And it is, in that it involves the contributions of users and allows people to put
a resource in multiple categories. But tagging can also complement traditional classification
systems, and we??™ll look at several examples of that in the following sections.
Controlled Vocabularies
Here??™s an easy question: what generic word do you use to describe a carbonated
beverage?
If you??™re from the northern United States or Canada, chances are that you??™ll say
???pop.??? If you??™re from the Southwest or Northeast U.S., you??™ll probably say ???soda.??? If
you??™re from the Southern U.S., particularly the Gulf States, the odds are that your
generic name for a soft drink is ???coke.???
Note
Alan McConchie asked this very question on his Web site http://popvssoda.com.
All of these words refer to the same concept; for any discussion related to beverages,
they are essentially synonyms. (Soda can also refer to chemicals containing sodium,
and sodium bicarbonate is sometimes used to make soda water.
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