Hi Base,
In Dave Nolen's tutorial:
https://github.com/swannodette/logic-tutorial there is a section on
genealogy in which he composes child and child to create grandchild.
Seems similar, maybe helpful ?
Edmund
On 24/01/2012 01:35, Base wrote:
> Hi -
>
> I am attempting to model some hierarchical data for use in my
> first logic program and am having some problems understanding how
> to create a “typeof?” relationship with my data.
>
> Defining parent child is easy enough of course; however I would
> like to design a generic way of defining a subclass or superclass
> such that, given some set of hierarchical data, for example:
>
> Domain - Eukarya Kingdom - Animalia/Metazoa Phylum - Chordata Class
> - Mammalia Order - Primate Family - Hominidae Genus - Homo Species
> - Homo sapiens
>
> (typeof? “Mammalia” “Eukarya”) and (typeof? “Primate” “Eukarya”)
> and (typeof? “Hominidae” Eukarya”)
>
> all are true using the same mechanism without having to explicitly
> define the order one by one like:
>
> (defrel typeof? p c) (fact typeof? “Homo” “Homo sapiens”) (fact
> typeof? “Hominidae” “Homo sapiens”) (fact typeof? “Primate” “Homo
> sapiens”) (fact typeof? “Mammalia” “Homo sapiens”) ...
>
> Any help getting started on this would be most appreciated!
>
Thanks!
>
> Base
>
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