I think this is the problem that you're running into, though maybe a person
with more expertise can confirm...
ZP, If you look at section 5.1 of the Zhai Lafferty paper (
http://www.cs.cmu.edu/~lafferty/pub/smooth-tois.ps), they note that the
"term weight is log(1+(1-\lambda)p_ml(q_i|d) / \lamdba
Hi,
I have the same question related to LMJelinekMercerSimiliarity class.
protected float score(BasicStats stats, float freq, float docLen) {
return stats.getTotalBoost() *
(float)Math.log(1 + ((1 - lambda) * freq / docLen) / (lambda *
((LMStats)stats).getCollectionProbability()));
