[Crm-sig] Issue 407: Ordinal Property for E55 Type

Martin Doerr martin at ics.forth.gr
Tue Jun 11 14:46:45 EEST 2019


I agree.

Detail: from a maths point of view, partial ordering may be allowed for: 
I.e.: not all value pairs can  be compared with respect to the order 
relation. This happens in spaces with more than one dimension, but does 
not affect transitivity. Any math freak here to confirm?;-)

Martin

On 6/11/2019 12:43 PM, Robert Sanderson wrote:
>
> Homework assigned to me to add a notion of concept schemes / context 
> to the scope note.  Agreement at Paris SIG that this could go into 
> CRMsci and thus “Oxx is conceptually greater than”
>
> Proposed modification to the scope note:
>
> This property allows an instance of E55 Type from a particular concept 
> scheme or vocabulary to be declared as having an order relative to 
> other instances of E55 Type in the same or other concept schemes, 
> without necessarily having a specific value associated with either 
> instance.  This allows, for example, for an E55 Type instance 
> representing the concept of "good" in a conservation report vocabulary 
> to be greater than the E55 Type instance representing the concept of 
> "average" in the same vocabulary. This property is transitive, and 
> thus if "average" is greater than "poor", then "good" is also greater 
> than "poor". In the domain of statistics, types that participate in 
> this kind of relationship are called "Ordinal Variables"; as opposed 
> to those without order which are called "Nominal Variables". This 
> property allows for queries that select based on the relative position 
> of participating E55 Types.
>
> Let me know if that does not fulfil the HW assignment ☺
>
> Rob
>
> *From: *Crm-sig <crm-sig-bounces at ics.forth.gr> on behalf of Stephen 
> Stead <steads at paveprime.com>
> *Organization: *Paveprime Ltd
> *Reply-To: *"steads at paveprime.com" <steads at paveprime.com>
> *Date: *Thursday, January 3, 2019 at 6:49 AM
> *To: *'crm-sig' <Crm-sig at ics.forth.gr>
> *Subject: *[Crm-sig] **NEW ISSUE** Ordinal Property for E55 Type
>
> During the discussions at the CRM-SIG meeting during November 2018 in 
> Berlin the problem of dealing with instances E55 Type that have 
> ordinal relationships with other instances of E55 Type came up. There 
> were a number of use cases explored including:-
>
>   * Condition report status values like Excellent, Good, Average,
>     Poor, Critical where being able to query for all items that were
>     below “Average” or “Good” and above would be useful.
>   * Map scales expressed as types
>   * Fire Hazard Ratings
>
> This lead Robert and I to suggest that a new property be created that 
> allowed this kind of ordinal relationship to be expressed. The 
> quantification allows for parallel hierarchies, e.g. if someone has a 
> type that is “slightly better than average but not quite good”, then 
> they could align that with an existing hierarchy of Good > Average by 
> saying that it is greater than “Average” and that “Good” is greater 
> than both it and Average.
>
>
>       Pxx is conceptually greater than (is conceptually less than)
>
> Domain: E55 Type
>
> Range: E55 Type
>
> Quantification: many to many (0,n:0,n)
>
> This property allows instances of E55 Type to be declared as having an 
> order relative to other instances of E55 Type, without necessarily 
> having a specific value associated with either instance.  This allows, 
> for example, for an E55 Type instance representing the concept of 
> "good" to be greater than the E55 Type instance representing the 
> concept of "average". This property is transitive, and thus if 
> "average" is greater than "poor", then "good" is also greater than 
> "poor". In the domain of statistics, types that participate in this 
> kind of relationship are called "Ordinal Variables"; as opposed to 
> those without order which are called "Nominal Variables". This 
> property allows for queries that select based on the relative position 
> of participating E55 Types.
>
> Examples:
>
>   * Good (E55)/is conceptually greater than/ Average (E55)
>
>   * Map Scale 1:10000 (E55) /is conceptually greater than/ Map Scale 
> 1:20000 (E55)
>
>   * Fire Hazard Rating 4 (E55)/is conceptually greater than/ Fire 
> Hazard Rating 3 (E55)
>
> Comments Welcome
>
> SdS & Robert S
>
>
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-- 
------------------------------------
  Dr. Martin Doerr
               
  Honorary Head of the
  Center for Cultural Informatics
  
  Information Systems Laboratory
  Institute of Computer Science
  Foundation for Research and Technology - Hellas (FORTH)
                   
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  Email: martin at ics.forth.gr
  Web-site: http://www.ics.forth.gr/isl

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