42. The method of claim 40 wherein: (a) said third intermediate utility measure is a combination of a second similarity measure for said first document element and said second similarity measure for said second document element and a first normalization constant; and (b) said fourth intermediate utility measure is a combination of said second similarity measure for said second document element and said second similarity measure for said first document element and a second normalization constant.
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.