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如何选择机器学习算法 - 大数据 & AI - 清泛网 - 专注C++内核技术
...参数），最后选择在交叉验证中表现最好的。jmp0xf 译自Edwin Chen
How do you know what machine learning algorithm to choose for your classification problem? Of course, if you really care about accuracy, your best bet is to test out a couple different ones (making sure to try dif...
Best way to serialize an NSData into a hexadeximal string
...:) You are right on the lengthy, I was just trying to hit everywhere I can win microseconds! It divide the loop iterations by 2. But I admit it lacks elegance. Bye
– Moose
Nov 15 '17 at 19:10
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What happened to “Always refresh from server” in IE11 developer tools?
...ays Refresh from Server" button in the RTM version of IE11 that ships with Windows 8.1
It is found in the Network tab of the developer tools, 3rd button from the left.
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Solutions for INSERT OR UPDATE on SQL Server
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@CashCow, the last wins, this is what INSERT or UPDATE is supposed to do: the first one inserts, the second updates the record. Adding a lock allow this to happen in a very short time-frame, preventing an error.
– Jean Vin...
Inline code in org-mode
...isturbed by the "emphasis" term myself too, when looking for a feature allowing to hide org markup. Once you know the terminology, you immediately find org-hide-emphasis-markers, but I've searched for ages before finally finding it almost accidentally...
– François Févotte
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Does Python have a ternary conditional operator?
...ays evaluates everything, whereas the if/else construct only evaluates the winning expression.
– SilverbackNet
Feb 4 '11 at 2:25
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ruby inheritance vs mixins
...nd
end
class C
include A
include B
end
c = C.new
c.sayhi
Which one wins? In Ruby, it turns out the be the latter, module B, because you included it after module A. Now, it's easy to avoid this problem: make sure all of module A and module B's constants and methods are in unlikely namespace...
Key hash for Android-Facebook app
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This answer almost worked for me on Win7 x64. However, the resulting encoded cert was incorrect. Bryan Bedard's answer below will produce the correct cert value. I'm guessing the piping on windows is somehow the culprit.
– Walt Armour
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How do I set the default font size in Vim?
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I tried the following command in my .vimrc : set guifont=h18 || set guifont=Monospace:h18 || set guifont=18 and if some of them make the police bigger, there is a prblem : the space between each characters is very wide. Why ?
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How to delay the .keyup() handler until the user stops typing?
...earch field. Right now it searches for every keyup. So if someone types “Windows”, it will make a search with AJAX for every keyup: “W”, “Wi”, “Win”, “Wind”, “Windo”, “Window”, “Windows”.
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