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entropic vector or entropic function is a concept arising in information theory. It represents the possible values of Shannon's information entropy that
Entropic_vector
Theory in modern physics that describes gravity as an entropic force
Entropic gravity, also known as emergent gravity, is a theory in modern physics that describes gravity as an entropic force—a force with macro-scale homogeneity
Entropic_gravity
Vector in relativity
In special relativity, a four-vector (or 4-vector, sometimes Lorentz vector) is an element of a four-dimensional vector space object with four components
Four-vector
Coherent measure for value at risk
concept of relative entropy. Because of its connection with the VaR and the relative entropy, this risk measure is called "entropic value at risk". The
Entropic_value_at_risk
Adage that anything that can go wrong will go wrong
220-222 Hand, pp. 197-198 Robert D. Handscombe, Eann A. Patterson, The Entropy Vector: Connecting Science and Business, p134, World Scientific, 2004, ISBN 981-238-571-1
Murphy's_law
Information-theoretic measure
In information theory, the cross-entropy between two probability distributions p {\displaystyle p} and q {\displaystyle q} , over the same underlying
Cross-entropy
Assignment of a vector to each point in a subset of Euclidean space
In vector calculus and physics, a vector field is an assignment of a vector to each point in a space, most commonly Euclidean space R n {\displaystyle
Vector_field
Set-to-real map with diminishing returns
Further inequalities for the entropy function are known to hold, see entropic vector. Matroid rank functions Let Ω = { e 1 , e 2 , … , e n } {\displaystyle
Submodular_set_function
Concept in information theory
vector to another random vector with same dimension Y = m ( X ) {\displaystyle \mathbf {Y} =m\left(\mathbf {X} \right)} , the corresponding entropies
Differential_entropy
Non-parametric statistic on information transfer
Y}=I(Y_{t};X_{t-1:t-L}\mid Y_{t-1:t-L}).} Transfer entropy reduces to Granger causality for vector auto-regressive processes. Hence, it is advantageous
Transfer_entropy
Concept in information theory
Applications often exploit the following relation between the Rényi entropy and the α-norm of the vector of probabilities: H α ( X ) = α 1 − α log ( ‖ P ‖ α )
Rényi_entropy
Average uncertainty in variable's states
In information theory, the entropy of a random variable quantifies the average level of uncertainty or information associated with the variable's potential
Entropy_(information_theory)
Standardized means of organizing and storing digital images
lossy compression or lossless compression. For graphic design applications, vector formats are often used. Some image file formats support transparency. Raster
Image_file_format
Modification of approximate entropy
the sample entropy to be S a m p E n = − ln A B {\displaystyle SampEn=-\ln {A \over B}} Where A {\displaystyle A} = number of template vector pairs having
Sample_entropy
Type of entropy in quantum theory
entropy is not the only reasonable entanglement measure. Some of the other measures are also entropic in character. For example, the relative entropy
Von_Neumann_entropy
Concept in information theory
h_{I}=H(X_{i}\colon i\in I)} is their joint entropy, for each subset I {\displaystyle I} . The set of entropic vectors is denoted Γ n ∗ {\displaystyle \Gamma
Inequalities in information theory
Inequalities_in_information_theory
Generalization of the one-dimensional normal distribution to higher dimensions
normal distribution to higher dimensions. One definition is that a random vector is said to be k-variate normally distributed if every linear combination
Multivariate normal distribution
Multivariate_normal_distribution
Classical quantization technique from signal processing
Vector quantization (VQ) is a classical quantization technique from signal processing that allows the modeling of probability density functions by the
Vector_quantization
Molecular model for describing polymers
which means that this force necessarily stems from a purely entropic effect. This entropic force is very similar to the pressure experienced by the walls
Ideal_chain
Methods of estimating differential entropy given some observations
2007.913132 Costa, J.A.; Hero, A.O. (2004), Geodesic entropic graphs for dimension and entropy estimation in manifold learning. In Signal Processing
Entropy_estimation
Subject of study in ergodic theory
type; the base flow of a random dynamical system; the flow of a Hamiltonian vector field on the tangent bundle of a closed connected smooth manifold is measure-preserving
Measure-preserving dynamical system
Measure-preserving_dynamical_system
Input to a cryptographic primitive
In cryptography, an initialization vector (IV) or starting variable is an input to a cryptographic primitive being used to provide the initial state. The
Initialization_vector
Principle in Bayesian statistics
maximum entropy. One of the main applications of the maximum entropy principle is in discrete and continuous density estimation. Similar to support vector machine
Principle_of_maximum_entropy
Property of space that quantifies the magnetic influence at a given location
mathematically by assigning a vector to each point of space, making it a vector field. There are two different, but closely related, vector fields which are called
Magnetic_field
Classical statement of gravity as force
{r_{2}-r_{1}} }{|\mathbf {r_{2}-r_{1}} |}}} is the unit vector from body 1 to body 2. It can be seen that the vector form of the equation is the same as the scalar
Newton's law of universal gravitation
Newton's_law_of_universal_gravitation
American electrical engineer
group-theoretic techniques to design space-time codes and frames and to study entropic vectors, performed information-theoretic studies of various wireless networks
Babak_Hassibi
Concept in financial economics
extended for more general Orlitz Hearts from the more typical Lp spaces. The entropic value at risk is a coherent risk measure. The tail value at risk (or tail
Coherent_risk_measure
Notion in statistics
with respect to θ. The support of f(X; θ) does not depend on θ. If θ is a vector then the regularity conditions must hold for every component of θ. It is
Fisher_information
Physical constant relating particle kinetic energy with temperature
{v^{2}}}={\tfrac {3}{2}}kT.} Considering that the translational motion velocity vector v has three degrees of freedom (one for each dimension) gives the average
Boltzmann_constant
Family of probability distributions related to the normal distribution
be vector-valued such that η ( θ ) ⋅ T ( x ) {\displaystyle \eta (\theta )\cdot T(x)} is real-valued. However, see the discussion below on vector parameters
Exponential_family
Models used to produce word embeddings
technique in natural language processing for obtaining vector representations of words. These vectors capture information about the meaning of the word based
Word2vec
American scientist (1839–1903)
statistical ensemble, phase space, chemical potential, Gibbs entropy, Gibbs paradox Mathematics: Vector Analysis, convex analysis, Gibbs phenomenon Electromagnetism:
Josiah_Willard_Gibbs
Influence that can change motion of an object
magnitude and direction of a force are both important, force is a vector quantity (force vector). The SI unit of force is the newton (N), and force is often
Force
Process in linear algebra
its originator Erhard Schmidt) refers to a particular way of expressing a vector in the tensor product of two inner product spaces. It has numerous applications
Schmidt_decomposition
their transformation properties (i.e. whether the quantity is a scalar, vector, matrix or tensor), and whether the quantity is conserved. List of photometric
List_of_physical_quantities
Concept in statistics
-dimensional vector that contains the run of data starting with u ( i ) {\displaystyle u(i)} . Define the distance between two vectors x ( i ) {\displaystyle
Approximate_entropy
Approximate nearest neighbor search algorithm
searching vector data. In these systems, an item such as a document, image, song, or user profile is represented by a list of numbers called a vector. Items
Hierarchical navigable small world
Hierarchical_navigable_small_world
Non-fiction work by Colin Greenland
(1983) in Foundation, #29 November 1983 Review by Paul Brazier (1984) in Vector 120 Pringle, Dave (June 1983). "Book Review". Imagine (review) (3). TSR
The_Entropy_Exhibition
Process by which a quantum system takes on a definitive state
quantum mechanics, wave function collapse, also called reduction of the state vector, occurs when a wave function—initially in a superposition of several eigenstates—reduces
Wave_function_collapse
Development of entropy in a thermodynamic system
Entropy production (or generation) is the amount of entropy which is produced during heat process to evaluate the efficiency of the process. Entropy is
Entropy_production
Physics phenomenon
into account the higher order moments of canonical operators or by using entropic measures. There is a fundamental conflict, referred to as the problem of
Quantum_entanglement
Form of the utility function
lack of realism due to its feature of constant absolute risk aversion. Entropic risk measure Isoelastic (power) utility function Arrow, K. J. (1965). The
Exponential_utility
Measure of distinguishability between two quantum states
the probability vector ( λ 1 , … , λ n ) {\displaystyle (\lambda _{1},\ldots ,\lambda _{n})} with respect to the probability vector ( μ 1 , … , μ n )
Quantum_relative_entropy
Branch of physics which studies the behavior of materials modeled as continuous media
{q}}~{\text{dA}}+\int _{\Omega }\rho ~r~{\text{dV}}.} The scalar entropy flux can be related to the vector flux at the surface by the relation q ¯ = − ψ ( x ) ⋅
Continuum_mechanics
Probability distribution
of continuous multivariate probability distributions parameterized by a vector α of positive reals. It is a multivariate generalization of the beta distribution
Dirichlet_distribution
Cryptographic key-wrapping algorithm
authenticated encryption algorithm providing confidentiality for highly entropic messages such as cryptographic keys. The AES Key Wrap Specification, AESKW
Key_wrap
Term in information theory
measure for random vectors in Euclidean space, based on the normalized entropy of finely quantized versions of the random vectors. This concept was first
Information_dimension
Vector field representing a mass's effect on surrounding space
physics, a gravitational field or gravitational acceleration field is a vector field used to explain the influences that a body extends into the space
Gravitational_field
Simple model of a polymer
thermal fluctuations reduces, which causes an entropic force acting against the external elongation. This entropic force can be estimated from considering the
Worm-like_chain
Property of a mathematical space
dimension of a vector space is the number of vectors in any basis for the space, i.e. the number of coordinates necessary to specify any vector. This notion
Dimension
Rule for estimating the mean of a dataset
where the estimator has been used to improve the theoretical bounds of the entropic uncertainty principle for more than three measurements. An intuitive derivation
James–Stein_estimator
Idea in quantum gravity
emerges in the low-temperature limit. Black hole thermodynamics Entropic force Entropic gravity List of quantum gravity researchers Superfluid vacuum theory
Induced_gravity
Concept in the physics of electromagnetism
In electromagnetism, the magnetic moment or magnetic dipole moment is a vector quantity which characterizes the strength and orientation of a magnet or
Magnetic_moment
Description of quantum mechanics in which the present depends on both the past and future
The two-state vector formalism (TSVF) is a description of quantum mechanics in terms of a causal relation in which the present is caused by quantum states
Two-state_vector_formalism
Probability distribution
(/ˈreɪli/). A Rayleigh distribution is observed when the overall magnitude of a vector in the plane is related to its directional components. One example where
Rayleigh_distribution
Proposed theories of gravity
true of vector–tensor theories, the deviation of the vector–tensor theories from general relativity is being squashed to zero. Further, vector–tensor theories
Alternatives to general relativity
Alternatives_to_general_relativity
Stam (1959) showed that the condition is in fact necessary. For a random vector X : Ω → R n {\displaystyle X:\Omega \to \mathbb {R} ^{n}} with probability
Entropy_power_inequality
Mathematical entity to describe the probability of each possible measurement on a system
represented as a vector in a Hilbert space. Mixed states are statistical mixtures of pure states and cannot be represented as vectors on that Hilbert space
Quantum_state
Foundational principle in quantum physics
normal distributions maximize the entropy of all such with a given variance), it readily follows that this entropic uncertainty principle is stronger
Uncertainty_principle
Process of mapping a continuous set to a countable set
further generalized in a straightforward way to also include an entropy constraint for vector data. The Lloyd–Max quantizer is actually a uniform quantizer
Quantization (signal processing)
Quantization_(signal_processing)
Regression for more than two discrete outcomes
}}_{k}\cdot \mathbf {X} _{i},} where Xi is the vector of explanatory variables describing observation i, βk is a vector of weights (or regression coefficients)
Multinomial logistic regression
Multinomial_logistic_regression
Concept in financial mathematics
Expected shortfall Superposed risk measures Entropic value at risk Drawdown Tail conditional expectation Entropic risk measure Superhedging price Expectile
Risk_measure
Vector with non-negative entries that add up to one
a probability vector or stochastic vector is a vector with non-negative entries that add up to one. Underlying every probability vector is an experiment
Probability_vector
Scientific study of digital information
joint entropy is just a subcase of entropy where the random variable is a vector giving values in the product space. The conditional entropy or conditional
Information_theory
powerful theory is needed, and the second entropy is part of such a theory. Onsager (1931, I) wrote: "Thus the vector field J of the heat flow is described
Extremal principles in non-equilibrium thermodynamics
Extremal_principles_in_non-equilibrium_thermodynamics
Restatement of Newton's law of universal gravitation
gravitational field g (also called gravitational acceleration) is a vector field – a vector at each point of space (and time). It is defined so that the gravitational
Gauss's_law_for_gravity
Relativistic generalization of Mordehai Milgrom's MOND paradigm
Tensor–vector–scalar gravity (TeVeS), developed by Jacob Bekenstein in 2004, is a relativistic generalization of Mordehai Milgrom's Modified Newtonian
Tensor–vector–scalar_gravity
Monte Carlo method for importance sampling and optimization
The cross-entropy (CE) method is a Monte Carlo method for importance sampling and optimization. It is applicable to both combinatorial and continuous
Cross-entropy_method
Thought experiment in statistical physics
is represented by specifying the momentum vector p {\displaystyle \mathbf {p} } and the position vector x {\displaystyle \mathbf {x} } for each particle
Gibbs_paradox
Relations between flows and forces, or gradients, in thermodynamic systems
\rho } The above expression of the first law in terms of entropy change defines the entropic conjugate variables of u {\displaystyle u} and ρ {\displaystyle
Onsager_reciprocal_relations
Notation of differential calculus
settings—such as partial derivatives in multivariable calculus, tensor analysis, or vector calculus—other notations, such as subscript notation or the ∇ operator are
Notation_for_differentiation
Theory of quantum gravity merging quantum mechanics and general relativity
theory with loop quantum gravity, and Lee Smolin et al. with Verlinde entropic gravity and loop gravity. Stephon Alexander, Antonino Marciano and Lee
Loop_quantum_gravity
Hamiltonian operator. A pure quantum state can be represented as a single vector | ψ ⟩ {\displaystyle |\psi \rangle } in the Hilbert space. In the density
Purity_(quantum_mechanics)
phenomenon Gibbs sampling Gibbs state Gibbs's thermodynamic surface Gibbs vector Gibbs–Appell equation of motion Gibbs–Donnan effect Gibbs–Duhem equation
List of things named after Josiah W. Gibbs
List_of_things_named_after_Josiah_W._Gibbs
Time reversal symmetry in physics
to preserve the length of the projection of any one state-vector onto another state-vector. For a particle with spin J, one can use the representation
T-symmetry
Field theory in physics that aims to unify the fundamental forces and particles
are themselves the quanta of fields. Different fields in physics include vector fields such as the electromagnetic field, spinor fields whose quanta are
Unified_field_theory
Theory extending Einstein gravity
Aristotelian physics CGHS model RST model Mechanical explanations Fatio–Le Sage Entropic gravity Physics in the medieval Islamic world Theory of impetus Related
Quadratic_gravity
Measure of similarity and diversity between sets
Correlation Mutual information, a normalized metricated variant of which is an entropic Jaccard distance. Murphy, Allan H. (1996). "The Finley Affair: A Signal
Jaccard_index
Specific probability distribution function, important in physics
distribution with three degrees of freedom (the components of the velocity vector in Euclidean space), with a scale parameter measuring speeds in units proportional
Maxwell–Boltzmann distribution
Maxwell–Boltzmann_distribution
Analogies between Maxwell's and Einstein's field equations
of a gravitation potential ϕ g {\displaystyle \phi _{\text{g}}} and the vector potential A g {\displaystyle \mathbf {A} _{\text{g}}} according to: E g
Gravitoelectromagnetism
Distance between the centers of externally tangent objects
surprising consequences. Systems of hard particles, whose interactions are only entropic, can become ordered. Hard spherocylinders form not only orientationally
Distance_of_closest_approach
Property of a mathematical matrix
nonzero real column vector x , {\displaystyle \mathbf {x} ,} where x T {\displaystyle \mathbf {x} ^{\mathsf {T}}} is the row vector transpose of x . {\displaystyle
Definite_matrix
Science fiction novel series by Dan Simmons
is the location of the Time Tombs, large artifacts surrounded by "anti-entropic" fields that allow them to move backward through time. In the fictional
Hyperion_Cantos
Decision tree algorithm
new test cases (feature vectors) by traversing the decision tree using the features of the datum to arrive at a leaf node. Entropy H ( S ) {\displaystyle
ID3_algorithm
Entropy coding method
standard's Baseline profile. CABAC is also difficult to parallelize and vectorize, so other forms of parallelism (such as spatial region parallelism) may
Context-adaptive binary arithmetic coding
Context-adaptive_binary_arithmetic_coding
{\displaystyle x} denotes a set of variables used to describe the state space. The vector x {\displaystyle x} can also contain variables depending on a continuous
GENERIC_formalism
Concept in quantum information theory
the respective entropy of the bases B 1 {\displaystyle B_{1}} and B 2 {\displaystyle B_{2}} , when measuring a given state. Entropic uncertainty relations
Mutually_unbiased_bases
Motion of particles in a fluid
action of the real numbers on a set. The idea of a vector flow, that is, the flow determined by a vector field, occurs in the areas of differential topology
Flow_(mathematics)
and their notations. Note that bold text indicates that the quantity is a vector. List of letters used in mathematics and science Glossary of mathematical
List of common physics notations
List_of_common_physics_notations
German mathematician (born 1958)
measure for Zn) agrees with the entropy of the above action. Joachim Cuntz and Deninger worked together on Witt vectors. In two papers around 2014, they
Christopher_Deninger
Numeric quantity representing the center of a collection of numbers
Neuman–Sándor mean Quasi-arithmetic mean Root mean square (quadratic mean) Rényi's entropy (a generalized f-mean) Spherical mean Stolarsky mean Weighted geometric
Mean
Theory proposed by Roger Penrose
particles with spin. It is the projectivisation of a 4-dimensional complex vector space, non-projective twistor space T {\displaystyle \mathbb {T} } , with
Twistor_theory
und Physik 62, 225 Walter, S. (2007). Renn, J. (ed.). "Breaking in the 4-vectors: the four-dimensional movement in gravitation, 1905–1910" (PDF). The Genesis
History of gravitational theory
History_of_gravitational_theory
Modified theory of gravity developed by John Moffat
Scalar–tensor–vector gravity (STVG) is a modified theory of gravity developed by John Moffat, a researcher at the Perimeter Institute for Theoretical Physics
Scalar–tensor–vector_gravity
Aerodynamic theorem
theorem relates the flow velocity, vorticity, and stagnation pressure (or entropy) of a potential flow. This theorem gives the relation between the thermodynamics
Crocco's_theorem
Principle in kinetic systems
the output vectors of the stoichiometric coefficients of the rth elementary reaction. Let Y {\displaystyle Y} be the set of all these vectors α r , β r
Detailed_balance
Open-source CPU instruction set architecture
November 2021. "Vector Extension". RISC-V International. November 2021. "RISC-V Cryptography Extensions Volume I Scalar & Entropy Source Instructions"
RISC-V
Analogy used to study vector fields
mathematics, sources and sinks is an analogy used to describe properties of vector fields. It generalizes the idea of fluid sources and sinks (like the faucet
Sources_and_sinks
Theory of gravity
Aristotelian physics CGHS model RST model Mechanical explanations Fatio–Le Sage Entropic gravity Physics in the medieval Islamic world Theory of impetus Related
Gauss–Bonnet_gravity
Random process independent of past history
conditions the average outcomes of the Markov chain would converge to a fixed vector of values, so proving a weak law of large numbers without the independence
Markov_chain
ENTROPIC VECTOR
ENTROPIC VECTOR
Male
Spanish
Spanish form of Latin Eutropius, EUTROPIO means "versatile."
Female
Greek
(ΕυτÏοπια) Feminine form of Greek Eutropios, EUTROPIA means "versatile." Compare with another form of Eutropia.
ENTROPIC VECTOR
ENTROPIC VECTOR
Girl/Female
Hebrew Spanish
God shall establish.
Girl/Female
American, Australian, Chinese, Christian, Danish, French, German, Greek, Jamaican, Latin
Like a Rose; Rose Flower; Rose; Flower Name
Boy/Male
Hindu, Indian
Rising King
Girl/Female
Hindu
Collected
Girl/Female
Tamil
Sowbhagya | ஸோவபாகà¯à®¯  Â
Lucky girl
Girl/Female
Arabic, Muslim
Wine Cup
Girl/Female
Latin American
Downy grace. A compound of the names Julie and Anne. Also can be interpreted as the feminine form...
Boy/Male
Indian, Sanskrit
A Divine Work of Art
Boy/Male
American, Arabic, Australian, British, Danish, English, French, German
Divinely Glorious; Divine and Wonderful
Girl/Female
Hindu, Indian
Pearl Rose
ENTROPIC VECTOR
ENTROPIC VECTOR
ENTROPIC VECTOR
ENTROPIC VECTOR
ENTROPIC VECTOR
a.
Relating to, or showing, geotropism.
n.
One of the two parallels of terrestrial latitude corresponding to the celestial tropics, and called by the same names.
a.
Of or pertaining to the tropics; tropical.
n.
Same as Entropium.
n.
The region lying between these parallels of latitude, or near them on either side.
a.
Alt. of Entomical
a.
Having a tendency to prevent the development of anything, especially of a disease.
n.
A genus of oceanic birds including the tropic birds.
n.
A certain property of a body, expressed as a measurable quantity, such that when there is no communication of heat the quantity remains constant, but when heat enters or leaves the body the quantity increases or diminishes. If a small amount, h, of heat enters the body when its temperature is t in the thermodynamic scale the entropy of the body is increased by h / t. The entropy is regarded as measured from some standard temperature and pressure. Sometimes called the thermodynamic function.
a.
Relating to objects situated within the eye; esp., relating to the perception of objects in one's own eye.
a.
Having equal entropy.
n.
The inversion or turning in of the border of the eyelids.
n.
The tenth sign of zodiac, into which the sun enters at the winter solstice, about December 21. See Tropic.
a.
Of, pertaining to, or designating, an acid obtained from atropine and certain other alkaloids, as a white crystalline substance slightly soluble in water.
a.
Pertaining to the interior of the ear.
a.
Alt. of Anthropical
n.
One of the two small circles of the celestial sphere, situated on each side of the equator, at a distance of 23¡ 28/, and parallel to it, which the sun just reaches at its greatest declination north or south, and from which it turns again toward the equator, the northern circle being called the Tropic of Cancer, and the southern the Tropic of Capricorn, from the names of the two signs at which they touch the ecliptic.
a.
Out of place; congenitally displaced; as, an ectopic organ.
a.
Having great tension, or exaggerated action.
n.
The tropic bird.