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# All Questions

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405 views

### Rapid density estimation and rendering of decision regions

I would like to create an interactive demonstration using Manipulate[] that illustrates a fundamental concept in pattern classification and machine learning. This ...
1k views

### How to do Independent Component Analysis?

The new experimental function in 10.3.1 DimensionReduce[], has the following three options for Method: ...
2k views

### Markov Random Field

I look for an efficient way to implement a Pairwise Markov Random Field. I have implemented a homogeneous (i.e., unary potential is a similar function in all nodes, and pairwise potential is a ...
195 views

### How to extract tree parameters from RandomForest?

I want to extract the parameters of a decision tree from the object estimated by Classify[]. It seems that parameters of the estimated Classifier are available in the "Models" property. It is ...
866 views

### How to perform convolutions on this complicated pdf?

For a known pdf f[x], I need to calculate integrals over the probability density of the sum of Log[f[x]] over independent samples: Q[t,n]\equiv P(\sum_{i=1}^{n}...
98 views

### ClassificationMeasurements without the Classifier

I only have classifications (a list of inputs and outputs), but not a ClassifierFunction, how can I still use ...
274 views

### Specifying mean and kernel function in Gaussian Process

As part of the Improved Machine Learning in Mathematica 11, Wolfram advertises the Method "GaussianProcess" which can be used with Predict[] to obtain smooth Gaussian random fields. The screenshot ...
71 views

### Classifier from Two Distributions

Maybe this is a noob question and maybe it should be on CrossValidated ... Suppose I have two classes {class1, class2} and have their two associated EmpiricalDistribution[]s, pdf1(x) and pdf2(x). ...
66 views

### Confusion about Predict Model NameAge

Predict["NameAge", "Claire"] 8 distribution = Predict["NameAge", "Claire", "Distribution"] dataRaw = distribution[[2]] <...
90 views

### Plotting a precision recall curve?

I would like to plot some PR curves for a few different applications: results on a test set for a (multilabel multiclass) classifier results on a test set for a CBIR function that returns ranked ...
56 views

### How does DimensionReduce work for EventData?

My question is whether the use of DimensionReduce, for a simple example with Method -> "PrincipalComponentsAnalysis" is the ...
348 views

### Uncorrected Versus Corrected Measures of StandardDeviation in PredictorMeasurements' “StandardDeviation”

When using Predict have noticed that the standard deviation of the residuals computed manually is not equal to the output from ...
103 views

### How to Sample from a Probability Density Function

I've done a pretty good job working my way through and understanding the various ways to calculate the differences between probability distributions through Kullback Leibler Divergence and was happy ...