Dear Robert,
In the discussion about co-reference statements and deductions from
shortcuts we have understood that reification via Attribute Assignment
is a wrong method to extend properties, because it confuses agency of
belief when the maintainer of the database describes himself as making
an attribute assigment, and in other cases not.
Therefore, I propose the PC construct.
Secondly, I absolutely do agree and do not propose a quantification of
belief. There are non-quantitative forms of logic dealing with belief
values other than true-false, such as "possible". We can think of other
measures of supporting evidence.
WRT to interoperability there is no problem as long as a
recall-precision hierarchy is preserved. As long as "true" implies
"possible", we get what we need (i.e., querying for possible returns
also true, only querying for possible and not true would return only
possible).
Best,
Martin
On 10/3/2017 7:15 PM, Robert Sanderson wrote:
We have dealt with this situation by using AttributeAssignment, as in RDF the
.1 (and .2) properties would require reification anyway.
It can also cover “workshop of” or “style of” style attributions which are
often uncertainty about the individual.
We resisted trying to quantify uncertainty, as from an interoperability
viewpoint, there’s very little to be gained from saying that one person is 5/10
sure of an assertion whereas someone else is 4/10 certain… the temptation is to
use the strength of belief as an indicator of likelihood of truth, rather than
the state of mind of the asserting agent. The first would be useful but
impossible, we consider the second not to be useful for interoperability
between public systems.
(Which is not to say it’s not valuable, just not in our scope of work)
Rob
On 10/3/17, 6:04 AM, "Crm-sig on behalf of martin" <crm-sig-boun...@ics.forth.gr
on behalf of mar...@ics.forth.gr> wrote:
Dear All,
Following a request from Dominic how to deal with uncertain associations,
such as "probably author of" I'd like to discuss a solution expanding properties
with the "Property Class" PC and adding a "certainty value" as a ".2"
property for all those cases in which the belief is the one of the maintainers of the knowledge base,
in contrast to an explicit inference by a particular actor.
Best,
martin
--
--------------------------------------------------------------
Dr. Martin Doerr | Vox:+30(2810)391625 |
Research Director | Fax:+30(2810)391638 |
| Email: mar...@ics.forth.gr |
|
Center for Cultural Informatics |
Information Systems Laboratory |
Institute of Computer Science |
Foundation for Research and Technology - Hellas (FORTH) |
|
N.Plastira 100, Vassilika Vouton, |
GR70013 Heraklion,Crete,Greece |
|
Web-site: http://www.ics.forth.gr/isl |
--------------------------------------------------------------
--
--------------------------------------------------------------
Dr. Martin Doerr | Vox:+30(2810)391625 |
Research Director | Fax:+30(2810)391638 |
| Email: mar...@ics.forth.gr |
|
Center for Cultural Informatics |
Information Systems Laboratory |
Institute of Computer Science |
Foundation for Research and Technology - Hellas (FORTH) |
|
N.Plastira 100, Vassilika Vouton, |
GR70013 Heraklion,Crete,Greece |
|
Web-site: http://www.ics.forth.gr/isl |
--------------------------------------------------------------
