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Versioning vs Temporal modeling of Patient State

From: Kashyap, Vipul <VKASHYAP1@PARTNERS.ORG>
Date: Thu, 11 Jan 2007 16:28:53 -0500
Message-ID: <2BF18EC866AF0448816CDB62ADF6538105EAF095@PHSXMB11.partners.org>
To: "Nigam Haresh Shah" <nigam@stanford.edu>
Cc: "Trish Whetzel" <whetzel@pcbi.upenn.edu>, "kc28" <kei.cheung@yale.edu>, "Alan Ruttenberg" <alanruttenberg@gmail.com>, "w3c semweb hcls" <public-semweb-lifesci@w3.org>


Nigam,

This is an interesting example...

> Have an example for this one: If the instance is of a the class "Tumor"
> then
> on giving treatment it changes in size, shape etc, and might ultimately
> disappear. On each visit we are observing a different version of the tumor
> instance [in Tom].

[VK] Clearly there is a longitudinal aspect to this as the state of the tumor
changes over time....

This could be modeled in two ways:

Tumor1.state = X at time T1
Tumor1.state = Y at time T2
...
Tumor1.state = "Non-existent" at time Tn

Essentially you are modeling state as a multivalued property or as a ternary
relationship (Tumor, state, Time)

Alternatively,

Tumor1, v1.state = X
Tumor1, v2.state = Y
...
Tumor1, vN.state = "Non-existent"


IMHO, the former representation conveys more information and meaning...
So, it may make sense not to confound versioning with temporal progression...

Look forward to the commounities thoughts on the issue.

Cheers,

---Vipul






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Received on Thursday, 11 January 2007 21:34:11 UTC

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