Hello every body,
Sorry for my intrusion. I?m working with demographic models, so this
discussion about the concept age is interesting for me.
I think that the only demographic valid concept of age is the difference
between the actual date and the birth date. We can include a very close
concept aproximate age, when the birth date is not very clear, as Dr USM
Bish comment in his mail. All this can be reduced to include the birth date
in the model, with an additional field confidence. This new field is
between 0 and 1. And only have value 1 when the birth date is sure. You
don?t have to include the age concept if you have birth date concept...
of course is better use birth date because this parameter doesn?t change but
age change every second Unfortunately!
All the other concepts are not demographic but clinical and must be
registered (I think) in international codes and included as this in our
archetypes.
Sorry again if this is a nonsense.
Isabel Rom?n
- Original Message -
From: Philippe AMELINE philippe.amel...@nautilus-info.com
To: Gerard Freriks gfrer at luna.nl
Cc: OpenEHR Technical openehr-technical at openehr.org
Sent: Friday, January 28, 2005 12:37 AM
Subject: Re: Age
Hi Gerard,
We have found that we could represent anything cyclic with two concepts
: regular cycle and unregular cycle
For regular cycle, you have just to specify the cycle length (say P) and
the event duration (say D) ; time between events is P-D.
Natural langage expression is of the kind ten minutes every two hours
For unregular cycle, you need to specify a third parameter : the number
of events inside a cycle (say N).
Natural langage expression could be : one hour three times a day
That way, you just need 5 semantic concepts to express any cyclic
pattern of an event :
regular cycle
unregular cycle
cycle length
event duration
number of events inside a cycle
Of course, you can add some concepts such as starting time, ending time
and overall duration.
Well, it seems very simple ; however, we started a project with a lot of
pre-elaborated sentences samples provided by MDs, and we discovered that
natural langage is very un-accurate because the same sentence can be
understood very differently if you think of it as a regular cycle or an
unregular one.
So we fumbled nearly one month before I was able to discover that the
underlying model was so simple.
Cheers,
Philippe
Gerard Freriks wrote:
Dear Philippe,
Thank you for your reaction.
I'm interested in your model for cyclic events.
Gerard
-- private --
Gerard Freriks, arts
Huigsloterdijk 378
2158 LR Buitenkaag
The Netherlands
+31 252 544896
+31 654 792800
On 27 Jan 2005, at 20:15, Philippe AMELINE wrote:
Hi,
In Odyssee, we have made the choice of :
1) defining the concept Age as an ellapsed time value
2) defining age related concepts (like child, old person...) as
fuzzy sets
I think that it is the only way you can manage this kind of thinks.
We also have a (quite) good model for cyclic events ; I can describe it
further if you want.
Cheers,
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