Questions tagged [fitting]
Questions on the use of Mathematica to construct models for approximating empirical data.
1,783 questions
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Inconsistent DistributionFitTest results?
In pondering this question, I used Mariana's function to generate the following data.
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Numerical minimization of an objective function (revised)
I'm trying to develop some code that I can easily adapt to different material models
(Propagation Models).
I'm revising my previous question to enable everyone to reproduce the problem with some ...
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Can weighted parameter error estimates from MM13 and earlier be replicated using Around in MM14?
Consider some noisy data with varying levels of uncertainty on each data point:
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Numerical minimization of an objective function [closed]
I'm trying to develop some code that I can easily adapt to different material models (see Propagation Models
For that I have defined a "vector"
that enters into the functions that are the ...
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Plot the error in the curve fitting
I would like to plot the fitted model and the original data punctually. For example, I have:
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Does anyone have Mathematica code for Deming regression?
Deming regression finds a regression line that relates x and y variables for how they covary, i.e., it finds the relationship between x and y, whereas, for example, ordinary least squares would find ...
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Estimate error on slope of linear regression given data with associated uncertainty
Given a set of data, is it possible to create a linear regression which has a slope error that takes into account the uncertainty of the data?
This is for a high school class, and so the normal ...
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Difference between Mathematica NonlinearModelFit and Excel Solver? [closed]
Sorry if this is a stupid question. I was wondering what the difference is between Mathematica NonlinearModelFit and Excel solver if you set up excel to minimize the sum of squared residuals. I've ...
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NonlinearModelFit finds only "fake" minima
I'm trying to fit the parameters of a function that, since it's the result of many complicated calculations, cannot be expressed analytically, but only calculated.
Let me write it as
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Fitting many peaks to dataset
I have the following dataset:
dataset
I am trying to fit this with a series of gaussians, without overfitting. I have tried the following,
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Fitting data to a nonlinear model and avoiding warning
I have a complicated model and I want to fit it to my data.
I used NonlinearModelFit. The fit quality is very poor (P is infinitesimal) and it comes with a warning ...
CommunityBot
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Fitting experimental data with a convolution of two functions - how to speed up such calculations?
I am trying to write a program that fits experimental data with a convolution of experimental instrumental response function (IRF) with several Exponential functions. This is what I coded so far.
Here ...
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Find Fit function to my plot
I want to solve this equation and find Z.
But solving this equation is difficult due to the complexity of its functions. So, I used a numerical method and managed to plot Z as a function of changes ...
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