Entropy is a scientific concept that is most commonly associated with a state of disorder, randomness, or uncertainty. The term and the concept are used...

In information theory, the entropy of a random variable is the average level of "information", "surprise", or "uncertainty" inherent to the variable's...

In information theory, the cross-entropy between two probability distributions p {\displaystyle p} and q {\displaystyle q} , over the same underlying...

process." The second law of thermodynamics establishes the concept of entropy as a physical property of a thermodynamic system. It predicts whether processes...

statistics, the Kullback–Leibler (KL) divergence (also called relative entropy and I-divergence), denoted D KL ( P ∥ Q ) {\displaystyle D_{\text{KL}}(P\parallel...

and electrical engineering. A key measure in information theory is entropy. Entropy quantifies the amount of uncertainty involved in the value of a random...

energy, and will therefore be unable to sustain processes that increase entropy. Heat death does not imply any particular absolute temperature; it only...

constant, and in Planck's law of black-body radiation and Boltzmann's entropy formula, and is used in calculating thermal noise in resistors. The Boltzmann...

entropy is a sociological theory that evaluates social behaviours using a method based on the second law of thermodynamics. The equivalent of entropy...

Rényi entropy is a quantity that generalizes various notions of entropy, including Hartley entropy, Shannon entropy, collision entropy, and min-entropy. The...

Look up entropy in Wiktionary, the free dictionary. Entropy, in thermodynamics, is a property originally introduced to explain the part of the internal...

The entropy unit is a non-S.I. unit of thermodynamic entropy, usually denoted "e.u." or "eU" and equal to one calorie per kelvin per mole, or 4.184 joules...

In information theory, an entropy coding (or entropy encoding) is any lossless data compression method that attempts to approach the lower bound declared...

Entropy is one of the few quantities in the physical sciences that require a particular direction for time, sometimes called an arrow of time. As one...

Maximum entropy thermodynamics Maximum entropy spectral estimation Principle of maximum entropy Maximum entropy probability distribution Maximum entropy classifier...

Entropy: Zero 2 is a 2022 first-person shooter video game developed and published by Breadmen. It is a single-player modification for Half-Life 2 (2004)...

physical process capable of producing entropy (in other words, the device always has access to a physical entropy source), unlike the pseudorandom number...

The third law of thermodynamics states that the entropy of a closed system at thermodynamic equilibrium approaches a constant value when its temperature...

In cryptography full entropy is a property of an output of a random number generator. The output has full entropy if it cannot practically be distinguished...

Research concerning the relationship between the thermodynamic quantity entropy and both the origin and evolution of life began around the turn of the...

including the macroscopic entropy, though microscopically referable to the Gibbs statistical mechanical definition of entropy for the canonical ensemble...

law of thermodynamics requires that black holes have entropy. If black holes carried no entropy, it would be possible to violate the second law by throwing...

entropy states that the probability distribution which best represents the current state of knowledge about a system is the one with largest entropy,...

The concept entropy was first developed by German physicist Rudolf Clausius in the mid-nineteenth century as a thermodynamic property that predicts that...

In information theory, the conditional entropy quantifies the amount of information needed to describe the outcome of a random variable Y {\displaystyle...

Differential entropy (also referred to as continuous entropy) is a concept in information theory that began as an attempt by Claude Shannon to extend...

In physics, the von Neumann entropy, named after John von Neumann, is an extension of the concept of Gibbs entropy from classical statistical mechanics...

In computing, entropy is the randomness collected by an operating system or application for use in cryptography or other uses that require random data...

In chemical kinetics, the entropy of activation of a reaction is one of the two parameters (along with the enthalpy of activation) which are typically...

In physics, the Tsallis entropy is a generalization of the standard Boltzmann–Gibbs entropy. It is proportional to the expectation of the q-logarithm...