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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?

Is there a rule-of-thumb 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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Register Application class in Manifest?

I have one Application class to keep the global state of my application. But I'm unable to register it in Manifest file? Any idea how to do this? ...
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Git: show more context when using git add -i or git add -e?

I'm selectively committing parts of a large file and I'd like to see more context around each hunk. Is this possible? 2 Ans...
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Android, How can I Convert String to Date?

I store current time in database each time application starts by user. 6 Answers 6 ...
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How to use shell commands in Makefile

I'm trying to use the result of ls in other commands (e.g. echo, rsync): 2 Answers 2...
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How to change the foreign key referential action? (behavior)

I have set up a table that contains a column with a foreign key, set to ON DELETE CASCADE (delete child when parent is deleted) ...
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error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in m

I have read a lot of solutions to my problem but none helped. I tried clean, rebuild. Reinstalled visual 2010 and change from professional to ultimate. But still I dont know why I have this error. My project look like this: 1 Exe Solution to test my static library. 1 Dll Solution static library. Co...
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How to reset Android Studio

I want to reset Android Studio 0.2.13 to the default state. That means reset all settings, remove all projects, all gradle files so that it would act like a fresh installation. What steps do I have to follow to achieve this? ...
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Logger slf4j advantages of formatting with {} instead of string concatenation

Is there any advantage of using {} instead of string concatenation? 5 Answers 5 ...
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Difference between window.location.assign() and window.location.replace()

What is the difference between window.location.assign() and window.location.replace() , when both redirect to a new page? ...