We conducted an evaluation study to measure how adequate and effective the summaries generated by our system are for our purpose of providing the message and high-level knowledge that one would gain from viewing a graphic.
we were interested in (1) what amount of information is retained by a reader from reading the summary generated by our system, (2) whether someone reading the summary garners the most important knowledge conveyed by the graphic, and (3) whether the knowledge gleaned from the summary is consistent with the actual graphic.