Entropy (disambiguation)

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Additional relevant articles may be found in the following categories:

Entropy originates from machine engineering, where in a process involving heat it is a measure of the portion of heat becoming unavailable for doing work, e.g. reversal of the process just mentioned. Entropy is also frequently used with emphasis of order or disorder properties of disparate areas and surveyed in the following:


Interdisciplinary applications of entropy[edit]

Although the concept of entropy was originally a thermodynamic construct, it has been adapted in other fields of study, including information theory, psychodynamics, economics, and evolution.

Information theory and mathematics[edit]

  • Entropy (information theory), a measure of the amount of information contained in a message
  • Entropy encoding, data compression strategies to produce a code length equal to the entropy of a message
  • Kolmogorov–Sinai entropy, the rate of information generation by a measure-preserving dynamical system
  • Rényi entropy, a family of diversity measures used to define fractal dimensions
  • Topological entropy, a measure of exponential growth in the number of distinguishable orbits of a dynamical system
  • Volume entropy, a Riemannian invariant measuring the exponential rate of volume growth of a Riemannian metric

Computer science[edit]




The concept of entropy has also entered the domain of sociology, generally as a metaphor for chaos, disorder or dissipation of energy, rather than as a direct measure of thermodynamic or information entropy:

  • Economic entropy, a semi-quantitative measure of the irrevocable dissipation and degradation of natural materials and available energy with respect to economic activity
  • Psychological entropy, the distribution of energy in the psyche, which tends to seek equilibrium or balance among all the structures of the psyche
  • Social entropy, a measure of social system structure, having both theoretical and statistical interpretations, i.e. society (macrosocietal variables) measured in terms of how the individual functions in society (microsocietal variables); also related to social equilibrium



Media and popular culture[edit]