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How are feature_importances in RandomForestClassifier determined?

I have a classification task with a time-series as the data input, where each attribute (n=23) represents a specific point in time. Besides the absolute classification result I would like to find out, which attributes/dates contribute to the result to what extent. Therefore I am just using the feat...
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How do I specify “close existing connections” in sql script

... I've used this but often wondered if there was a window of opportunity for another user to get in as the "single user" - is that possible? Possible alternative is ALTER DATABASE [MyDatabaseName] SET OFFLINE WITH ROLLBACK IMMEDIATE – Kri...
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Why use symbols as hash keys in Ruby?

...ring you mention throughout your source code in it's separate entity, e.g. if you have a string "name" multiple times mentioned in your source code, Ruby needs to store these all in separate String objects, because they might change later on (that's the nature of a Ruby string). If you use a string...
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How do you clear Apache Maven's cache?

...alls on our projects using Windows Vista or Windows 7 sometimes produce artifacts with the same data as a previous build even though the newer artifact's files should have been updated. ...
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In a Bash script, how can I exit the entire script if a certain condition occurs?

...script in Bash to test some code. However, it seems silly to run the tests if compiling the code fails in the first place, in which case I'll just abort the tests. ...
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How to get WordPress post featured image URL

... Check the code below and let me know if it works for you. <?php if (has_post_thumbnail( $post->ID ) ): ?> <?php $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' ); ?> <div id="custom-bg" ...
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How is std::function implemented?

... The implementation of std::function can differ from one implementation to another, but the core idea is that it uses type-erasure. While there are multiple ways of doing it, you can imagine a trivial (not optimal) solution could be like this (simplified for the spec...
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How to find out which view is focused?

I need to find out if any view is focused inside an Activity and what view it is. How to do this? 6 Answers ...
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What is the JSF resource library for and how should it be used?

...ike Mojarra and MyFaces and JSF component libraries like PrimeFaces and OmniFaces use it. No one of them use resource libraries this way. They use it (under the covers, by @ResourceDependency or UIViewRoot#addComponentResource()) the following way: <h:outputScript library="javax.faces" name="jsf...
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With MySQL, how can I generate a column containing the record index in a table?

...but you'd normally use it to reference attributes of the derived table, as if it was a real table. – Daniel Vassallo Feb 27 '12 at 23:05 20 ...