Call for Papers IEEE Internet Computing - Special Issue on Smart Cities (deadline: 1st March 2013)

2012-12-19 Thread Irene Celino
(with apologies for cross-posting) --- IEEE Internet Computing Special Issue on Smart Cities http://www.computer.org/portal/web/computingnow/iccfp6 --- Smart cities are currently the investigation focus of a broad research

CfP: participate in the LAK Data Challenge

2012-12-19 Thread Stefan Dietze
[Apologies for cross-posting] The LAK Dataset (see http://www.solaresearch.org/resources/lak-dataset/) provides access to structured metadata and full-text from research publications in the field of learning analytics. Beyond merely publishing the data, we are actively encouraging its

Re: Querying different SPARQL endpoints

2012-12-19 Thread Martynas Jusevičius
Hey Vishal, knowledge of structure can be useful but is not necessary. Probably the most common pitfall is not to check if named graphs were used. Your can try this query that handles both cases (default and named graphs): PREFIX rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# PREFIX rdfs:

Re: Querying different SPARQL endpoints

2012-12-19 Thread Hugh Glaser
You can start querying for stuff, but I am guessing that what you mean is how can you find out what is in the store without starting to query. Well if you are lucky: There is a sitemap.xml, which points you at a voiD document that tells you some of what you want to know, such as what the topics

Re: Querying different SPARQL endpoints

2012-12-19 Thread Oscar Corcho
Hi all, As one of the persons in charge of the dataset that Vishal has pointed out to, and responding to Hugh's comment, you will actually find a description of this specific dataset at: http://datahub.io/dataset/culturalinkeddata In fact, according to our own methodological guidelines for

Re: Querying different SPARQL endpoints

2012-12-19 Thread Kingsley Idehen
On 12/19/12 1:28 PM, Vishal Sinha wrote: There are many public SPARQL endpoints available. For example the cultural linked data: http://cultura.linkeddata.es/sparql How can I know what type of information is available in this dataset. Based on what assumption I can query it? Do I need to know

Re: Querying different SPARQL endpoints

2012-12-19 Thread Hugh Glaser
Respect! On 19 Dec 2012, at 19:42, Oscar Corcho ocor...@fi.upm.es wrote: Hi all, As one of the persons in charge of the dataset that Vishal has pointed out to, and responding to Hugh's comment, you will actually find a description of this specific dataset at:

Re: Querying different SPARQL endpoints

2012-12-19 Thread Boris Villazon-Terrazas
Hi all On 19/12/2012 20:42, Oscar Corcho wrote: Hi all, As one of the persons in charge of the dataset that Vishal has pointed out to, and responding to Hugh's comment, you will actually find a description of this specific dataset at: http://datahub.io/dataset/culturalinkeddata In fact,

Re: Querying different SPARQL endpoints

2012-12-19 Thread Giovanni Tummarello
Generally speaking its yet another big gaping unsolved problem. Our stab at it one is to do big data Hadoop based summarization and then use the summary to understand how to query it. E.g. this unpublished link below exposes the Sindice.com data graph summary containing a summary of 20-30