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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
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229
There are two competing concerns: with less training data, your parameter estimates have great...
Two way/reverse map [duplicate]
..."Returns the number of connections"""
return dict.__len__(self) // 2
And it works like so:
>>> d = TwoWayDict()
>>> d['foo'] = 'bar'
>>> d['foo']
'bar'
>>> d['bar']
'foo'
>>> len(d)
1
>>> del d['foo']
>>> d['bar']
Traceback (m...
What do the following phrases mean in C++: zero-, default- and value-initialization?
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2 Answers
2
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Import SQL file into mysql
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chanchal118
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answered Sep 28 '12 at 23:01
d-_-bd-_-b
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Calculate the date yesterday in JavaScript
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var date = new Date();
date ; //# => Fri Apr 01 2011 11:14:50 GMT+0200 (CEST)
date.setDate(date.getDate() - 1);
date ; //# => Thu Mar 31 2011 11:14:50 GMT+0200 (CEST)
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How exactly to use Notification.Builder
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edited Aug 13 '16 at 9:02
Billal Begueradj
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a...
Insert auto increment primary key to existing table
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261
An ALTER TABLE statement adding the PRIMARY KEY column works correctly in my testing:
ALTER T...
How exactly does work?
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52
UPDATED: 2/19/2016
Consider this answer outdated. Refer to other answers on this post for infor...
string.ToLower() and string.ToLowerInvariant()
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edited May 23 '17 at 11:54
Community♦
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answered Nov 4 '13 at 22:05
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Regex expressions in Java, \\s vs. \\s+
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answered Mar 25 '13 at 22:02
Óscar LópezÓscar López
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