# Tag Info

In most of the literature I am familiar with (signal processing), these vectors are considered collectively as rows in a matrix, i.e. $$\mathbf y = \mathbf E \mathbf x$$ where the $(M \times 1)$ vector $\mathbf y$ contains the measurements, i.e. the inner products of the Gaussian vectors $\mathbf e_i$ with $\mathbf x$. The sparse vector $\mathbf x$ is \$(N \...