With the World Wide Web growing so rapidly each day and even each minute, the Internet just becomes to big to handle. In fig 1.1 is an example of an Information Overload; that is when too much information is retrieved, and the user cannot handle it.
Techniques must be used to find the correct and relevant information. Information filtering or Selective Dissemination of Information is a “tool” that must be used when finding information on the Internet. It is important to know how to filter through information and precisely why a user must do so. There are many information filtering “agents” that can be used to assist the user in filtering through information. Some websites and companies use Push Technology to help the user to receive information easier.
· What is the need for Personalized Information Services on the Web?
· What is an information agent, and how does it work?
· What is push technology, and when is it used?
2. Selective Dissemination of information:
2.1 What is Selective Dissemination of Information?
Workers can fill in a form, specifying what they would like to receive or where their interests lie for example: A person working at the accounting department of a large firm would prefer to receive the latest financial information from the various sources, a Selective dissemination of information worker or agent will then search for these sources and the information on behalf of the worker and pass it on as soon as possible.
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