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Machine Learning Models

In this article by  Pratap Dangeti , the author of the book  Statistics for Machine Learning , we will take a look at ridge regression and lasso regression in machine learning.

Puppet Server and Agents

In this article by  Martin Alfke , the author of the book  Puppet Essentials - Third Edition , we will following topics: The Puppet server Setting up the Puppet Agent

Scripting FreeSWITCH Lua

In this article,  Giovanni Maruzzelli  and  Anthony Minessale II , the author of the book  FreeSWITCH 1.8 , we execute scripts to answer incoming calls is a common way to implement complex FreeSWITCH applications. When you feel you are putting too much of your brain power into constructing complex conditi onal XML dialplan extensions, it's time to start scripting.

Introduction to the Latest Social Media Landscape and Importance

In this article by  Siddhartha Chatterjee  and  Michal Krystyanczuk , author of the book,  Python Social Media Analytics , starts with a question to you: Have you seen the movie Social Network? If you have not, it could be a good idea to see it before you read this. If you have, you may have seen the success story around Mark Zuckerberg and his company Facebook. This was possible due to power of the platform in connecting, enabling, sharing, and impacting the lives of almost two billion people on this planet.

The Cloud and the DevOps Revolution

In this article by  Nathaniel Felsen , the author of the book  Effective DevOps with AWS , we will be covering the following topics: Thinking in terms of cloud and not infrastructure Deploying in AWS

Writing Modules

In this article,  David Mark Clements , the author of the book,  Node.js Cookbook , we will be covering the following points to introduce you to using Node.js  for exploratory data analysis: Node's module system Initializing a module Writing a module Tooling around modules Publishing modules Setting up a private module repository Best practices

Creating and Calling Subroutines

 In this article by  James Kent Lewis  author for the book  Linux Shell Scripting Bootcamp ,  we will learn   how to create and call subroutines in a script. The topics covered in this article are as follows: Show subroutines that take parameters Mention return codes again and how they work in scripts How to use subroutines First, let's start with a selection of simple but powerful scripts. These are mainly shown to give the reader an idea of just what can be done quickly with a script.

Sewable LEDs in Clothing

In this article by  Jonathan Witts , author of the book  Wearable Projects with Raspberry Pi Zero , we will use sewable LEDs and conductive thread to transform an item of clothing into a sparkling LED piece of wearable tech, controlled with our Pi Zero hidden in the clothing. We will incorporate a Pi Zero and battery into a hidden pocket in the garment and connect our sewable LEDs to the Pi's GPIO pins so that we can write Python code to control the order and timings of the LEDs.

Massive Graphs on Big Data

In this article by Rajat Mehta , author of the book Big Data Analytics with Java , we will learn about graphs. Graphs theory is one of the most important and interesting concepts of computer science. Graphs have been implemented in real life in a lot of use cases. If you use a GPS on your phone or a GPS device and it shows you a driving direction to a place, behind the scene there is an efficient graph that is working for you to give you the best possible direction. In a social network you are connected to your friends and your friends are connected to other friends and so on. This is a massive graph running in production in all the social networks that you use. You can send messages to your friends or follow them or get followed all in this graph. Social networks or a database storing driving directions all involve massive amounts of data and this is not data that can be stored on a single machine, instead this is distributed across a cluster of thousands of nodes or machines. This massive data is nothing but big data and in this article we will learn how data can be represented in the form of a graph so that we make analysis or deductions on top of these massive graphs. In this article, we will cover: A small refresher on the graphs and its basic concepts A small introduction on graph analytics, its advantages and how Apache Spark fits in Introduction on the GraphFrames library that is used on top of Apache Spark Before we dive deeply into each individual section, let's look at the basic graph concepts in brief.

Understanding SAP Analytics Cloud

In this article, Riaz Ahmed , the author of the book Learning SAP Analytics Cloud  provides an overview of this unique cloud-based business intelligence platform. You will learn about the following SAP Analytics Cloud segments Models and data sources Visualization Collaboration Presentation Administration and security

Starting Out

In this article by Chris Simmonds , author of the book Mastering Embedded Linux Programming – Second Edition , you are about to begin working on your next project, and this time it is going to be running Linux. What should you think about before you put finger to keyboard? Let's begin with a high-level look at embedded Linux and see why it is popular, what are the implications of open source licenses, and what kind of hardware you will need to run Linux.

Getting Started with Android Things

In this article by Charbel Nemnom , author of the book Android Things Project , we will cover following topics: Internet of things overview Internet of Things components Android Things overview Things support library Android Things board compatibility How to install Android Things on Raspberry Creating the first Android Things project

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