4. The method of claim 2 wherein the overlap threshold comprises a value in a range from zero to one that represents a measure of words used in common by the other text and the at least one text.
2. The method of claim 1 further comprising: comparing the dot-product to a similarity threshold; determining a measure of a number of words used both by the at least one text and the other text; comparing the measure of the number of words to an overlap threshold; and if the dot-product exceeds the similarity threshold and the measure of the number of words also exceeds the overlap threshold, determining the at least one text to be the good nearest neighbor of the other text.