Submissions:Classification scheme - adjacency list model - to Taxonomy

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Revision as of 17:35, 3 March 2010


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Current revision ID: 8747

Name Classification scheme - adjacency list model - to Taxonomy
Problem Re-engineering a classification scheme which follows the adjacency list model to design a taxonomy.

APPLICABILITY

The semantics of the relation between parent and children items are subClassOf.

There is no multi-inheritance nor cyclic relations.


Non-Ontological Resource

Description A non-ontological resource holds a classification scheme which follows the adjacency list model.

A classification scheme is a rooted tree of concepts, in which each concept groups entities by some particular degree of similarity. The semantics of the hierarchical relation between parents and children concepts may vary depending of the context. The adjacency list data model for hierarchical classifications proposes to create an entity which holds a list of items with a linking column associated to their parent items.

Graphical Representation

Diagram

Image:AdjacencyList.png


Ontology

Description The ontology generated will be based on the taxonomy architectural pattern (AP-TX-01). Each category in the classification scheme is mapped to a class, and the semantics of the relationship between children and parent categories are mapped to subClassOf relations.
Graphical Representation

Diagram

Image:Ontology.png


Process

Description 1. Identify the classification scheme items which do not have a parent key value, i.e. classification scheme items without parents.

2. For each one of the above identified classification scheme items cei:

2.1. Create the corresponding ontology class, Ci class.

2.2. Identify the classification scheme items, cej , which are children of cei, by using the parent key values.

2.3. For each one of the above identified classification scheme items cej :

2.3.1. Create the corresponding ontology class, Cj class.

2.3.2. Set up the subClassOf relation between Cj and Ci.

2.3.3. Repeat from step 2.2 for cej as a new cei.

3. If there are more than one classification scheme items without parent cei

3.1. Create an ad-hoc class as the root class of the ontology.

3.2. Set up the subClassOf relation between Ci class and the root class.

Graphical Representation

Diagram

Image:Wfcsalsocheck.png


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