Definition, Meaning, Synonyms & Anagrams | English word PARAMETER

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Definitions of PARAMETER

1. A value kept constant during an experiment, equation, calculation or similar, but varied over other versions of the experiment, equation, calculation, etc.
2. A characteristic or feature that distinguishes something from others.
3. (sciences) A variable that describes some system (material, object, event etc.) or some aspect thereof.
4. (programming) An input variable of a function definition, that gets an actual value (argument) at execution time.
5. (programming, loosely) An actual value given to such a formal parameter.
6. (geometry) In the ellipse and hyperbola, a third proportional to any diameter and its conjugate, or in the parabola, to any abscissa and the corresponding ordinate.
7. (crystallography) The ratio of the three crystallographic axes which determines the position of any plane.
8. (crystallography) The fundamental axial ratio for a given species.

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Examples of Using PARAMETER in a Sentence

• Color temperature is a parameter describing the color of a visible light source by comparing it to the color of light emitted by an idealized opaque, non-reflective body.
• In the literature of location parameter estimation, the probability distributions with such parameter are found to be formally defined in one of the following equivalent ways:.
• That is, a parameter is an element of a system that is useful, or critical, when identifying the system, or when evaluating its performance, status, condition, etc.
• Statistical purposes include estimating a population parameter, describing a sample, or evaluating a hypothesis.
• Speech coding uses speech-specific parameter estimation using audio signal processing techniques to model the speech signal, combined with generic data compression algorithms to represent the resulting modeled parameters in a compact bitstream.
• The modification of a system parameter may be discrete, as in hard-switched diversity reception, or may be continuous, as in a.
• In physics and electrical engineering the reflection coefficient is a parameter that describes how much of a wave is reflected by an impedance discontinuity in the transmission medium.
• SNR is an important parameter that affects the performance and quality of systems that process or transmit signals, such as communication systems, audio systems, radar systems, imaging systems, and data acquisition systems.
• The step-index profile corresponds to a power-law index profile with the profile parameter approaching infinity.
• A likelihood function (often simply called the likelihood) measures how well a statistical model explains observed data by calculating the probability of seeing that data under different parameter values of the model.
• In statistics, the likelihood-ratio test is a hypothesis test that involves comparing the goodness of fit of two competing statistical models, typically one found by maximization over the entire parameter space and another found after imposing some constraint, based on the ratio of their likelihoods.
• However, the Franck–Condon principle binds the upper limit of this parameter to the order of attoseconds.
• This choice simplifies the primitivity test and k-distribution test that are needed in the parameter search.
• The exponential distribution is sometimes parametrized in terms of the scale parameter , which is also the mean:.
• where J is the current density at a given location in a resistive material, E is the electric field at that location, and σ (sigma) is a material-dependent parameter called the conductivity, defined as the inverse of resistivity ρ (rho).
• In electromagnetics, an antenna's gain is a key performance parameter which combines the antenna's directivity and radiation efficiency.
• The parameter is named after Vincenc Strouhal, a Czech physicist who experimented in 1878 with wires experiencing vortex shedding and singing in the wind.
• A fourth optional parameter (not used here) specifies how far the arc continues, and defaults to 5 degrees.
• In mathematics, particularly in dynamical systems, a bifurcation diagram shows the values visited or approached asymptotically (fixed points, periodic orbits, or chaotic attractors) of a system as a function of a bifurcation parameter in the system.
• His accomplishments include the independent co-discovery of the density matrix method in quantum mechanics (alongside John von Neumann), the quantum mechanical theory of diamagnetism, the theory of superfluidity, the theory of second-order phase transitions, invention of order parameter technique, the Ginzburg–Landau theory of superconductivity, the theory of Fermi liquids, the explanation of Landau damping in plasma physics, the Landau pole in quantum electrodynamics, the two-component theory of neutrinos, and Landau's equations for S-matrix singularities.
• The method of least squares is a parameter estimation method in regression analysis based on minimizing the sum of the squares of the residuals (a residual being the difference between an observed value and the fitted value provided by a model) made in the results of each individual equation.
• For systems such as the logistic map, the bifurcation diagram shows a range of parameter values for which apparently the only cycle has period 3.
• That is, a parameter value is in the Diophantine set S if and only if the associated Diophantine equation is satisfiable under that parameter value.
• Perturbation theory develops an expression for the desired solution in terms of a formal power series known as a perturbation series in some "small" parameter, that quantifies the deviation from the exactly solvable problem.
• The point in the parameter space that maximizes the likelihood function is called the maximum likelihood estimate.

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