1. Information is an occurrence or a set of occurrences which carry messages and, when perceived by the recipients, will increase their state of knowledge. It is therefore the increase in knowledge obtained by the recipient by matching proper data elements to the variables of a problem. Information is substantially different from data or signals in that they are raw, unevaluated messages. Information processing of data to provide knowledge or intelligence, and as such the primary function of an information system is to increase the knowledge or reduce the uncertainty of the user. The significance or value of information received can only be measured by the recipient.
2. Information includes the messages occurring in any of the standard communication media, the signals occurring in computers, servomechanism systems and other data processing devices, as well as the signals in nerve networks.
3. The process by which the form of an object of knowledge is impressed upon the apprehending mind so as to bring about the state of knowledge.