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Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
...ance( X, Y ) = 1 - X . Y = Euclidean distance |X - Y|^2 / 2
is fast. For bit vectors, keep the norms separately from the vectors
instead of expanding out to floats
(although some programs may expand for you).
For sparse vectors, say 1 % of N, X . Y should take time O( 2 % N ),
space O(N); but I do...
How to concatenate two MP4 files using FFmpeg?
...t sample rates (e.g. 44,100 Hz and 48,000 Hz)? Or are they using different bit rates (e.g. 128 kbps and 64 kbps)? In either such case, I don't quite understand how the command -c copy (a stream-copy instruction) would modify the source files to make them compatible.
– Ed999
...
Specify JDK for Maven to use
... |
edited May 7 at 10:15
Sergey Brunov
11.4k77 gold badges3535 silver badges6969 bronze badges
an...
jQuery UI Dialog - missing close icon
...
This worked fairly well. The X was a little bit further left than normal though...not sure exactly why.
– ashlar64
Jan 24 '17 at 23:40
...
fastest MD5 Implementation in JavaScript
...ode. It doesn't have Base64 o/p but it does have raw o/p (i.e. array of 32-bit int insead of string).
JQuery MD5 plugin: Very simple down to earth but doesn't seem to have raw mode.
JavaScript-MD5: Not as fancy or fast as Spark but simpler.
Example from CryptoJS:
//just include md5.js from the Cr...
Secret copy to clipboard JavaScript function in Chrome and Firefox?
...so seems to work in the JavaScript console, after playing around with it a bit:
clear()
profile()
Running these in the Chrome console reveals the source behind these functions in the Webkit console:
> profile
function ()
{
return console.profile.apply(console, arguments)
}
> clear
f...
How to determine the memory footprint (size) of a variable?
...re usage before and after to get the usage of a single variable. This is a bit hacky, but it should work.
$start_memory = memory_get_usage();
$foo = "Some variable";
echo memory_get_usage() - $start_memory;
Note that this is in no way a reliable method, you can't be sure that nothing else touches...
C# Float expression: strange behavior when casting the result float to int
I have the following simple code :
7 Answers
7
...
How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
...esting using rvm upgrade. I know that rvm gives you the option, but it's a bit of a dangerous one.
IMO, the safer and more "rvm way" is to first rvm install the new ruby version, then use the rvm gemset copy command to copy your gemset(s) to the new ruby version, e.g. rvm gemset copy 1.9.2-p0@some-...
Wait until a process ends
...ore years later...) Note that setting Process.EnableRaisingEvents throws a Win32Exception (Access Denied) (as does HasExited) if the target process is elevated. (At least it still does as of .NET Framework 4.8.)
– skst
Aug 28 at 23:18
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