[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] What are units-of-measure? e.g., what's a "kilometer"?
Hi Folks, Consider this statement: "The length of the Yangtze River is 6300 kilometers." What is a "kilometer"? 1. Is kilometer a class? Is 6300 an instance of the kilometer class? kilometer class: {..., 6300, ...} 2. Is kilometer a function? e.g., kilometer(Yangtze) --> 6300 In general: kilometer(physical object) --> number "The kilometer function maps a physical object to a number." 3. Is kilometer a property? e.g., a property of the Yangtze River is kilometer (this doesn't quite sound right; perhaps there's another way of expressing this that is more natural?) 4. Is kilometer a label? If so, then what's a label? Or is it something else? /Roger
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