A primary reason that people use the Web is to search for specific infirmation, including text, pictures, music and video
Types of search tools
| Search engine (keyword search) | Subject directory (directory search) |
|---|---|
| Finds information related to a specific topics | Classifies Web pages in an organized set of categories |
Search engine
- a program that searches documents for specified keywords and returns a list of the documents where the keywords were found.
- requires the user to enter a word or phrase, called search text or search query.
- each word of the search text is known as keyword.
Subject directory
- Classifies Web pages in an organized set of categories such as sport or shopping and related subcategories.
- Examples of search tools:
1. AltaVista,
2. Yahoo!,
3. Google,
4. Excite
- A subject directory provides categorized lists of links arranged by subject
- When click on the category link, the subject directory displays a list of subcategory links
- The disadvantage – users have difficulty deciding which categories to choose as the menus of links presented
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