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Why does one hot encoding improve machine learning performance?
..." and "US" should be given the same label, with "French" the odd one out.
By one-hot encoding, you effectively blow up the feature space to three features, which will each get their own weights, so the decision function is now w[UK]x[UK] + w[FR]x[FR] + w[US]x[US] < b, where all the x's are boole...
What does “Document-oriented” vs. Key-Value mean when talking about MongoDB vs Cassandra?
...y what the name suggests: it's a storage system that stores values indexed by a key. You're limited to query by key and the values are opaque, the store doesn't know anything about them. This allows very fast read and write operations (a simple disk access) and I see this model as a kind of non vola...
How do I strip non alphanumeric characters from a string and keep spaces?
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A better answer (at least in ruby) is:
@search_query.gsub!(/^(\w|\s*)/,'')
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Difference between solr and lucene
...ent approach?
4) Lucene doesn't just create the Index for the consumption by Solr. Lucene handles all the search related operations. Any application can use the Lucene framework.
Examples are Solr, Elastic Search, LinkedIn (yes, under the hood), etc..
Check out this article: Lucene vs Solr
UPDA...
What does 'require: false' in Gemfile mean?
... = slower, according to confreaks.com/videos/2668-gogaruco2013-measuring-ruby
– Nathan Long
Oct 12 '13 at 14:11
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Send an Array with an HTTP Get
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This doesn’t generalise. The brackets is a Ruby on Rails marshalling convention to encode nested structure into an otherwise flat sequence. Zope (Python framework) used a different scheme for the same use case. These schemes have mostly been obsoleted by AJAX and JSON. ...
How do I flag a method as deprecated in Objective-C 2.0?
...formerWithModelClass:(Class)modelClass __attribute__((deprecated("Replaced by +mtl_JSONDictionaryTransformerWithModelClass:")));
+ (NSValueTransformer *)mtl_externalRepresentationArrayTransformerWithModelClass:(Class)modelClass __attribute__((deprecated("Replaced by +mtl_JSONArrayTransformerWithMode...
“unadd” a file to svn before commit
... This answer is dangerously incorrect - it will unstage your changes BY REMOVING YOUR LOCAL COPIES OF THE FILES. Brian Lacy's answer below is much better.
– Henry Henrinson
May 19 '16 at 12:04
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Vagrant reverse port forwarding?
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In the book Vagrant: Up and Running (Pub. date: June 12, 2013), written by the creator of Vagrant, he mentioned that it is not possible for guest machine to access services running on the host machine.
Instead of using Forwarded Ports, you could set up a private network using Host-Only Networks...
Basic HTTP and Bearer Token Authentication
...his way Authorization: Basic Ym9zY236Ym9zY28=, Bearer mytoken123 separated by comma. So, I though I should suggest you alternates.
– Sabuj Hassan
Mar 25 '14 at 17:44
add a com...