... Yes, it would be good. It's like the issues faced by SQL installations designed for data warehousing applications - the optimizer prefers to generate ...
... processors. ... to generate ... filtering ... (predicate ... if it's ... this will ... parallelism. ... layer and ... strategy for ... more overhead ... ...
... `oc` will never be null, so this test is pointless. ... `indi` will never be null, so this test is pointless. Perhaps you meant (in both cases) to check...
Hi Ivan, ... This rdf:ID is relative to the base URI of the ontology. If this is not set by an xml:base, it will be resolved to be the source URL of the ...
... Just as an addition to Andy's reply: Without any inferencing (when querying only the base model), the above query should /not/ return you the statement ......
Hi, I have 4 owl files and want to save them in a database as a union. Would this code work: ModelMaker maker = ModelFactory.createModelRDBMaker(conn); ...
... Well, this is going to depend what you mean by "as a union". ... That depends what you mean by "union". All the statements you read go into `om`s base...
... make ... job ... locking ... parallel ... retrieved ... the ... if ... retrievals ... to ... would ... in ... How about a more P2P style and use a DHT? But...
Hi! I've created an ontology and a graphical application to navigate into it. I've used a Property "has_Image" which range is an URI. Now I'd like to view the...
Well, what I mean by union is having one model of these 4 files, where they are one schema used by the other 3 data files. So, would that syntax (previous one)...
... Hi, it should more likely be something like: file:///D/Immagini%20Ontologia/Emp82.gif (I'm not sure about what becomes of the : but to be a correct URI it...
... Yes. But there are different ways of doing that. Some involve having actual union objects, and some don't. ... Syntax has nothing (hardly anything) to do...
... I'm doing exactly this in a distributed sensor network (I guess you are working with sensors?). We split queries at nodes in a sensor network, by looking...
M.J. van der Veen
forward@...
Oct 2, 2006 12:43 pm
25513
In my case, the schema will hardly change, but the data files will, in terms of adding/deleting individuals. So, performance wise, which one you think is a...
... It depends what you want to do /with the union/ - how often you query it, how you query it, when (or if) you have to update it, hwo much data you have,...
Hello, While reading this journal article "Towards Personalization and a Unique Uniform Resource Identifier for Semantic Web Users within an Academic...
I resolved using simply: new ImageIcon(path); where path is D:\Immagini Ontologia\emp82.gif Even I resolved in a different way, Thank you, Ignazio. ... Mutuo...
... It is a tradeoff between speed of update and speed of access. If you are going to query the merged database model a lot then I would advise using static...
... I can't read the figure which appears to correspond to that claim (the text is too small for my aged eyes). ... Jena relies on the underlying Java and SAX...
Dear All, I've been working on using the rules engines with OWL ontologies. At the moment, I use the FBReasoner along with an ontology reasoner like this: 1:...
Matt Williams
matthew.williams@...
Oct 2, 2006 2:13 pm
25520
... Pretty tough on my young eyes. I'd take that claim with a generous pinch of salt. The route a string takes to go from RDF/XML through Jena and out to the...
... support ... also ... Also, if the RDF is in a database and the encodings don't match, then chaos results (in a way Jena can't test for). There is Arabic in...
Thank you very much Chris & Dave, your explanations and advice really help. Jessie ... will, ... would ... same ... then ... optimization ... files, ... data ...
Hi everyone, I want to know if it is possible to add a concat builtin predicate in the BuiltinRegistry into Joseki without recomiling it. Thanks in advance ...
Hi. I tried to use SPARQL query to get some data from a memoryModel and it turned out to be extremely slow in comparison with getting the same data using jena...
... Do you mean add another function property to the query processor used in Joseki (i.e ARQ)? In which case the answer is "yes" (you don't need to recompile...
... Dan, It will all depend on what sort of distribution of data there is and whether the hardcoded Jena API calls exploit more of the structure (i.e. hit...
Hi, actually I think both would help. It was the second assumtion you've made. ... Jena). I know is a Jena class. Like Joseki uses Jena, I was thinking in add...
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