15. The system of claim 13 further comprising a similarity measurement engine to compute, via the processor, a similarity between n-grams based on correlation of histograms and distance measurements from the distance measurement engine.
15. The system of claim 13 further comprising a similarity measurement engine to compute, via the processor, a similarity between n-grams based on correlation of histograms and distance measurements from the distance measurement engine. 16. The system of claim 15 wherein the similarity measurement engine is to compute the similarity as a weighted sum of the correlation of histograms and the distance measurements.