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Subject: Re: [topicmaps-comment] Mapping Topics to Cyc: How To Handle Scope?
OK, so let us apply this to Murray's earlier test case adn see what we have. He proposed "... a topic "Jimmy Carter" with a base name "President" (since he could be called that after he was elected) whose scope is scope of titles scope of English scope of time "after 1977" " With "any", we get his title if any of these three scopes is in effect: titles, English, (OR) "after 1977". Agreed? If we are interested in titles, we can find this base name even if we have not specified "after 1977", as long as we have specified "titles". That is my understanding of "any". That is fine for applying a scope with a single component, but what if we impose a compound scope consisting of both "titles" and "after 1977"? I was not thinking of this case earlier. Murray probably was ahead of me and thinking of this case. Should the baseName string "Jummy Carter" be considered valid? This reminds me of comparisons of node sets in XPath predicates, for which there are definite rules. For equality, for example, each node in the node set to the left of the equals sign is tested against each node in the node set to the right of the equals sign, and if any one node of the one set matches any one node of the other, the two compare equal (as best I recall). Perhaps we should adopt similar rules for Topic Maps. Cheers, Tom P
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