| Weighting:
Inverse Host Frequency (IHF) |
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| • | We
notice that using hostnames alone may be |
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| problematic |
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| – | Especially
when a host has multiple hostnames or is |
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| represented
by an IP address with dissimilar |
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| distributions |
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| – | e.g.
www.informatik.uni-trier.de, ftp.informatik.uni- |
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| trier.de
and 136.199.54.185 are the same host |
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| • | Therefore,
we also experimented with |
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| – | Domain
(e.g. uni-trier.de) |
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| – | Resolving
hostnames to IP addresses |
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