This article outlines a new method of locating discourse boundaries based on lexical cohesion and a graphical technique called dotplotting. The application of dotplotting to discourse segmentation can be performed either manually, by examining a graph, or automatically, using an optimization algorithm. The results of two experiments involving automatically locating boundaries between a series of concatenated documents are presented. Areas of application and future directions for this work are also outlined.
REF proposed an algorithm based on lexical cohesion in conjunction with a graphical technique, and used information retrieval metrics to evaluate the algorithm's performance in locating boundaries between concatenated news articles.
An Automatic Method Of Finding Topic Boundaries
Annual Meeting Of The Association For Computational Linguistics
Computer Science