[
Lists Home |
Date Index |
Thread Index
]
For the relationship between XML, RDF, and OWL, I recommend you review
some of the OWL recommendations[1]. For example, the "OWL Web Ontology Language
Overview[2]" provides a pretty nice description of the
relationships.
Regarding your access control example: I am certain that this can be
handled by XACML (as you describe the problem in a high-level sense). The
buildings and rooms would be considered XACML resources, and XACML policies with
rules such as "Person X may gain access to building Y only on date Z" that are
evaluated based on a decision request.
Regarding XACML and semantic technologies such as OWL: Enhancing XACML
with semantic technologies would be a great thing IMO, as it would
enable (among other things) XACML rules to be expressed more richly. I am
not aware of any current efforts for this within the OASIS XACML TC, but you may
wish to send a comment to that TC inquiring about this - see
[3].
Joe
Joseph Chiusano
Associate
Booz Allen Hamilton
700 13th St. NW
Suite 1100
Washington, DC 20005
O: 202-508-6514
C: 202-251-0731
Does anyone have thoughts about the following?
This example
below XACML, but it *is* just an example.
I am interested in the
relationship between xml -> rdf -> owl
I think this can be divided
into two concerns from my point of view but I will just mention the first,
that of the position of OWL in the market.
This concerns the status of owl
amidst all the competing xmls.
An example would be the following:-
ucml
have created a framework demo by Harry Chin called COBRA which is a context
aware ontology broker. It allows a mobile client to hold an owl ontology that
includes a permissions profile and a server broker to reason that the
permisions allow certain types of data to be shared. For instance, suppose I
request permision to enter a room in a certain building, I just request by
room. The broker does two things. It reasons that the room resides in a
particular building and, looking at my profile, it finds I do not have
permision for the room, but I do for the building (which at least will get me
to the front desk!)
So that is what it return to me. Introducing time makes
this more interesting, since I may gain permision to that room only on a
certain date, this is returned.
But I have a colleague who, intreaguingly,
has told me that he worked on the first implementation of an XACML server. I
don't know enough to doubt this, that is whether XACML would cover the same
ground, but he tells me this is what XACML does.
There must be many other
examples. Thoughts anyone?
Adam
|
