Abstract
Most set expansion algorithms are assumed to independently acquire new instances of each of the different semantic categories even when instances of multiple semantic categories are seeded. However, in the setting of set expansion with multiple semantic categories, we might leverage other types of prior knowledge about semantic categories. In this paper, we present a method of set expansion in case ontological information related to target semantic categories is available. Specifically, the proposed method uses sibling relationships between semantic categories as an additional type of prior knowledge. We demonstrate the effectiveness of using sibling relationships in set expansion on a dataset in which instances and sibling relationships are extracted from Wikipedia in a semi-automatic manner.
