10. The system of claim 9 wherein updating the set of coordinate vectors by computing coordinate vectors for each remaining media object comprises: holding the coordinate vectors of the initially embedded media objects fixed in the multidimensional space; and for each remaining media object, recursively assigning a coordinate vector to each remaining media object, wherein the assigned coordinate vector is an average of the fixed coordinate vectors of media objects linked to that remaining media object and of the assigned coordinate vectors of each remaining media object linked to that remaining media object in the sparse graph.
10. The system of claim 9 wherein updating the set of coordinate vectors by computing coordinate vectors for each remaining media object comprises: holding the coordinate vectors of the initially embedded media objects fixed in the multidimensional space; and for each remaining media object, recursively assigning a coordinate vector to each remaining media object, wherein the assigned coordinate vector is an average of the fixed coordinate vectors of media objects linked to that remaining media object and of the assigned coordinate vectors of each remaining media object linked to that remaining media object in the sparse graph. 13. The system of claim 10 wherein recursively assigning the coordinate vector to each remaining media object continues for a predetermined number of iterations.