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How to split/partition a dataset into training and test datasets for, e.g., cross validation?
...k of the indices:
import numpy
# x is your dataset
x = numpy.random.rand(100, 5)
numpy.random.shuffle(x)
training, test = x[:80,:], x[80:,:]
or
import numpy
# x is your dataset
x = numpy.random.rand(100, 5)
indices = numpy.random.permutation(x.shape[0])
training_idx, test_idx = indices[:80], ind...
Does MySQL foreign_key_checks affect the entire database?
..." for scope. This means it can be set for session:
SET FOREIGN_KEY_CHECKS=0;
or globally:
SET GLOBAL FOREIGN_KEY_CHECKS=0;
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String replacement in Objective-C
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edited Mar 20 '09 at 22:45
answered Mar 20 '09 at 22:39
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Encoding Javascript Object to Json string
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Dave WardDave Ward
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Calendar.getInstance(TimeZone.getTimeZone(“UTC”)) is not returning UTC time
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answered Jan 25 '14 at 10:49
mockinterfacemockinterface
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How to combine multiple conditions to subset a data-frame using “OR”?
... it is to be handled as I intended, since ...
> NA & 1
[1] NA
> 0 & NA
[1] FALSE
Order of arguments may matter when using '&".
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How to match all occurrences of a regex
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Andrew Marshall
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answered Sep 17 '08 at 5:53
JeanJean
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Repeatedly run a shell command until it fails?
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edited Nov 8 '19 at 0:10
Gurpreet Atwal
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answered Oct 19 '12 at 4:09
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How do I view events fired on an element in Chrome DevTools?
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edited Dec 11 '12 at 20:35
Charlie
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Return positions of a regex match() in Javascript?
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answered Feb 19 '10 at 10:49
GumboGumbo
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