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Standardize data columns in R
I have a dataset called spam which contains 58 columns and approximately 3500 rows of data related to spam messages.
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Redis strings vs Redis hashes to represent JSON: efficiency?
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How do I search within an array of hashes by hash values in ruby?
...lect (also called find_all):
@fathers.select {|father| father["age"] > 35 }
# => [ { "age" => 40, "father" => "Bob" },
# { "age" => 50, "father" => "Batman" } ]
Per the documentation, it "returns an array containing all elements of [the enumerable, in this case @fathers] fo...
How to get jQuery to wait until an effect is finished?
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answered Jun 30 '09 at 20:16
Paolo BergantinoPaolo Bergantino
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Toggle input disabled attribute using jQuery
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answered Feb 28 '12 at 20:43
ArneArne
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Naming conventions for abstract classes
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edited Sep 13 '16 at 20:14
user2864740
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DialogFragment setCancelable property not working
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answered May 10 '13 at 10:46
BlackbeltBlackbelt
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What is the difference between a dialog being dismissed or canceled in Android?
...wered Dec 6 '10 at 16:09
hotshot309hotshot309
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The “backspace” escape character '\b': unexpected behavior?
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T.J. CrowderT.J. Crowder
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Normalize data in pandas
... df
Out[92]:
a b c d
A -0.488816 0.863769 4.325608 -4.721202
B -11.937097 2.993993 -12.916784 -1.086236
C -5.569493 4.672679 -2.168464 -9.315900
D 8.892368 0.932785 4.535396 0.598124
In [93]: df_norm = (df - df.mean()) / (df.max() - df.min())
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