Using Centroid Keywords and Word Mover's Distance for Single Document Extractive Summarization

Abstract

This paper presents unsupervised method of single document extractive summarization. The main idea behind the method is in selecting sentences based on Word Mover's Distance Similarity between each sentence and set of centroid keywords. This approach leverages both compositional property of word embeddings and advantages of recently discovered powerful text to text distance metric. ROUGE results on DUC 2002 data set showed that quality of produced summaries can compete with well-known state of the art systems. In this work we also discuss limitations of gold summaries in evaluating quality of summarization systems.