you dereference the URI of a named graph?

Hello, I have a (hopefully) simple question: What can you expect when you dereference the URI of a named graph? I would expect the answer to be all the triples that belong to that graph, but I could not find a source for such a mandate or consensus. Thanks in advance, Frans

Re: What do you get when you dereference the URI of a named graph?

On 2012-01-04 16:54, Yrjana Rankka wrote: On 1/4/12 17:42 , Yrjana Rankka wrote: On 1/4/12 17:00 , Kingsley Idehen wrote: Trouble is that there isn't consensus re. this matter. For instance, one could assume that the URI / IRI of a named graph resolves to a description of said graph. That

Re: Dataset URIs and metadata.

. +353 91 495730 http://linkeddata.deri.ie/ http://sw-app.org/about.html On 21 Jul 2011, at 15:19, Frans Knibbe wrote: Thanks for the replies. It seems that there is agreement that a dataset should have a URI and that dereferencing that URI should return metadata about the dataset. That is good

Re: Dataset URIs and metadata.

Enterprise Research Institute NUIG - National University of Ireland, Galway Ireland, Europe Tel. +353 91 495730 http://linkeddata.deri.ie/ http://sw-app.org/about.html On 22 Jul 2011, at 09:42, Frans Knibbe wrote: On 2011-07-21 16:27, Michael Hausenblas wrote: But is this really common practice

Dataset URIs and metadata.

Hello, I have just placed a Linked Data dataset online and now I am struggling with finding the best way to publish the metadata of the dataset. I wonder if there are best practices for referencing a dataset and its metadata, and for linking the two. I did find out that using the Vocabulary

Re: Dataset URIs and metadata.

? Regards, Frans On 2011-07-21 12:35, Frans Knibbe wrote: Hello, I have just placed a Linked Data dataset online and now I am struggling with finding the best way to publish the metadata of the dataset. I wonder if there are best practices for referencing a dataset and its metadata

Re: OGC seeks public comment on GeoSPARQL

It was a good idea to post this announcement here! At the moment it is not really possible to publish geographical data in the Linked Data cloud. Well, there is the Basic Geo vocabulary from the W3C, and it is widely used, but it does not allow coding geometries other than points, and it does

create HTML based on RDF?

Hello, I am continuing my efforts with publishing Linked Data. I am trying to that step by step. I have now managed to publish data in static RDF files. Also, I have managed to configure my web server to do 303 redirection, returning either a HTML file or the RDF file, depending on the

Minting URIs: how to deal with unknown data structures

some kind of structured choice of input values. I would welcome any advice on this topic from people who have had some more experience with publishing Linked Data. Regards, Frans Knibbe