Topic 1 Introduction to Internet Resources
Categories Subjects Purpose Search Facilities Search Strategy
Search engines
- Limitations
- A single search engine can only find a portion of the relevant
web pages
- Frequent changes in the web but the indexing process is
slower
- Rely on computer programs, yield irrelevant results due
to language e.g. china
Search engines how different?
- Size how much of the web is indexed
- Scope does it index in general or a specialized
area
- Formats does it also index image, audio and video
files
- Currency how often is it being updated
- Ways of searching can a complete sentence be entered
in the search box
- Results display does it only display title
- Results ranking how does it rank search results
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