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Nearest neighbors in high-dimensional data?

I have asked a question a few days back on how to find the nearest neighbors for a given vector. My vector is now 21 dimensions and before I proceed further, because I am not from the domain of Machine Learning nor Math, I am beginning to ask myself some fundamental questions: ...
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How to set NODE_ENV to production/development in OS X

For use in express.js environments. Any suggestions? 14 Answers 14 ...
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In Python, how do I indicate I'm overriding a method?

In Java, for example, the @Override annotation not only provides compile-time checking of an override but makes for excellent self-documenting code. ...
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In Python, how do I iterate over a dictionary in sorted key order?

There's an existing function that ends in the following, where d is a dictionary: 10 Answers ...
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How can I get “Copy to Output Directory” to work with Unit Tests?

...to a TestResults folder and then the tests are executed. The issue I'm having is that not all the files in the Debug/bin directory are copied to the TestResults project. ...
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How to initialize private static members in C++?

What is the best way to initialize a private, static data member in C++? I tried this in my header file, but it gives me weird linker errors: ...
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Is there a reason for C#'s reuse of the variable in a foreach?

When using lambda expressions or anonymous methods in C#, we have to be wary of the access to modified closure pitfall. For example: ...
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What do “branch”, “tag” and “trunk” mean in Subversion repositories?

...d Subversion (and I guess general repository) discussions. I have been using SVN for my projects for the last few years, but I've never grasped the complete concept of these directories. ...
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How do you maintain development code and production code? [closed]

What are the best practices and rules-of-thumb to follow while maintaining code? Is it good practice to have only the production ready code in the development branch, or should untested latest code be available in the development branch? ...
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Cartesian product of x and y array points into single array of 2D points

I have two numpy arrays that define the x and y axes of a grid. For example: 13 Answers ...