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Closely correlated features may add variance to your model, and removing one of a correlated pair might help reduce that. There are lots of ways to detect correlation. Here's one: library(purrr) # in order to use keep() # select correlatable vars toCorrelate<-mtcars %>% keep(is.numeric) ...

By default all enum values are resolved to numbers. Let's say if you have something like enum MimeType { JPEG, PNG, PDF } the real value behind e.g. MimeType.PDF will be 2. But some of the time it is important to have the enum resolve to a different type. E.g. you receive the value fr...

Create groovy file by path $JENKINS_HOME/init.groovy.d/basic-security.groovy In Ubuntu 16 Jenkins home directory places in /var/lib/jenkins Place in file next code #!groovy import jenkins.model.* import hudson.security.* def instance = Jenkins.getInstance() def hudsonRealm = new...

Open Jenkins default config file and add in JAVA_ARGS next key -Djenkins.install.runSetupWizard=false In Ubuntu 16 default file places in /etc/default/jenkins Create groovy file by path $JENKINS_HOME/init.groovy.d/basic-security.groovy In Ubuntu 16 Jenkins home directory places in /var/li...

(This assumes MySQL has been installed and that sudo is being used.) Generating a CA and SSL keys Make sure OpenSSL and libraries are installed: apt-get -y install openssl apt-get -y install libssl-dev Next make and enter a directory for the SSL files: mkdir /home/ubuntu/mysqlcerts cd /home...

If you want to match a backslash in your regular expression, you'll have to escape it. Backslash is an escape character in regular expressions. You can use '\\' to refer to a single backslash in a regular expression. However, backslash is also an escape character in Java literal strings. To make a...

The update pattern in D3 version 3 A correct understanding of how the “enter”, “update” and “exit” selections work is fundamental for properly changing the dataviz using D3. Since D3 version 3 (actually, since version 2), this snippet could set the transitions for both “enter” and “update” selecti...

Use the ls() commands to find objects by name: freds = cmds.ls("fred") #finds all objects in the scene named exactly 'fred', ie [u'fred', u'|group1|fred'] Use * as a wildcard: freds = cmds.ls("fred*") # finds all objects whose name starts with 'fred' # [u'fred', u'freder...

Using canvas elements HTML provides the canvas element for building raster-based images. First build a canvas for holding image pixel information. var canvas = document.createElement('canvas'); canvas.width = 500; canvas.height = 250; Then select a context for the canvas, in this case two-di...

To add the BottomNavigationView follow these steps: Add in your build.gradle the dependency: compile 'com.android.support:design:25.1.0' Add the BottomNavigationView in your layout: <android.support.design.widget.BottomNavigationView xmlns:android="http://schemas.andro...

To externalise a distributed systems configuration Spring Cloud Config provides server and client-side support needed for externalising and centralising your configuration. To get started quickly you could use Spring Initializr to bootstrap your server. Add the Config Server dependency to automatic...

To get started quickly you could use Spring Initializr to bootstrap your client. Add the Config Client to automatically generate a project with the needed dependencies. Or you could add the dependency manually to an existing Spring Cloud application. <dependency> <groupId>org.spri...

Detailed instructions on getting lambda set up or installed.

Returns the ‘site_url’ option with the appropriate protocol (https://) <?php echo site_url(); ?> Output http://www.example.com

Detailed instructions on getting elastic-beanstalk set up or installed.

Introduction The following procedure was tested on a test instance in AWS, with Redhat and Solr 6.1.0. You may need to adjust the process to your operating system and environment accordingly. Prerequisites Make sure you use RedHat or a similar (Fedora-based) OS. cat /etc/redhat-release disp...

Before the Julia 0.5, there is no way to use conditions inside the array comprehensions. But, it is no longer true. In Julia 0.5 we can use the conditions inside conditions like the following: julia> [x^2 for x in 0:9 if x > 5] 4-element Array{Int64,1}: 36 49 64 81 Source of the ...

To setup JVM options inside elastic beanstalk, your bundle file must be like this: -bundle.zip |--.ebextensions //do not forget the dot at the beginning of the name |--jvm.config |--java_app.jar And, the jvm.config file must be set like this: option_settings: ...

Maximum Path Sum is an algorithm to find out a path such that sum of element(node) of that path is greater than any other path. For example, let's we have a we a triangle as shown below. 3 7 4 2 4 6 8 5 9 3 In above triangle, find the maximum path which has ma...

Using ls() as a filter can sometimes provide produce odd results. If you accidentally forget to pass a filter argument and call ls() with no arguments, you will get a list of every node in the Maya scene: cmds.ls() # [u'time1', u'sequenceManager1', u'hardwareRenderingGlobals', u'renderPartition...