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Why does one hot encoding improve machine learning performance?

...e. The three possible values of w×x are 0, w and 2×w. Either these three all lead to the same decision (they're all < b or ≥b) or "UK" and "French" lead to the same decision, or "French" and "US" give the same decision. There's no possibility for the model to learn that "UK" and "US" should b...
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C++ - passing references to std::shared_ptr or boost::shared_ptr

...now that sp->do_something() will not blow up due to a null pointer? It all depends what is in those '...' sections of the code. What if you call something during the first '...' that has the side-effect (somewhere in another part of the code) of clearing a shared_ptr to that same object? And wha...
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How to use OrderBy with findAll in Spring Data

...y<StudentEntity, Integer> { public List<StudentEntity> findAllByOrderByIdAsc(); } The code above should work. I'm using something similar: public List<Pilot> findTop10ByOrderByLevelDesc(); It returns 10 rows with the highest level. IMPORTANT: Since I've been told that it'...
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How do I byte-compile everything in my .emacs.d directory?

...rt of provides better defaults and some nice customizations to default install of Emacs. 6 Answers ...
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Why do I get a warning icon when I add a reference to an MEF plugin project?

... Studio 2017 with update 15.3 has still not addressed the issue of not actually showing a meaningful message. Very annoying. – Greg R Taylor Sep 12 '17 at 11:38 4 ...
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What are the underlying data structures used for Redis?

...s internals you should not care about how data types are implemented internally. This is for a simple reason: for every Redis operation you'll find the time complexity in the documentation and, if you have the set of operations and the time complexity, the only other thing you need is some clue abou...
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Cannot push to Heroku because key fingerprint

... I followed this post and others of the same kind without success :-(( Finally, I found the solution: I had to add my new rsa identity in my machine! So, first of all I created a new rsa key: ssh-keygen -t rsa -C "giordano.scalzo[at]gmail.com" -f ~/.ssh/id_rsa_heroku then added it to my machin...
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Why isn't there a Guid.IsNullOrEmpty() method

...why Guid in .NET does not have IsNullOrEmpty() method (where empty means all zeros) 6 Answers ...
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Disable VS' “downloading public symbols”

...ymbols option page Tools → Options Go To Debugging → Symbols Uncheck all of the listed symbol file locations Also you may want to disable "Enable .net framework source stepping" in Tools → Options → Debugging settings. ...
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SVN- How to commit multiple files in a single shot

...yfile1.h $ svn changelist my-changelist mydir/dir3/myfile3.c etc. ... (add all the files you want to commit together at your own rate) $ svn commit -m"log msg" --changelist my-changelist share | im...