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Teleconference.2007.12.19/Minutes
OWL Working Group Meeting Minutes, 19 December 2007
DRAFT. Currently Under Review
Contents
See also: IRC log
- Present
- Bijan Parsia, Rinke Hoekstra, Boris Motik, Ian Horrocks, Alan Ruttenberg, Ivan Herman, Peter Patel-Schneider, Elisa Kendall, Sandro Hawke, Evan Wallace, Zhe Wu, Evren Sirin, Bernardo Cuenca Grau, Jeremy Carroll, Markus Krötzsch, Carsten Lutz, Jeff Pan
- Regrets
- James Hendler, Martin Dzbor, Michael Smith, Vipul Kashyap, Achille Fokoue, Uli Sattler
- Chair
- Ian Horrocks, Alan Ruttenberg
- Scribe
- Evren Sirin
Admin
PROPOSED: Accept Previous Minutes
RESOLVED: Accept Previous Minutes
Pending Action Items
Alan Ruttenberg: Action 4, are we using redirects?
Sandro Hawke: we can cancel the action
Ian Horrocks: there are still people without wiki accounts
Alan Ruttenberg: update the deadline for Action 23
Alan Ruttenberg: mid-january for Action 23
Alan Ruttenberg: do we want punning on object and datatype properties?
Bijan Parsia: does it matter?
Alan Ruttenberg: describe the problem in detail
Alan Ruttenberg: update the deadline for Action 48
Ian Horrocks: zhe will write OWLPrime spec in a similar format to others
Zhe Wu: trying to figure out if RDFS 3.0 vocabulary can be mapped to DL-Lite or EL++
Zhe Wu: summary could be in wiki in January
Zhe Wu: update deadline for Action 54
Alan Ruttenberg: continue Uli's actions Action 55 and Action 56
Ian Horrocks: there were pending review items
Ian Horrocks: pending means people want confirmation that it is finished
Alan Ruttenberg: accept Action 36, Action 40, Action 41 as closed
Alan Ruttenberg: can you put the revision of wiki page regarding Action 57
Alan Ruttenberg: there should be a note in the tracker about the action
Alan Ruttenberg: goal is for someone to understand what the action is and how it was resolved
Alan Ruttenberg: people can review easily
Alan Ruttenberg: pending review actions completed
Local Arrangements for Second F2F
Peter Patel-Schneider: put a link to wiki [1]
Peter Patel-Schneider: location is Gaithersburg, MD
Alan Ruttenberg: personally encourage people to attend OWLED
Discussion
RDF Mapping Task Force
Alan Ruttenberg: establish RDF mapping task force
Alan Ruttenberg: task force will create a wiki page
Alan Ruttenberg: address open issues regarding RDF mapping
Alan Ruttenberg: ensure backward compatibility
Imports discussion
Alan Ruttenberg: let's discuss imports
Boris Motik: imports are by ontology URI but physical URI may be different
Boris Motik: propose to have oracles to map ontology URIs to physical URIs
Boris Motik: a file based oracle plus hints in the imports
Boris Motik: if all else fails try ontology URI
Bijan Parsia: XML catalog has similar mechanism
Bijan Parsia: Protege and TBC has similar mechanisms
Jeremy Carroll: do we need to specify the mechanism for interoperability?
Sandro Hawke: we should first try ontology URI then manual override
Boris Motik: in practice, you don't retrieve ontologies from the web
Boris Motik: most of the time they are local
Boris Motik: trying web first is fine but it is important to say there is another mechanism
Alan Ruttenberg: chair hat off, a use case for imports regarding versioning
Alan Ruttenberg: multiple versions of the same ontology
Alan Ruttenberg: ontology is same but location for different versions change
Alan Ruttenberg: a differetn use case then caching
Alan Ruttenberg: local file does not work well with Web
Alan Ruttenberg: have the mapping in a Web file
Boris Motik: if we want to solve versioning problem we need to look at it independent of imports
Peter Patel-Schneider: solution to versioning is same as W3C versioning
Peter Patel-Schneider: as I proposed in the F2F
Bijan Parsia: I work with command line tools and local files
Bijan Parsia: putting a mapping on the Web does not work for those cases
Alan Ruttenberg: I'm reluctant on imports solution without considering versioning
Alan Ruttenberg: putting a map might not work always but there should be a possiblity to do so
Alan Ruttenberg: even if the contents might change ontology identity name remains same
Ian Horrocks: since alanr is discussing I'll chair this discussion
Jeremy Carroll: bijan, why does your use case require the spec to address it?
Boris Motik: spec should be precise with regards to how imports work
Boris Motik: otherwise developers come up with different solutions
Bijan Parsia: I agree with boris, this is a spec issue
Alan Ruttenberg: we are not that far away from a solution
Alan Ruttenberg: get interested people discuss the issue
Alan Ruttenberg: after we have consensus that this is a spec issue
Alan Ruttenberg: maybe do a straw poll
Ian Horrocks: majority thinks this is a spec issue
Jeremy Carroll: it might do harm to put in spec
Jeremy Carroll: better handled in tools
Ian Horrocks: people involved will dicuss importing issue via email
Ian Horrocks: action item for alanr, 3 weeks from now, to arrange imports discussion
Ian Horrocks: passing the chair hat back to alanr
ACTION: Alan to organize task force on imports -- due 3 weeks
Issues
Alan Ruttenberg: Let's go through the raised issues and decide if we want to accept or reject the issue
Alan Ruttenberg: Issue 9 by pfps
Alan Ruttenberg: bernardo. dow we want to accept this issue?
Bernardo Cuenca Grau: I'm not sure if this is RDFS semantics or OWL-Full semantics
Bernardo Cuenca Grau: DL-Lite is a proper superset
Bernardo Cuenca Grau: worth responding to
Alan Ruttenberg: Accept Issue 9
Evren Sirin: This is the exact same problem raised in Issue 22
Alan Ruttenberg: reject Issue 10 as duplicate of Issue 22
Alan Ruttenberg: I've come up with similar use casse
Alan Ruttenberg: at least two other people find it useful
Alan Ruttenberg: so we can put it in the functional syntax
Ian Horrocks: by accepting an issue we are just saying it is not crazy to discuss it
Alan Ruttenberg: accept Issue 22
Alan Ruttenberg: moving to Issue 23
Alan Ruttenberg: Issue 3 could be slightly different
Alan Ruttenberg: is there anybody seconding to accept?
Alan Ruttenberg: reject Issue 23 on the basis there is noone seconding
Alan Ruttenberg: moving to Issue 24
Alan Ruttenberg: combining onotlogies that are incompatible with each other cause inconsitency
Alan Ruttenberg: owl:backwardcompatibleWith property
Evan Wallace: seconding to accept Issue 24
Alan Ruttenberg: Issue 24 accepted
Alan Ruttenberg: accept Issue 47 based on easy keys proposal
Alan Ruttenberg: second bijan to accept Issue 47
Alan Ruttenberg: accepted Issue 47
Alan Ruttenberg: moving to Issue 56
Alan Ruttenberg: Issue 56 accepted
Alan Ruttenberg: Issue 60 regarding wine ontology
Ivan Herman: we should accept
Jeremy Carroll: I second it
Alan Ruttenberg: Issue 60 accepted
AOB
Alan Ruttenberg: let's adjourn if there is no other important issue
Alan Ruttenberg: next meeting in two weeks