6. The method of claim 2 , and further comprising iterating the method with different weight values and recording an accuracy measure of the classifier using a development test set for each weight value.
6. The method of claim 2 , and further comprising iterating the method with different weight values and recording an accuracy measure of the classifier using a development test set for each weight value. 7. The method of claim 6 , and further comprising selecting a weight value that produced the highest relevance score, and training the machine learning classifier using that weight.