Knowrob_common package functionality &use ?

asked 2012-12-04 02:53:26 -0600

Wafaay
111 ●7 ●9 ●15

updated 2014-04-20 14:09:31 -0600

ngrennan
1 ●1 ●1

hi... i was reading the Knowrob tutorials...and when i reached the section of Exporting knowledge into owl files at Loading Files And Ros Packages ..i had a problem... i already made an owl file through the protege....but it's classes aren't like that

                 <rdfs:subClassOf rdf:resource="&knowrob;Place"/>

it is like that

                 <rdfs:subClassOf rdf:resource="#Table"/>

it says that -at the tutorials - i can do "that" by using Knowrob_common through owl_export module...My first question is "that" refers to adding the knowrob meaning to my classes ??..to be more obvious is that is the operation of exporting knowledge to owl file is to gave the meaning to the classes at my owl file and it converting my file to have that "&knowrob"?? My Second Question is where can i find the illustration of knowrob_common..ty for helping ^_^

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@moritz ...can you help me ?

Wafaay ( 2012-12-08 23:59:40 -0600 )edit

Please don't tag me to trigger answers. I can give support in my free time, but when I don't answer, this normally means that I don't have sufficient free time. I do look at questions tagged with "knowrob" from time to time and try to provide support if I can.

moritz ( 2012-12-09 20:58:11 -0600 )edit

sorry for that sir..i promise it'd not happen again ^_^

Wafaay ( 2012-12-10 08:01:10 -0600 )edit

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answered 2012-12-09 21:10:08 -0600

moritz
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All OWL identifiers are global IRIs, e.g. of the form 'http://ias.cs.tum.edu/kb/knowrob.owl#Cup'. You can write them in different ways, e.g. using XML entities (which are defined in the document head and can shorten the identifiers to &knowrob;Cup). You can also use IRIs that are relative to the xmlns defined in the OWL document (i.e. the #Table in your example will be treated as relative IRI and complemented with a namespace like 'http://ias.cs.tum.edu/kb/knowrob.owl').

Apart from that: The predicates on the page you refer to export knowledge that has been added to KnowRob in terms of Prolog assertions into OWL files. You can of course also create OWL files using any other method. If you mean "documentation" with "illustration", that can be found in the ROS wiki (http://ros.org/wiki/knowrob_common, not much) and in the API documentation in the source code).

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