29. The method of claim 19 further comprising the steps of: generating a second representation of each of said elements; for the selected pairs of documents, determining a second utility measure based on the respective second representation of the plurality of elements for the documents in that pair.
29. The method of claim 19 further comprising the steps of: generating a second representation of each of said elements; for the selected pairs of documents, determining a second utility measure based on the respective second representation of the plurality of elements for the documents in that pair. 40. The method of claim 29 wherein said step of determining a second utility measure further comprises the following steps: determining a third intermediate utility measure; determining a fourth intermediate utility measure; selecting a particular intermediate utility measure from said third intermediate utility measure and said fourth intermediate utility measure as said second utility measure.