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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
...for how to best divide data into training and validation sets? Is an even 50/50 split advisable? Or are there clear advantages of having more training data relative to validation data (or vice versa)? Or is this choice pretty much application dependent?
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Numpy array dimensions
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answered Jun 17 '10 at 12:59
Felix KlingFelix Kling
666k151151 gold badges968968 silver badges10321032 bronze badges
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py2exe - generate single executable file
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106
PyInstaller will create a single .exe file with no dependencies; use the --onefile option. It d...
Simple way to calculate median with MySQL
...um+1 as `row_number`, @total_rows:=@rownum
FROM data d, (SELECT @rownum:=0) r
WHERE d.val is NOT NULL
-- put some where clause here
ORDER BY d.val
) as dd
WHERE dd.row_number IN ( FLOOR((@total_rows+1)/2), FLOOR((@total_rows+2)/2) );
Steve Cohen points out, that after the first pass, @rown...
Get HTML5 localStorage keys
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in ES2017 you can use:
Object.entries(localStorage)
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How to get the absolute coordinates of a view
...as they all seem to be relative to the parent of the view, thus giving me 0 . What is the proper way to do this?
11 Answer...
地图组件（高德地图） · App Inventor 2 中文网
...应一个特定的URL。
默认高德地图简图模式：https://wprd01.is.autonavi.com/appmaptile?x={x}&y={y}&z={z}&style=7
可调整地图样式，变量说明如下：
域名前缀(wprd,webst)：效果一样，目前还没有找出规律。01 ~ 04 随意都可以，负载均衡用。
lang...
C++ display stack trace on exception
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answered Mar 27 '09 at 22:55
Andrew GrantAndrew Grant
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Is there a function that returns the current class/method name? [duplicate]
...e.Name;
– James Furey
Oct 17 '12 at 0:44
1
What do to with respect to the "Possible System.NullRe...
How to get process ID of background process?
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605
You need to save the PID of the background process at the time you start it:
foo &
FOO_PID...