næb
N×B denotes the dimensions of a rectangular array, typically a matrix or data table, with N rows and B columns. The size is read as “N by B.” The first dimension is usually associated with observations or samples, while the second corresponds to features, attributes, or variables. In many contexts, an N×B data matrix X represents N samples each described by B features.
In linear algebra, the transpose of an N×B matrix X has size B×N. If A is N×B
The rank of an N×B matrix is at most min(N,B). If the matrix has full row rank
In data applications, N×B is commonly used to describe a dataset with N observations and B features,