• Web search engine/search engine is a tool designed to search for information on the world wide web.
  • The search results are usually presented in the form of a list and are commonly called hints.
  • The information may consist of a web page, image, information, and other type of file.
  • If you want to view particular information, but you do not know the URL (Uniform Resource Locator) of the website which provides the desired information, then you need a search engine to get the desired information.
Some of the popular search engines are:-
1. Google  (www.google.com)
2.  Yahoo  (www.yahoo.com)
3.  Hotbot  (www.hotbot.com)
4.  India times  (www.indiatimes.com)
5.  Info seek  (www.infoseek.com)
6.   Alta Vista  (www.altavista.com)

These all are some commonly used search engines. In this, Alta Vista is the oldest search engine. There are many other search engines are available.

FEATURES OF A GOOD SEARCH ENGINE:-


1.   Term weighting

  • The interface should be simple. A simple and easy to understand interface will make the search process easy.

2.   Term weighting 

  • The use of a prefix (+) to exclude search terms is supported.

3.  Ranking of output

  • The output is ranked as per its relevance.

4.  Sorted output

  • Another fracture of a good search engine is that output is sorted by the search engine or can be sorted by the user.

5.  Finding a similar

  • The good search engine provides a quick link on every return to allow finding a similar site.

TIPS/GUIDELINES SEARCH FOR WEBPAGE OR SOME SEARCHING TIPS


1. Identify your concepts.

2.  Make a list of search terms for each concept.
Example:- global warming, climate change, crops, crop yield, crop production.

3.  Use operators AND, OR and NOT