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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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What is “stdafx.h” used for in Visual Studio?

...afx.h is automatically generated when I start a project in Visual Studio 2010. I need to make a cross-platform C++ library, so I don't/can't use this header file. ...
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Recommended way to save uploaded files in a servlet application

... | edited Jun 20 at 9:12 Community♦ 111 silver badge answered Sep 6 '13 at 18:58 ...
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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...
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py2exe - generate single executable file

... 106 PyInstaller will create a single .exe file with no dependencies; use the --onefile option. It d...
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C++ display stack trace on exception

... answered Mar 27 '09 at 22:55 Andrew GrantAndrew Grant 55.8k2222 gold badges126126 silver badges139139 bronze badges ...
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When to use an object instance variable versus passing an argument to the method

... answered Dec 6 '08 at 10:45 TomTom 13k44 gold badges4545 silver badges6060 bronze badges ...
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Ruby custom error classes: inheritance of the message attribute

... StefanStefan 90.8k1010 gold badges116116 silver badges176176 bronze badges ...
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How to get process ID of background process?

... 605 You need to save the PID of the background process at the time you start it: foo & FOO_PID...
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What is the Scala identifier “implicitly”?

... 208 Here are a few reasons to use the delightfully simple method implicitly. To understand/trouble...