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Feeds
Crossvalidation of Classification Trees?
I recommend that you look at the following example from the file exchange http://www.mathworks.com/matlabcentral/fileexchange...
quasi 12 anni fa | 0
linear regression
Alternatively, if you have the 12a version of Statistics Tbx X = [1,2,3,4,5,6,7,8,9]; Y = [4 5 6 9 8 7 4 1 2]; my...
quasi 12 anni fa | 1
How to apply Random walks ?
MATLAB includes a wide variety of functions that can be used to simulate a random walk. Depending on what precisely you want to...
quasi 12 anni fa | 1
What is a reasonable lower time limit for regstats?
MATLAB and Statistics Toolbox provide a variety of ways to perform a regression. For example, if I am performing a simple linea...
quasi 12 anni fa | 1
Parametric bootstraping in curve fitting
In general when I hear the expression parametric bootstrap I think "parametric residual bootstrap" I'm attaching some simple ...
quasi 12 anni fa | 1
| accettato
How do I Regression Fit a SinWave to a dataset?
Here's some simple code that illustrates how to perform nonlinear regression using the 12a release of Statistics Toolbox. Not...
quasi 12 anni fa | 1
Homework help.
Couple quick questions / comments 1. are you sure you typed in the model correctly? This looks very close to a Gompertz fun...
quasi 12 anni fa | 0
Curve fitting f(x,y) result
I'm attaching code that shows a couple different ways to solve your problem. I prefer the second option. The R^2 is slightly...
circa 12 anni fa | 1
Curve fitting f(x,y) result
Hi ZazOufUMl A "Poly31" model is different than the one that I suggested. (Poly31 will contain a number of cross terms). ...
circa 12 anni fa | 0
Curve fitting f(x,y) result
Hi there The "Poly54" fit type is specifying a 5th order polynomial in one direction and a 4th order polynomial in the other....
circa 12 anni fa | 0
Matlab - How to Generate Random Numbers from a Specific Probability Density
If Pv and Pa can both be described as functions of a, you might be able to use a univariate generator to generate plausible valu...
circa 12 anni fa | 0
Multicolinearity/Regression/PCA and choice of optimal model (2nd try)
I'm attaching some code that might provide helpful I also have a two part blog posting on this same subject that provides a b...
circa 12 anni fa | 0
| accettato
The problem of using rng to generate random numbers.
From the sounds of things, the simplest thing to do would be to generate all of your random numbers OUTSIDE your loop. Start ...
circa 12 anni fa | 0
The problem of using rng to generate random numbers.
It's hard to make a specific recommendation without known more about the use case. What (specifically) are you trying to acco...
circa 12 anni fa | 0
classifier
I did a webinar a couple years titled: "Computational Statistics: An Introduction to Classification with MATLAB". You can ...
circa 12 anni fa | 0
Surface Fitting Tool Coefficient Structure
Local regression (aka LOWESS/LOESS) and interpolation don't lend themselves to parametric representations. There really isn't a...
circa 12 anni fa | 0
| accettato
Curve smoothing using Matlab
I have a function called FitIt on the file exchange that might prove useful. FitIt combines Local regression (to smooth yo...
circa 12 anni fa | 0
Get Y values from Curve Fitting Tool
For simplicity, this code is using a simple linear model. However, the same syntax with work for your nonlinear regression. ...
circa 12 anni fa | 8
| accettato
Least squares linear regression when squares have to do with elasticity?
Here's a simple example using the new regression functions in the 12a release. All you need to do is pass the appropriate weigh...
circa 12 anni fa | 1
Multi-parametric fit with matlab
Hi Miguel fitensemble is able to handle multiple independent variables. You should be able to use this with the data set tha...
circa 12 anni fa | 0
| accettato
Multi-parametric fit with matlab
Hi Miguel From the sounds of things, your central problem is that you're unable to specify an equation that describes the rel...
circa 12 anni fa | 0
Classifiers. How can i draw 3-D plot ?
I have a webinar entitled An Introduction to Classification with MATLAB. The code is available for download from the file exc...
circa 12 anni fa | 0
How to merge two similar functions into a same function? any mathematical modeling method or tool box?
Hi Qian Implicitly, you seem to be suggesting that there is a single model that describes both of these sets of data. Rather...
circa 12 anni fa | 0
Classifiers. How can i draw 3-D plot ?
The SVM implementation in Bioinformatics Toolbox is limited to binary classification. The Naive Bayes classifier in Statistic...
circa 12 anni fa | 1
How to obtain Std of Coefficients from Curve Fitting
Hi George Conveniently, 12a also has a function call NonLinearModel %% Generate some data X = 2* pi*rand(100,1); ...
circa 12 anni fa | 0
| accettato
How to obtain Std of Coefficients from Curve Fitting
The 12a release of Statistics Toolbox has some very nice new capabilities for regression analysis. %% Generate some data ...
circa 12 anni fa | 1
how do I determine the probability distribution of data?
Sorry if this sounds like a silly question: Is there an absolute requirement that you describe your data using a parametric d...
circa 12 anni fa | 0
How to get regression statistics for several run with different data sets?
Hey there The following code assumes that you have the 12a release of Statistics Toolbox. (In other words, I am using the ne...
circa 12 anni fa | 0
Need help in getting a polynomial to go through 0,0
I'm attaching code that illustrates how to solve the problem using either Statistics Toolbox or base MATLAB. The Statistic ...
circa 12 anni fa | 0
Matlab 2012a
Statistics Toolbox includes a lot of impressive new functionality for regression analysis. I'm attach code for a blog post th...
circa 12 anni fa | 0
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