- variational
- adjective see variation
New Collegiate Dictionary. 2001.
variational
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variaţional — VARIAŢIONÁL, Ă, variaţionali, e, adj. Referitor la variaţie. [pr.: ri a ţi o ] – Din fr. variationnel, engl. variational. Trimis de bogdanrsb, 11.08.2002. Sursa: DEX 98 variaţionál adj. m., pl. variaţionáli; … Dicționar Român
variational — variation ► NOUN 1) a change or slight difference in condition, amount, or level. 2) a different or distinct form or version. 3) Music a new but still recognizable version of a theme. DERIVATIVES variational adjective … English terms dictionary
Variational Bayesian methods — Variational Bayesian methods, also called ensemble learning, are a family of techniques for approximating intractable integrals arising in Bayesian statistics and machine learning. They can be used to lower bound the marginal likelihood (i.e.… … Wikipedia
Variational inequality — is a mathematical theory intended for the study of equilibrium problems. Guido Stampacchia put forth the theory in 1964 to study partial differential equations. The applicability of the theory has since been expanded to include problems from… … Wikipedia
Variational message passing — (VMP) is an approximate inference technique for continuous valued Bayesian networks, with conjugate exponential parents, developed by John Winn in his PhD thesis. John Winn is now at Microsoft Research. VMP was developed as a means of… … Wikipedia
Variational Monte Carlo — Variational Monte Carlo(VMC) is a quantum Monte Carlo method that applies the variational method to approximate the ground state of the system. The expectation value necessary can be written in the x representation as frac{langle Psi(a) | H |… … Wikipedia
Variational integrator — Variational integrators are numerical integrators for Hamiltonian systems derived from the Euler Lagrange equations of a discretized Hamilton s principle. Variational integrators are momentum preserving and symplectic.References* E. Hairer, C.… … Wikipedia
Variational methods in general relativity — refers to various mathematical techniques that employ the use of variational calculus in Einstein s theory of general relativity. The most commonly used tools are Lagrangians and Hamiltonians and are used to derive the Einstein field… … Wikipedia
Variational principle — A variational principle is a principle in physics which is expressed in terms of the calculus of variations. According to Cornelius Lanczos, any physical law which can be expressed as a variational principle describes an expression which is self… … Wikipedia
Variational perturbation theory — In mathematics, variational perturbation theory is a mathematical method to convert divergent power series in a small expansion parameter, say :s=sum {n=0}^infty a n g^n, into a convergent series in powers :s=sum {n=0}^infty b n /(g^omega)^n,… … Wikipedia
Variational method (quantum mechanics) — The variational method is, in quantum mechanics, one way of finding approximations to the lowest energy eigenstate or ground state, and some excited states. The basis for this method is the variational principle. Introduction Suppose we are given … Wikipedia
