Information flow (information theory)

Information flow in an information theoretical context is the transfer of information from a variable x {\displaystyle x} to a variable y {\displaystyle y} in a given process. Not all flows may be desirable; for example, a system should not leak any confidential information (partially or not) to public observers—as it is a violation of privacy on an individual level, or might cause major loss on a corporate level.

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