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RE: [URW3 public] OWL extensions [was Re: [URW3] ... three questions based on the last telecon]

From: Kathryn Blackmond Laskey <klaskey@gmu.edu>
Date: Mon, 30 Jul 2007 07:51:22 -0400
To: Giorgos Stoilos <gstoil@image.ece.ntua.gr>, 'Kathryn Blackmond Laskey' <klaskey@gmu.edu>
Cc: public-xg-urw3@w3.org
Message-id: <p061104e9c2d38025be51@[]>

I agree that inaccuracies in height measurements are typically not a 
serious concern.  My point was that even so, a person's height could 
be wrong because the person grew taller.


At 2:43 PM +0300 7/30/07, Giorgos Stoilos wrote:
>  > -----Original Message-----
>>  From: Kathryn Blackmond Laskey [mailto:klaskey@gmu.edu]
>>  Sent: Sunday, July 29, 2007 8:51 PM
>>  To: Giorgos Stoilos; Peter.Vojtas@mff.cuni.cz; 'Ken Laskey'
>>  Cc: 'Kathryn Blackmond Laskey'; public-xg-urw3@w3.org; 'Umberto Straccia'
>>  Subject: RE: [URW3 public] OWL extensions [was Re: [URW3] ... three
>>  questions based on the last telecon]
>>  >...in order for the system to
>>  >return the exact height of each person and then a local processing method
>>  to
>>  >fuzzify the heights...
>  > That is assuming the exact heights are available.  For many of the
>>  problems we are concerned about, there will be values in the
>>  database, but we cannot assume they are correct.
>I see that this is the case in other types of applications, like situation
>awareness and I fully concur. But I don't think there is much to trouble in
>the aforementioned case. There is insignificant difference if someone 178cm
>is inserted as 179cm or even 180cm in our use case.
>>  The database may contain accurate height measures for some of the
>>  people, and either null values (height is unknown) or imputed values
>>  (a guess or inference based on other available data for the person)
>>  for some of the people.  Maybe the information is out of date.  If a
>>  person is 19 years old, we cannnot assume that a 6-year-old height
>>  measurement is accurate.  On the other hand, if the person is 30
>>  years old, then the height 6 years ago is probably fine.
>I don't understand your point here. Are you suggesting that uncertainty
>could solve these issues?
>>  K
Received on Monday, 30 July 2007 11:51:29 UTC

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