# All Questions

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64 views

### Confusion about Predict Model NameAge

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

### CDF of probability from a ClassifierFunction

I have a classifier function that classifies whether a student is likely to succeed in a course given their score on a placement test. From this, I am pulling both the probability of being successful ...
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 ...
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 ...
85 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 ...
97 views

### ClassificationMeasurements without the Classifier

I only have classifications (a list of inputs and outputs), but not a ClassifierFunction, how can I still use ...
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 ...
269 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 ...
106 views

### Cross-entropy calculation

This is a really dumb question, but here goes: is there a way to compute cross-entropy of two probability distributions? There is CrossEntropyLayer[], so ...
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). ...
859 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}...
1k views

### How to do Independent Component Analysis?

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