Shannon defined information as the reduction of uncertainty. Artificial intelligence regards data as the raw material of information. Information is the what of what is represented. Knowledge is the what and how of what is represented. In addition, data has also been considered as facts in isolation.
Information is data refined relative to a specific decision-making context.
One person's information is another person's data. Information technology concentrates on the technical aspects of processing, communicating and transferring information. Knowledge is the application and productive use of information. In addition, the above sources make no reference to other important aspects of knowledge, for instance skill , idea , organization , and innovation . It appears humans are far from being able or in a position to express themselves clearly about knowledge and its content and context.