Search for tag: "pca"

ML3: Dimensionality Reduction using Principal Component Analysis

In this video, we will learn that we can use Principal Component Analysis (PCA) to find a transformation matrix that minimises reconstruction error for dimensionality reduction. We also show how this…

From  Elliot Crowley on November 5th, 2020 0 likes 17 plays 0  

MLP Lecture 06 - Clip 03 - Data Normalisation

Machine Learning Practical (MLP) Lecture 06, Clip 03 / 05.

From  Pavlos Andreadis on October 24th, 2020 1 likes 204 plays 0  

Unsupervised Learning

Unsupervised Learning

From  Dimitrios Doudesis on June 8th, 2020 0 likes 183 plays 0  

Properties of eigenfaces

Properties of eigenfaces

From  Nigel Goddard on September 25th, 2016 1 likes 1,525 plays 0  

Pros and cons of dimensionality reduction

Pros and cons of dimensionality reduction

From  Nigel Goddard on September 25th, 2016 1 likes 2,146 plays 0  

Principal component analysis

Principal component analysis

From  Nigel Goddard on September 25th, 2016 1 likes 2,226 plays 0  

Linear discriminant analysis

Linear discriminant analysis

From  Nigel Goddard on September 25th, 2016 1 likes 1,637 plays 0  

Classification with PCA features

Classification with PCA features

From  Nigel Goddard on September 25th, 2016 1 likes 1,731 plays 0  

When principal components fail

When principal components fail

From  Nigel Goddard on September 25th, 2016 1 likes 1,644 plays 0  

Eigenface representation

Eigenface representation

From  Nigel Goddard on September 25th, 2016 1 likes 1,734 plays 0  

Eigen-faces

Eigen-faces

From  Nigel Goddard on September 25th, 2016 1 likes 1,923 plays 0  

Principal component analysis for the impatient

Principal component analysis for the impatient

From  Nigel Goddard on September 25th, 2016 1 likes 1,769 plays 0  

How many principal components to use

How many principal components to use

From  Nigel Goddard on September 25th, 2016 1 likes 1,749 plays 0  

Eigenvalue = variance along eigenvector

Eigenvalue = variance along eigenvector

From  Nigel Goddard on September 25th, 2016 1 likes 1,790 plays 0  

Eigenvector = direction of maximum variance

Eigenvector = direction of maximum variance

From  Nigel Goddard on September 25th, 2016 2 likes 2,233 plays 0  

Low-dimensional projections of data

Low-dimensional projections of data

From  Nigel Goddard on September 25th, 2016 0 likes 2,096 plays 0