A suggestion on the JBLEU class

[magician-david]

The parameter N in the class JBLEU is fixed to 4.

    private static final int N = 4;

Why don't we get the value of N from the constuction like this?

    private static int N;
    public JBLEU(int n_gram) {
        N = n_gram;
    }
    public JBLEU(int n_gram, int verbosity) {
        N = n_gram;
        this.verbosity = verbosity;
    }

In function:

public double score(int[] suffStats, double[] allResults),

     double ngramOrderWeight = 0.25;

should be

     double ngramOrderWeight = 1.0 / N;

What do you think?