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Label encoding across multiple columns in scikit-learn

... You can easily do this though, df.apply(LabelEncoder().fit_transform) EDIT2: In scikit-learn 0.20, the recommended way is OneHotEncoder().fit_transform(df) as the OneHotEncoder now supports string input. Applying OneHotEncoder only to certain columns is possible with the ColumnTransformer. ...
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How to use if statements in underscore.js templates?

... follow | edited Jan 29 '15 at 19:58 Stephen Fuhry 10.2k55 gold badges4646 silver badges5151 bronze badges ...
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How to display all methods of an object?

...efined by the browser and most likely enumerable by design. From ECMA-262 Edition 3: Global Object There is a unique global object (15.1), which is created before control enters any execution context. Initially the global object has the following properties: • Built-in obje...
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How do I test a file upload in rails?

... follow | edited Dec 8 '18 at 17:23 Jan Klimo 3,42911 gold badge2727 silver badges3737 bronze badges ...
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What does `someObject.new` do in Java?

... follow | edited Jul 17 '13 at 22:15 JayQuerie.com 16.1k1111 gold badges4747 silver badges6969 bronze badges ...
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Where does the .gitignore file belong?

... exclude patterns (your favorite “temporary file” naming pattern, your editor’s backup/temporary files, etc.). Accordingly, avoid putting “personal patterns” in tracked .gitignore file(s). – Chris Johnsen Apr 19 '11 at 4:01 ...
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What is the official “preferred” way to install pip and virtualenv systemwide?

...uctions: http://pip.readthedocs.org/en/latest/installing.html#install-pip EDIT 25-Jul-2013: Changed URL for setuptools install. EDIT 10-Feb-2014: Removed setuptools install (thanks @Ciantic) EDIT 26-Jun-2014: Updated URL again (thanks @LarsH) EDIT 1-Mar-2015: Pip is now bundled with Python ...
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How to reference a .css file on a razor view?

...yles/view_specific_style.css")" rel="stylesheet" type="text/css" /> } Edit: It's useful to know that the second parameter in @RenderSection, false, means that the section is not required on a view that uses this master page, and the view engine will blissfully ignore the fact that there is no "...
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Using 'return' in a Ruby block

... follow | edited Feb 24 '10 at 12:09 answered Feb 24 '10 at 11:55 ...
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'float' vs. 'double' precision

... follow | edited Dec 30 '14 at 20:59 answered Feb 23 '11 at 23:24 ...