Abstract: A computer-implemented method for interactive visualization of a first set of objects in relation to a second set of objects in a data collection, wherein each of the second set of objects is hierarchically structured includes parsing the first set of objects in relation to the second set of objects in order to generate a mapping between the first set of objects and the second set of objects. The method further includes causing display of a representation of the first set as a central node and a representation of the second set as a set of topic nodes surrounding the central node or surrounded by the central node, the displayed representations constituting a sieve diagram. The method also includes causing display in the sieve diagram of a set of relationships between the first set of objects and the second set of objects by providing a graphical linkage directly or indirectly between the central node and each node that corresponds to a member of the second set.