Abstract
This paper proposes a method to support interpretations of difference between two keyword relationships with varying viewpoints in a map animation interface. Much research has been conducted on extracting keyword relationships using hit counts obtained by search engines. Since relationships also exist in the number of viewpoints, we need to understand the differences among relationships that correspond to each viewpoint. Finding keywords whose relationships drastically change is crucial because the value of keywords mainly consists in their relationships in networks. Therefore, this method marks keywords that drastically change their relations when animations between two relationships are shown in the interface. Experimental results showed that the interface using the method supported difference interpretation better than a comparative interface, which outputs no marks or outputs marks randomly.
