Narrow Folksonomy
The main point of narrow folksonomies is, that author create an object and make this object accessible to other users. At the same time author indexing a content by one keyword, which is the most suitable for his object. According to representation of one tag for concrete content we are able here to determine the „power“ of tag. For example, web page facebook.com will assign to tag „social network“ 200 people, „friend searcher“ 50 people and „comunicator“ assign 20 people, than in this case will be „social network“ the most strong tag, in tag clouds.
Broad Folksonomy
The main idea here is, author create an object and make this object accessible to other users. Others taging this object by own keywords and they are using the keywords to search this object at the same time. In comparison with narrow folksonomy, here not so many people assign the same tag to object, so it´s very complicated to determine the „strong“ tags.
Tag, Tag clouds
TAG- term which determine the category, that users assigning to the concrete sources. The main idea of tag clouds, is connect folksonomies for more users in concrete community. Representation of tags- the most occurrence tags are accentuated and the most popular tag cloud is del.ico.us.
Very good and practical visual explanation you can find here.
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