3. The method of claim 1 ; wherein the constructing the sub-graph includes: generating the additional nodes related to the one or more of the plurality of nodes; and generating links between the additional nodes and the one or more of the plurality of nodes based on determining that the amount of overlap exceeds a threshold value.
3. The method of claim 1 ; wherein the constructing the sub-graph includes: generating the additional nodes related to the one or more of the plurality of nodes; and generating links between the additional nodes and the one or more of the plurality of nodes based on determining that the amount of overlap exceeds a threshold value. 4. The method of claim 3 , wherein the additional nodes are each assigned an absolute position within the graph that is proximate to the absolute position of each of the plurality of nodes.