Let D = {d1,d2,••• ,dl} be a set of l text segments (local contexts), each containing a target VNC (i.e., σvn).
instead of generating a term by document matrix, where each term is tfidf (product of term frequency and inverse document frequency), we compute a term by document matrix MD ∈ ℜ m×l , where each term in the matrix is the product of the projection of a word onto a target VNC and inverse document frequency.