This presentation was hold in the open space session of TMRA 2007. It contributed to the discussion of scoping subject identifiers.

1. Why not scoping Subject Identifiers?
Open Space Session @ TMRA 2007, Leipzig, 11.10.2007
Lutz Maicher, University of Leipzig
Xuân Baldauf, University of Auckland
maicher@informatik.uni-leipzig.de
xuan—tmra2007@baldauf.org
Automatische
Sprachverarbeitung
Institut für Informatik

2. Automatische
Why not scoping Subject Identifiers?
Sprachverarbeitung
Subject Identity is perspective dependent
Subject Identity
From the child's perspective: („Elgs are sweet.“)
I caught always the same Subject, an elg.
From the zoologist's perspective: („Elgs are loners.“)
I caught two deers and three elgs.
From the ranger's perspective: („Bernd needs a cow“)
I caught Lisa, Ud (fighting), and Bernd (in summer, in winter and as calf).
Decision about Subject Identity is a perspective dependent process under uncertainty
whether Subject Stages caught at different occassions belong to the same Subject.
Lutz Maicher 2
Institut für Informatik

3. Automatische
Why not scoping Subject Identifiers?
Sprachverarbeitung
Childs perspective
[subject identifiers]={ [subject identifiers]={ [subject identifiers]={ [subject identifiers]={
ns1:elg ns1:elg ns1:elg ns1:elg
} } } }
merging
(according TMDM)
[subject identifiers]= {ns1:elg}
Lutz Maicher 3
Institut für Informatik

4. Automatische
Why not scoping Subject Identifiers?
Sprachverarbeitung
Rangers perspective
[subject identifiers]={ [subject identifiers]= { [subject identifiers]={ [subject identifiers]={
ns2:lisa ns2:bernd ns2:bernd ns2:bernd
} } } }
merging
(according TMDM)
[subject identifiers]={
ns2:ud
}
[subject identifiers] = {ns2:bernd}
Lutz Maicher 4
Institut für Informatik

5. Automatische
Why not scoping Subject Identifiers?
Sprachverarbeitung
Scoping Subject Identifiers
[subject identifiers]={ [subject identifiers]={ [subject identifiers]={ [subject identifiers]={
ns2:lisa / ranger, ns2:bernd / ranger, ns2:bernd / ranger, ns2:bernd / ranger,
ns1:elg / child ns1:elg / child ns1:elg / child ns1:elg / child
} } }
}
[subject identifiers]={ And now merging depends on the
ns2:ud / ranger, context (perspective)
ns1:elg / child which is switched on!
}
… and we wonder why there are no scopes for Subject Identifiers!
Lutz Maicher 5
Institut für Informatik