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Extracted sub-keywords

Adjustment of

sub-keywords’ weights

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User

Re-ranking system

Retrieve Web pages

Obtain titles and snippets

of the top N search results

Make a morphological analysis to extract specific nouns

Calculate tf

idf values for all the words

and select the top 5 words with the highest values

Calculate similarity

based on new chart items and chart values

Re-rank pages based on similarity

Web

Yahoo! API

Query keyword

Sub-keywords

and radar chart

Adjust chart values,

or change chart items

New chart items

and values

Re-ranked results

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influenza

provision

cold

prevention

information

avian

keyword

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Order before re-ranking

Radar chart

keyword

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selected by the user

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Matsui

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India

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After re-ranking

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Percentage of individuals giving their impression

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Percentage of individuals giving their impression

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Beijing

American

President

Microsoft

Chairman

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Percentage of individuals finding the pre-specified pages

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References

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