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<Paper uid="P98-1093">
  <Title>Information Classification and Navigation Based on 5W1H of the Target Information</Title>
  <Section position="3" start_page="0" end_page="571" type="intro">
    <SectionTitle>
2 Retrieval Requirements In an
Office
</SectionTitle>
    <Paragraph position="0"> Information retrieval is an extremely important part of office work, and particularly crucial in the creation of office documents. The retrieval requirements in office work can be classified into three types.</Paragraph>
    <Paragraph position="1"> Episodic viewpoint: We are often required to make an episode, temporal transition data on a certain event. For example, &amp;quot;Company X succeeded in developing a two-gigabyte memory&amp;quot; makes the user want to investigate what kind of events were announced about Company X's memory before this event. The user has to collect the related events and then arrange them in temporal order to make an episode.</Paragraph>
    <Paragraph position="2"> Comparative viewpoint: The comparative view-point is familiar to office workers. For example, when the user fills out a purchase request form to buy a product, he has to collect comparative information on price, performance and so on, from several companies. Here, the retrieval is done by changing retrieval viewpoints.</Paragraph>
    <Paragraph position="3"> Overall viewpoint: An overall viewpoint is necessary when there is a large amount of classification data. When a user produces a technical analysis report after collecting electronics-related articles from a newspaper over one year, the amount of data is too large to allow global tendencies to be interpreted such as when the events occurred, what kind of companies were involved, and what type of action was required. Here, users have to repeat retrieval and classification by choosing appropriate keywords to condense classification so that it is not too broadranging to understand.</Paragraph>
  </Section>
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