The phrase "a model is defined" is correct and usable in written English.
It can be used in contexts where you are explaining or describing the characteristics or parameters of a model in a specific field, such as science, mathematics, or engineering.
Example: "In our research paper, we state that a model is defined by its parameters and the assumptions made during its development."
Alternatives: "a model is described" or "a model is established".
The Middleton Class A model is defined for only real sample observation.
A model is defined as anything of a particular style, form, construction, shape, size, quality, or functionality intended for imitation.
A model is defined as consisting of a set of worlds together with a value assignment of the kind just described.
In this work a model is defined allowing for a rapid calculation of chord length distributions as well as the prediction of in situ microscopy data.
Such a model is defined by a set Xρ(Z)="{ x,z ∈Rn×Z|∑j= 1nxjρd,0⩽xj⩽ujzj,…,n},…,n}, where ρ is one of ⩽, =" or ⩾, and Z⊂{0,1}n consists of the allowed configurations.
A model is defined for dataset 1, then fake_pha is run to simulate a grouped, 10ks source-plus-background spectrum, using the responses and background data associated with PHA data set 1 (replacing the loaded PHA data in data set 1 with the faked counts).
Using these coefficients, a model was defined to allow for the estimation of the flood abatement effect of a reservoir based on the available information.
In 1959 a model was defined in a domain D. The result was that all worlds in one model have the same cardinality.
The participants received a document describing possible generic errors that could happen when a reuse code or a model are defined incorrectly.
The genomic AD of a model was defined based on the Euclidean distance [30] using the method shown as follows.
For each subject a model was defined: an input to the amygdala, and values of intrinsic connectivity in each direction were extracted and served for a 2-way ANOVA (factors: valence-negative, neutral; eyes-closed, open).
