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How do I create test and train samples from one dataframe with pandas?
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I would just use numpy's randn:
In [11]: df = pd.DataFrame(np.random.randn(100, 2))
In [12]: msk = np.random.rand(len(df)) < 0.8
In [13]: train = df[msk]
In [14]: test = df[~msk]
And just to see this has worked:
In [15]: len(test)
Out[15]: 21
In [16]:...
How to make completely transparent navigation bar in iOS 7
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answered Oct 11 '13 at 16:41
AlanAlan
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source of historical stock data [closed]
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lukebuehlerlukebuehler
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Exception thrown inside catch block - will it be caught again?
...t. :-P
– Chris Jester-Young
Sep 15 '11 at 13:25
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@Chris Jester-Young for(;;); is shorter, contai...
Is there an SQLite equivalent to MySQL's DESCRIBE [table]?
...f the statement
– RTF
Aug 22 '13 at 11:18
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A semi-colon is not required
–...
Where does the @Transactional annotation belong?
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stackoverflow.com/questions/18498115/…
– Shahid Ghafoor
Aug 28 '13 at 21:06
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Any way to delete in vim without overwriting your last yank? [duplicate]
... register 'a'
– SergioAraujo
Dec 4 '11 at 12:19
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I find it useful to yank into the "p" register...
Difference between classification and clustering in data mining? [closed]
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edited Feb 21 '11 at 10:52
answered Feb 21 '11 at 10:44
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Is there a performance difference between CTE , Sub-Query, Temporary Table or Table Variable?
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Some Microsoft Research on possible future improvements in this area is in the publication "Efficient Exploitation of Similar Subexpression...
What is Data Transfer Object?
... or a class.
– Wix
Dec 10 '10 at 15:11
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@Wix, good point. I'd argue however that this is ok if i...