Example illustrating the data structures used to implement the bucketing scheme as described in Sect. 3.6. This example comprises an ensemble of n = 13 entities partitioned in v = 4 buckets, with the bucket labels being designated as A, B, C, D, ordered lexicographically, and using 0-based numeric indices for all other indexing purposes. Entity indices are printed in normal type. The indices of the array entries at which the entity indices are stored in their associated buckets are printed in italic type. Element referral is indicated by dashed lines. Some elements of the D_J tuples were omitted in the visual representation.