8. New Paradigm in Mahout | Learning Apache Mahout

In-core types

Vector and Matrices are of type in-core or in-memory. We will try out some basic commands to get a feel of the linear algebra operations possible.

Vector

We will first discuss vectors and then cover matrices. We will see some examples of operations that can be performed on vectors.

Initializing a vector inline

Dense vector: The dense vector is a vector with relatively fewer zero elements. On the Mahout command line, please type the following command to initialize a dense vector:

mahout>val denseVec1: Vector = (1.0, 1.1, 1.2)

Each element is prefixed by its index, which starts with 0. The output of the command executed is given as follows:

denseVec1: org.apache.mahout.math.Vector = {0:1.0,1:1.1,2:1.2}

Sparse vector: Sparse vector is a vector with a relatively large number of zero elements. On the Mahout command line, please type the following command to initialize a sparse vector:

mahout>val sparseVec = svec((5 -> 1) :: (10 -> 2.0) :: Nil)

The output of the command...

Tech Concepts

Programming languages

Tech Tools

Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.

Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.

50+ new titles added per month and exclusive early access to books as they are being written.

Learning Apache Mahout

By : Chandramani Tiwary

Learning Apache Mahout

By: Chandramani Tiwary

Overview of this book

In-core types

Vector

Initializing a vector inline

Learning Apache Mahout

By : Chandramani Tiwary

Learning Apache Mahout

By: Chandramani Tiwary

Overview of this book

In-core types

Vector

Initializing a vector inline

Confirmation

Buy this book with your credits?

Submit Your Feedback

Create a Free Account To Continue Reading

Sign in to activate your 7-day free access