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How are feature_importances in RandomForestClassifier determined?
...erence below.
[1] L. Breiman, and A. Cutler, “Random Forests”, http://www.stat.berkeley.edu/~breiman/RandomForests/cc_home.htm
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How to fluently build JSON in Java?
... Crockford is the guy who invented JSON; his Java library is here:
http://www.json.org/java/
It sounds like the folks at json-lib picked up where Crockford left off. Both fully support JSON, both use (compatible, as far as I can tell) JSONObject, JSONArray and JSONFunction constructs.
'Hope tha...
Unable to load DLL 'SQLite.Interop.dll'
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Agreed. I'm using the 'Sqlite.Net PCL' package but found I also needed 'System.Data.SQLite Core (x86/x64)'. I also had to change the project(s) referencing it to use a Platform target of 'x86' or 'x64', rather than 'Any CPU'.
– Andre...
How to make a Bootstrap accordion collapse when clicking the header div?
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@minovsky How about this updated JSFiddle: jsfiddle.net/Tcgyx/60 ? Unfortunately I don't have an iPhone to test. I'll update my answer if this works.
– grim
Mar 20 '14 at 14:50
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surface plots in matplotlib
...o get 2d x,y mesh out of 1d x and y values.
http://matplotlib.sourceforge.net/mpl_examples/mplot3d/surface3d_demo.py
here's pythonic way to convert your 3-tuples to 3 1d arrays.
data = [(1,2,3), (10,20,30), (11, 22, 33), (110, 220, 330)]
X,Y,Z = zip(*data)
In [7]: X
Out[7]: (1, 10, 11, 110)
In [8...
How to get random value out of an array?
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PHP provides a function just for that: array_rand()
http://php.net/manual/en/function.array-rand.php
$ran = array(1,2,3,4);
$randomElement = $ran[array_rand($ran, 1)];
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How to disable a particular checkstyle rule for a particular line of code?
...ut the use of the supressionCommentFilter at http://checkstyle.sourceforge.net/config_filters.html#SuppressionCommentFilter. You'll need to add the module to your checkstyle.xml
<module name="SuppressionCommentFilter"/>
and it's configurable. Thus you can add comments to your code to turn...
.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?
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This same conclusion was found here: shipilev.net/blog/2016/arrays-wisdom-ancients
– user167019
Feb 26 '16 at 23:06
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Most efficient way to concatenate strings?
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Rico Mariani, the .NET Performance guru, had an article on this very subject. It's not as simple as one might suspect. The basic advice is this:
If your pattern looks like:
x = f1(...) + f2(...) + f3(...) + f4(...)
that's one co...
How can I shuffle an array? [duplicate]
...bug. About once in every 15 runs I get an extra undefined column. jsfiddle.net/tomasswood/z8zm7
– Thomas Wood
Sep 28 '13 at 0:25
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