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How to articulate the difference between asynchronous and parallel programming?
...am going to quote from Probabilistic models for concurrency of Daniele Varacca which is a good set of notes for theory of concurrency:
A model of computation is a model for concurrency when it is able to represent systems as composed of independent autonomous components, possibly communicating w...
How are feature_importances in RandomForestClassifier determined?
..., you can also find feature importances implemented as the "mean decrease accuracy". Basically, the idea is to measure the decrease in accuracy on OOB data when you randomly permute the values for that feature. If the decrease is low, then the feature is not important, and vice-versa.
(Note that b...
jQuery Ajax File Upload
...ling, false);
}
return myXhr;
},
success: function (data) {
// your callback here
},
error: function (error) {
// handle error
},
async: true,
data: formData,
cache: false,
content...
usr/bin/ld: cannot find -l
...
Thanks, this was helpful. For others using gcc to compile and link their program (rather than using ld directly), you can add -Xlinker --verbose to gcc's command-line arguments to have it pass this option to ld.
– user473305
Feb 1...
Reset other branch to current without a checkout
...ay to do this is git push . current:other. This works without refs/heads (/cc @elliottcable), and it also prevents you from updating the checked-out branch. Note that you may need to pass -f (or use +current:other) if the update isn't a fast-forward.
– Lily Ballard
...
What is the difference between Ruby 1.8 and Ruby 1.9
...n):001:0> ?c
=> 99
String index.
Ruby 1.9
irb(main):001:0> "cat"[1]
=> "a"
Ruby 1.8.6
irb(main):001:0> "cat"[1]
=> 97
{"a","b"} No Longer Supported
Ruby 1.9
irb(main):002:0> {1,2}
SyntaxError: (irb):2: syntax error, unexpected ',', expecting tASSOC
Ruby 1.8.6
i...
Creating email templates with Django
...in your templates directory under email.txt:
Hello {{ username }} - your account is activated.
and an HTMLy one, stored under email.html:
Hello <strong>{{ username }}</strong> - your account is activated.
You can then send an e-mail using both those templates by making use of get_t...
UI Design Pattern for Windows Forms (like MVVM for WPF)
...SDN article by the same author at http://msdn.microsoft.com/en-us/magazine/cc188690.aspx
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Conda: Installing / upgrading directly from github
...s://github.com/pythonforfacebook/facebook-sdk.git@8c0d34291aaafec00e02eaa71cc2a242790a0fcc#egg=facebook_sdk-master"
It's still calling pip under the covers, but you can now unify your conda and pip package specifications in a single environment.yml file.
If you wanted to update your root environm...
Reading GHC Core
... Marlow, 1999. Core is described in Section 2.3, including details on the occurrence analysis annotations.
A transformation-based optimiser for Haskell, Peyton Jones and Santos, 1998. Core is described in S3, including a discussion of polymorphism and operational readings of Core.
Related material...