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What is the difference between Singular Value Decomposition (SVD) and Principal Component Analysis (PCA)?

What is the difference between Singular Value Decomposition (SVD) and Principal Component Analysis (PCA)?

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Asked by E. Reyes, Last updated: Dec 19, 2024

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E.Emily

E.Emily

E.Emily
E.Emily

Answered Nov 10, 2020

In the analysis of abstract mathematics, such as linear algebra, singular value decomposition is required in the matrix breakdown of a real or complex matrix. Singular value decomposition is valuable in the utilization and application of single processing. SVD stands for singular value decomposition, while PCA stands for Principal Component Analysis.

In global trends, singular value decomposition is essential in the pseudo universe and determines the scope of invalid space and rank of a certain and specified matrix. SVD is necessary to comprehend theories and facts on inverse problems, and it is quite helpful in the identifying process for unique and complex concepts.

On the other hand, principal component analysis is a mathematical practice pertaining to orthogonal transformation to change. A notable examination of connected variables into a pre-arranged value of uncorrelated elements called principle components is later examined. It is also defined in mathematical standards and classifications. The most significant and best variance by any apparent projection of the information is contrasted to the initial coordinate commonly known and called the first principle component. PCA is useful in statistics, specifically in analyzing exploratory data.

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Corné

Corné

Traveler and writer by profession.

Corné
Corné , College student, MBA, Geneva

Answered Nov 03, 2020

Singular Value Decomposition (SVD) and Principal Component Analysis (PCA) are two different processes that are useful in several distinguished fields. SVD is needed when it comes to the study of abstract mathematics, like linear algebra. SVD is also of useful advantage in signal processing applications when it comes to the process of matrix decomposition of a complex matrix. In addition, SVD is important in deriving figures and calculations for the pseudo universe, approximating matrices, and to define and determine the rank, range, and null space of a particular matrix. PCA, on the other hand, refers to a mathematical process that applies an orthogonal transformation to a set of notable observations of possibly linked and connected variables into a pre-arranged value of elements that are linearly uncorrelated called "principal components". PCA can also transform or alters information into a new coordinate system. Principal Component Analysis was invented by Karl Pearson in 1901.
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Robert Hazlewood

Robert Hazlewood

Here to relax my mind a bit

Robert Hazlewood
Robert Hazlewood, Senior Executive, MBA, Louisville

Answered Oct 21, 2020

When you say SVD, this means that you are referring to singular value decomposition. When you say PCA, you are referring to Principal Component Analysis. You will use SVD when you are trying to figure out how you can diagonalize the matrix into different special matrices.

This will make the different matrices easier to work with and manipulate. You can also analyze the matrices better that way. When you say PCA, on the other hand, will be skipping the components that are not too important. PCA can be very effective in making sure that everything will become more accurate.

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Amla Amelia

Amla Amelia

Amla Amelia
Amla Amelia

Answered Mar 02, 2020

Stating the various differences between Singular Value Decomposition (SVD) and Principal Component Analysis (PCA) will be very easy to understand if we know their various areas of applications in mathematics. Singular value decomposition is mostly used in abstract mathematics. It is needed to understand and solve questions that usually come from the algebraic aspect of mathematics. If you have a complex matrix and you are looking for a method that will help you in decomposing the matrix, singular value decomposition should be used.

Principal Component Analysis (PCA), on the other hand, is a mathematical process that is used mostly in orthogonal transformation. It is used to alter and also arrange all variables that are connected to it into a new coordinate system and convert to form a set of variables that are not linearly connected. In other words, whenever Principal Component Analysis is adopted, it will generate a new set of variables that are not linearly correlated from a set of possibly correlated variables.

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