Questions tagged [discretization]

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Value non-linearity criterion in paper “Variable Resolution Discretization in Optimal Control”

I have been reading the paper "Variable Resolution Discretization in Optimal Control" (available here or here), and am having trouble understanding how the value non-linearity criterion (Section 6.2) ...
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35 views

Weighing toilet paper with an imprecise scale

A practical, topical problem: Consider a typical roll of toilet paper (TP) with perforated sheets of fairly uniform size, and suppose we're interested in the distribution of a sheet's weight $W$ but ...
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Can isotonic regression be used as a discretisation scheme?

Working on two different projects, one involving isotonic regression, the other being about discretising continuous variables. I was wondering if there is a link between isotonic regression and ...
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68 views

Categorical encoding after discretization

When a variable is discretized it is converted to a categorical variable. This new variable should be encoded back to numeric using label encoding or one hot encoding. I mean, sklearn by default (...
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Order of discretization and variable selection

I want to test the effects of discretization in a dataset. The problem is that it has too many variables, so I have to do feature selection. My question is if I should do feature selection before or ...
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34 views

When to use equal frequency binning and when equal width binning?

When transforming numerical variables into categorical variables I'm not aware of when should I use equal frequency binning and when equal width binning. Seems that each of them has their own ...
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2answers
210 views

A data-independant transformation to discretize a range of values non-uniformly

I am sure this is trivial, but I am looking for a transformation that nonuniformly discretizes all values of a range into several bins. The bins should be variant and I'd like them to be smaller ...
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45 views

Best way to split real valued imbalanced distribution into finite number of classes

What I'm trying to do is adapting this research paper to another problem. In short: the authors split price variations of S&P500 index into four different classes. Then they train a Random Forest ...