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How to install and use the Datumbox Machine Learning Framework

In this guide we are going to discuss how to install and use the Datumbox Machine Learning framework in your Java projects.

To use the library you need to install 2 binary files: the liblpsolve55 dev library which solves linear programs and the liblpsolve55j which is a Java wrapper.

Even though you can download the files from the official website and follow their installation guide, in this tutorial we try to keep things as simple as possible and provide our own installation guide.

There you will find 5 subfolders that contain the binary libraries for the most popular operating systems in 32bit and 64bit flavours.

If you work on Windows click on win32 or win64 folders, if you are on Unix/Linux click on the ux32 or ux64 folder, while if you use Mac OSX click on the mac folder.

Other versions or distributions might require you to copy them on slightly different location (for example on CentOS 6 uses the /usr/lib64/ folder instead).

Make sure you avoid installing lpsolve by using package managers such as yum or apt-get because it is highly likely you will end up having the wrong version of the library.

Getting started

If a locally installed Grunt is found, the CLI loads the local installation of the Grunt library, applies the configuration from your Gruntfile, and executes any tasks you've requested for it to run.

There are a few ways to create a package.json file for your project: The easiest way to add Grunt and gruntplugins to an existing package.json is with the command npm install <module>

As seen in the following example installing the JSHint task module: Checkout the current available gruntplugins to be installed and used on your project at the plugins page.

Gruntfile is comprised of the following parts: In the following Gruntfile, project metadata is imported into the Grunt config from the project's package.json file and the grunt-contrib-uglify plugin's uglify task is configured to minify a source file and generate a banner comment dynamically using that metadata.

Every Gruntfile (and gruntplugin) uses this basic format, and all of your Grunt code must be specified inside this function: Most Grunt tasks rely on configuration data defined in an object passed to the grunt.initConfig method.

template strings may reference any config properties, configuration data like filepaths and file lists may be specified this way to reduce repetition.

You may store any arbitrary data inside of the configuration object, and as long as it doesn't conflict with properties your tasks require, it will be otherwise ignored.

Here, the banner option is specified, along with a single uglify target named build that minifies a single source file to a single destination file.

As long as a plugin is specified in package.json as a dependency, and has been installed via npm install, it may be enabled inside your Gruntfile with a simple command: Note: the grunt --help command will list all available tasks.

For example, this Gruntfile defines a completely custom default task that doesn't even utilize task configuration: Custom project-specific tasks don't need to be defined in the Gruntfile;

Libraries are a collection of code that makes it easy for you to connect to a sensor, display, module, etc.

Inside the folder will be a .cpp file, a .h file and often a keywords.txt file, examples folder, and other files required by the library.

When you want to add a library manually, you need to download it as a ZIP file, expand it and put in the proper directory.

The library manager is designed to install this ZIP file automatically as explained in the former chapter, but there are cases where you may want to perform the installation process manually and put the library in the libraries folder of your sketchbook by yourself. You

Extract the ZIP file with all its folder structure in a temporary folder, then select the main folder, that should have the library name

Please note: Arduino libraries are managed in three different places: inside the IDE installation folder, inside the core folder and in the libraries folder inside your sketchbook.

The way libraries are chosen during compilation is designed to allow the update of libraries present in the distribution.

It is also important to note that the version of the library you put in your sketchbook may be lower than the one in the distribution or core folders, nevertheless it will be the one used during compilation.

When you select a specific core for your board, the libraries present in the core’s folder are used instead of the same libraries present in the IDE distribution folder. Last,

but not least important is the way the Arduino Software (IDE) upgrades itself: all the files in Programs/Arduino (or the folder where you installed the IDE) are deleted and a new folder is created with fresh content.This is why we recommend that you only install libraries to the sketchbook folder so they are not deleted during the Arduino IDE update process.

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