L1 - Introduction

Question 1

What is Big Data?

Answer 1

Big Data is high-volume, high-velocity and high-variety information assets that demand cost-effective, innovative forms of information processing for enhanced insight and decision making (Source: Gartner)

Question 2

Why can we now use Big Data?

Answer 2

• Now have ways of storing and retrieving large amounts of Data –> greater computing powers
• Memory requirements can now me met
• Parallel and Cloud computing
• we have good algorithms now

Question 3

What are the three different types of Machine Learning Algorithms?

Answer 3

—Supervised Learning

•The dataset is divided into training and testing –> ( it has been labelled by a group of people of what is meant to be in the image)

—Unsupervised Learning

•The data are not prepared or labelled, the algorithm learns by similarity

—Semi-Supervised Learning