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How are feature_importances in RandomForestClassifier determined?

......). It is sometimes called "gini importance" or "mean decrease impurity" and is defined as the total decrease in node impurity (weighted by the probability of reaching that node (which is approximated by the proportion of samples reaching that node)) averaged over all trees of the ensemble. In th...
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Do subclasses inherit private fields?

... Probably not. But the JLS establishes the definition for the Java world, and it does so (in this case) unambiguously. EDITED (removed a parallel quote from Bjarne Stroustrup which due to the differences between java and c++ probably only add to the confusion. I'll let my answer rest on the JLS :...
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How to terminate a python subprocess launched with shell=True

I'm launching a subprocess with the following command: 12 Answers 12 ...
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Fancybox doesn't work with jQuery v1.9.0 [ f.browser is undefined / Cannot read property 'msie' ]

...ox is patched. UPDATE (Jan 16, 2013): Fancybox v2.1.4 has been released and now it works fine with jQuery v1.9.0. For fancybox v1.3.4- you still need to rollback to jQuery v1.8.3 or apply the migration script as pointed out by @Manu's answer. UPDATE (Jan 17, 2013): Workaround for users of Fa...
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What's the point of the X-Requested-With header?

JQuery and other frameworks add the following header: 3 Answers 3 ...
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Calculating moving average

... R not containing future values of given timestamp? I checked forecast::ma and it contains all neighbourhood, not right. – hhh Sep 7 '18 at 20:52 ...
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Typing Enter/Return key using Python and Selenium?

I'm looking for a quick way to type and Enter or Return key in Selenium. Unfortunately the form I'm trying to test (not my own code so I can't modify) doesn't have a Submit button. When working with it manually, I just type ENTER or RETURN . I need to know how to do that with the Selenium type ...
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Linq code to select one item

...ion methods directly like: var item = Items.First(i => i.Id == 123); And if you don't want to throw an error if the list is empty, use FirstOrDefault which returns the default value for the element type (null for reference types): var item = Items.FirstOrDefault(i => i.Id == 123); if (ite...
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Why is isNaN(null) == false in JS?

...pts to convert the passed parameter to a number1 (equivalent to Number(x)) and then tests if the value is NaN. If the parameter can't be converted to a number, Number(x) will return NaN2. Therefore, if the conversion of parameter x to a number results in NaN, it returns true; otherwise, it returns f...
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Find number of months between two Dates in Ruby on Rails

...is solution does not consider days. The number of months between 28/4/2000 and 1/5/2000 is not 1 month, but 0. – dgilperez Aug 19 '13 at 18:39 15 ...