[Sigcr-l] information organization and indexing languages

[M.Roszkowski]

apologies for cross posting

Hello

I’ve been preparing for some time a survey about information organization in subject gateways (e.g. Intute, BUBL, MathGuide). I have examined impact of indexing languages (classification , thesaurus, subject headings) on information organization. I have extracted three models of information organization:
- flat (alphabetical subject listing),
- hierarchical (subject trees),
- hybrid (e.g. shallow subject trees with some faceted structure, ontologies)
 
Now I am strongly interested in hierarchical model. I’ve made some quantity analysis, where I’ve tested variables:
- depth of the structure,
- total number of classes,
- average number of classes on each level /distribution of classes/,
- class capacity – average number of posting,
- distribution of postings on each level.
Of course I have made some quality analysis, e.g.
- literary warrant as a rule for class identification /e.g. problem of empty classes/,
- types of indexing languages as a basis for building the hierarchical structure,
- types of relation between classes,
- category affiliation of top level classes.  
Considering my assumptions, do You see any variables which would be interesting to test ?
I am facing the problem of using indexing languages as a tool for information organization.
If You have done this research testing any kinds of collection, please share your conlusions.  
With regards
Marcin
       
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