📚 Learning Guide
Matrix Decomposition Techniques
easy

In the context of matrix decomposition, which of the following best describes the purpose of singular value decomposition (SVD)?

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Choose the Best Answer

A

To simplify the matrix into orthogonal components for easier interpretation

B

To find the inverse of the matrix directly

C

To compute the determinant of the matrix

D

To combine multiple matrices into one single matrix

Understanding the Answer

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Answer

Singular value decomposition breaks a matrix into three parts: a left‑singular matrix, a diagonal matrix of singular values, and a right‑singular matrix. This lets us see how the matrix stretches space along orthogonal directions, with the singular values telling how much each direction is stretched. By keeping only the largest singular values, we can approximate the original matrix with fewer dimensions, which is useful for compression or noise reduction. For example, if a 3×3 image matrix has singular values 10, 2, 0. 5, we might keep only the first two to create a simpler yet close image representation.

Detailed Explanation

SVD splits a matrix into two rotations and a diagonal scaling. Other options are incorrect because SVD does not give the inverse directly; SVD is not used to compute the determinant.

Key Concepts

Matrix Decomposition
Singular Value Decomposition
Eigen Decomposition
Topic

Matrix Decomposition Techniques

Difficulty

easy level question

Cognitive Level

understand

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