The phrase "a simpler approximation of" is correct and usable in written English.
You can use it when discussing a version of something that is easier to understand or calculate compared to a more complex original.
Example: "In this study, we present a simpler approximation of the mathematical model to facilitate easier analysis."
Alternatives: "a more straightforward estimate of" or "an easier version of".
In FEM, the whole object is discretised and each element will have a simpler approximation of the solution which will be joined later with other elements of the same object to form the global solution (Hughes 1987).
Because an accurate approximation of the true APPs is less critical for the proper operation of the EM algorithm, we propose a simpler approximation of the APP computation with roughly half the complexity of max-log MAP and with substantially less memory requirements.
This probability can be computed using Equation 72 above, but the large sums of hypergeometric functions suggest that a simpler approximation of the heteroplasmy distribution may be desirable, both for computational simplicity and intuitive interpretability.
To our knowledge, the paper by Degond et al. [45] contains the first attempt to construct a simple approximation of (vert A_{ij}vert) by means of a polynomial that approximates (vert xvert) without interpolating it exactly on the eigenvalues.
The result is a simple approximation of the probability of failure without any limitation becoming feasible.
A simple approximation of these costs is (i m + c) ∆m1 and is captured by using m1 − instead of m1+.
A simple approximation of a cell's coverage area and borders can be made using Voronoi diagrams as described by Baert and Seme [21].
A simple approximation of water solubility under current conditions can be made by considering the ratio of ethylene oxide units (EO) to the carbon number (N).
The susceptibility to deformation localization of simple cubic arrangements of struts, which are a simple approximation of the micro-architecture in cancellous bone, is analyzed.
A simple approximation of the mutual information is used in our analysis: I_{x} approx 1 -frac{1}{L}sumlimits_{n=0}^{L-1}logleft(1+expleft -xL_{x}right)right), (27).
A simple approximation of ground effect is analyzed for two cases: (1) stationary point source and (2) moving line source (train).
