Question

A sparse matrix can be a lower tiangular matrix when

Answer 1

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Triangular matrix is a special kind of square matrix. A square matrix is called lower triangular if all the entries above the main diagonal are zero. Similarly, a square matrix is called upper triangular if all the entries below the main diagonal are zero.

Answer 2

SPARSE MATRIX

A sparse matrix can be a lower triangular matrix when all the non zero elements lie below the leading diagonal.

GETTING TO KNOW MORE ABOUT SPARSE MATRIX:

* Large sparse matrices are frequent in machine learning in general and especially in applied machine learning, such as in data with counts, data encodings that map categories to counts, and even whole subfields of machine learning like natural language processing.

* It is computationally costly to represent and operate with sparse matrices as if they were dense, therefore adopting representations and operations that properly address the matrix sparsity can result in significant performance gains.

* A sparse matrix is one with a large number of zero values. Sparse matrices are distinguished from dense matrices, which have a large number of non-zero values.