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- Browsing: goal independence <sum08 1 4>
- ===========================
-
- Definition --- Browsing means finding new or unexpected information.
-
- Fact: You cannot browse a textual database. Why?
- =====
- (1) Textual database searches use vocabulary matches. <link26 3>
- (2) Without knowing all vocabulary or synonyms, then how do you search?
-
- Fact: Textual databases only find what you already know. Why? <link26>
- =====
- (1) Boolean searches only find exact matches, not close fits.
- (2) How do you know if you are using the wrong or right patterns?
-
- Conclusion:
- ===========
-
- Traditional textual databases and Boolean searches may verify what
- you know, but are ineffective in producing new or unexpected
- information. <link33 1 8>
-
- The solution .............. (press PgDn)
-
- Why browsing works with hypertext information
- =============================================
-
- Rather than force users to guess the magic retrieval words for each
- search within a textual database, hypertext can organize information
- into a series of hierarchical classifications. Such hierarchical
- classifications present users with choices that lead directly to
- their desired information, without prior knowledge of their existence.
-
- Key points:
- ===========
-
- Factors that determine effective browsing <link43> are:
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- (1) The set of available hypertext choices appear complete
- (2) The set of available hypertext choices appear appropriate
- (3) The set of available hypertext choices appear correctly ordered
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- If these factors are present, users can quickly find whatever they
- desire. Why? Because the system becomes predictable at all points.
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- While software for browsing should be easily understood, it is the
- skills of the hypertext developer who ultimately makes the
- contained knowledge naturally obvious to all viewers.