sentence1: where math-w-3-3-0-1 is the number of words in the corpus , and math-w-3-3-0-12 is a predetermined window size .
sentence2: for each word math-w-2-6-2-17 , we construct a vector math-w-2-6-2-24 of size math-w-2-6-2-27 , where math-w-2-6-2-30 is the size of the lexicon .