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 |
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| • |
Observation
|
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|
– |
Not
all URLs are equally
|
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useful
|
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|
– |
e.g.,
aggregator services
|
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| • |
Desired
weighting scheme
|
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|
– |
Low
weights to aggregator
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web
sites
|
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|
– |
High
weights to personal and
|
|
group
publication pages
|
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| • |
Inverse
Host Frequency (IHF)
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|
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|
– |
Similar
to Inverse Document
|
|
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Frequency
(IDF) in
|
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|
information
retrieval
|
|
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| • |
Consider
citations of top
|
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|
100
authors in DBLP (by
|
|
|
number
of citations)
|
|
|
| • |
For
each such citation,
|
|
|
query
search engine with
|
|
its
title to obtain URLs,
|
|
|
truncate
them to their
|
|
|
hostnames
|
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|
| • |
If
a hostname h has
|
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|
frequency
f(h), then its
|
|
|
IHF
is
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|
