Abstract: A method for scaling of indexing data D=(dn, n=1 to N) of a multimedia document having the following steps: (a) at the time t, in grouping the data D in distinct and consecutive groups Dj respectively sized n′j, j varying from 1 to J and in respectively scaling each group Dj by a value d′j according to at least one determined scaling method C and in storing the data D′=(d′j,j=1 to J) thus obtained, (b) subsequently, at the time t′>t, when the number of data resulting from the previous scaling is too great, in grouping the data D′ in distinct and consecutive groups D′k respectively sized Jk, k varying from 1 to K and respectively scaling each group D′k by a value d″k according to a rescaling method C′ compatible with the scaling method C in such a way that each of the data d″k is equivalent to that obtained by applying the scaling method C directly to distinct and consecutive groups of data D respectively sized n&P