[TYPO3-ect] taxonomies / categories in TYPO3

[Jochen Rau]

Hi,

I have taken a quick look at Mads extension. An it looks great!

In my opinion there are several scenarios tx_categories and tx_contagged 
(see http://wiki.typo3.org/index.php/Contagged ) may work together.

I. Tagging and linking category titles appearing in the content
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The most obvious thing is parsing the content by tx_contagged. So if a 
title of a category appears in the content it will be linked to a (by 
now its flat; see III.) list of categories with the description of the 
category below.

To enable this feature, the fields of the table "tx_categories" must be 
mapped to the fields of "tx_contagged". I have done this already and it 
will be available in the TER within the next days (v0.0.15 of 
tx_contagged). But fortunately another project has taken precedence 
(Antonia, 2007-10-08, 2320g, 48cm ;-) ).

By now tx_contagged works "one-way":
DATABASE->PARSER->FE
But it can also be
DATABASE->PARSER->DATABASE
by adding a persistance layer.


II. Auto-categorization of pages and/or Content Elements
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By means of tx_contagged it is possible to auto-assign a category to a 
word or a term. So there are four different layers to be categorized:
(Site->)Page->Content Element->Term

Lets assume you have a Content Element TEXT: "The quick brown fox jumps 
over the lazy collie."

And lets assume you have some Categories:
->Animal
   ->Cat
   ->Dog
   ->Other (Animal)
->Colour
   ->Red
   ->Green
   ->Blue
   ->Brown

It should be possible to inherit the categories of the child layer to 
the parent layer. This could be done by a simple (or more complex) 
algorithm. An example: A page is auto-assigned to the category "Animal" 
if all the Content Elements on the page are assingned to a sub-category 
of "Animal". And the Content Element is auto-assigned to the 
sub-category "Dog" if there is at least one Term that is (manually) 
assigned to the category "Dog", and that is "collie". But how to assign 
a category to a term? At this point EXT:contagged can be a glue between 
categories and tagging:

The term can be defined via tx_contagged and assigned to a category. 
Every time a term is found on a page the current cObj is assigned to its 
categories.

If the content Elements should not be auto-assigned, it can be useful to 
guess the best categories to be selected by the BE_USER.


III. Enriched Glossary and enriched links
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As the glossary terms defined by tx_contagged can be assigned to a 
category, it's possible to list dependencies to other glossary terms 
(with the same parent category or related category). This can also be 
done within a tool-tip carring links to other pages.

tx_categories can also be used to get a hierarchical list of terms 
defined by tx_contagged.

Overall it should be possible to generate a new kind of navigation like 
"semantic menue".


That's for now. More ideas to come ;-)

Greetings
Jochen