| Motivation |
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| n | Search in
classical Digital |
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| Library (DL):
keyword, |
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| classification,
metadata |
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| n | What if we want
to search |
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| for
photographs, maps, |
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| major
historical events? |
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| n | Search DL using |
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| characterizing
attribute |
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| n | Brings us to
our topic… |
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