17. The computerized system of claim 9 , wherein the similarity measure relates to a first aspect of the content vector element and the dissimilarity measure relates to a second content vector element.
17. The computerized system of claim 9 , wherein the similarity measure relates to a first aspect of the content vector element and the dissimilarity measure relates to a second content vector element. 18. The computerized system of claim 17 , wherein the first content vector element comprises a digital image element and the second content vector element comprises a participant identifier element.