Paper: Linear Text Segmentation Using Affinity Propagation

ACL ID D11-1026
Title Linear Text Segmentation Using Affinity Propagation
Venue Conference on Empirical Methods in Natural Language Processing
Session Main Conference
Year 2011
Authors

This paper presents a new algorithm for lin- ear text segmentation. It is an adaptation of Affinity Propagation, a state-of-the-art clus- tering algorithm in the framework of factor graphs. Affinity Propagation for Segmenta- tion, or APS, receives a set of pairwise simi- larities between data points and produces seg- ment boundaries and segment centres – data points which best describe all other data points within the segment. APS iteratively passes messages in a cyclic factor graph, until conver- gence. Each iteration works with information on all available similarities, resulting in high- quality results. APS scales linearly for realistic segmentation tasks. We derive the algorithm from the original Affinity Propagation formu- lation, and evaluate its performance on topi- cal text segm...