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Principal component analysis in Python
...methods use the current value.
Methods:
The methods of class PCA transform vectors or arrays of e.g.
20 variables, 2 principal components and 1000 observations,
using partial matrices U' d' Vt', parts of the full U d Vt:
A ~ U' . d' . Vt' where e.g.
U' is 1000 x 2
d'...
How to handle AccessViolationException
...Exception and see if that lets you catch it.
**EDIT*
Here is some more information that might be useful (it's a long read).
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How do I fix the Visual Studio compile error, “mismatch between processor architecture”?
...|Configuration Manager menu item.
Find your project in the list, under Platform it will say "Any CPU"
Select the "Any CPU" option from the drop down and then select <New..>
From that dialog, select x86 from the "New Platform" drop down and make sure "Any CPU" is selected in the "Copy settings ...
_csv.Error: field larger than field limit (131072)
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What does “Document-oriented” vs. Key-Value mean when talking about MongoDB vs Cassandra?
... database extends the previous model and values are stored in a structured format (a document, hence the name) that the database can understand. For example, a document could be a blog post and the comments and the tags stored in a denormalized way. Since the data are transparent, the store can do m...
Android: What's the difference between Activity.runOnUiThread and View.post?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
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What is the X-REQUEST-ID http header?
... is generated (randomly) by the client it does not contain any sensitive information, and should thus not violate the user's privacy. As a unique ID is created per request it does also not help with tracking users.
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Generate a random date between two other dates
...M', '%m/%d/%Y %I:%M %p')
print(random_date(d1, d2))
output:
2008-12-04 01:50:17
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Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...alhost6 localhost6.localdomain6
172.16.110.100 dmjyrac1
172.16.110.101 dmjyrac1-vip
172.16.110.110 dmjyrac2
172.16.110.111 dmjyrac2-vip
172.16.110.102 dmjyrac-cluster dmjyrac-cluster-scan
10.10.120.100 dmjyrac1-priv
10.10.120.110 dmjyrac2-priv
172.16.110.120 ...
When are you truly forced to use UUID as part of the design?
...ID generator/parser for Ruby, so I consider myself to be reasonably well-informed on the subject. There are four major UUID versions:
Version 4 UUIDs are essentially just 16 bytes of randomness pulled from a cryptographically secure random number generator, with some bit-twiddling to identify the U...