The effects of analysing cohesion on document summarisation

We argue that in general, the analysis of lexical cohesion factors in a document can drive a summarizer, as well as enable other content characterization tasks. More narrowly, this paper focuses on how one particular cohesion factor--simple lexical repetition--can enhance an existing sentence extraction summarizer, by enabling strategies for overcoming some particularly jarring enduser effects in the summaries, typically due to coherence degradation, readability deterioration, and topical under-representation. Lexical repetition is instrumental to, among other things, the topical make-up of a text, and in our framework a lexical repetition-based model of discourse segmentation, capable of detecting topic shifts, is integrated with a linguistically-aware summarizer utilizing notions of salience and dynamically-adjustable summary size. We show that even by leveraging lexical repetition alone, summaries are of comparable, and under certain conditions better, quality than the ones deliver...

• Type: Conference
• Year: 2000
• Where: COLING
• Authors: Branimir Boguraev, Mary S. Neff
• Keywords: COLING 2000, COLING 2008, Lexical, Lexical Cohesion Factors, Lexical Repetition