This paper describes an affinity graph based approach to multi-document summarization. We incorporate a diffusion process to acquire semantic relationships between sentences, and then compute information richness of sentences by a graph rank algorithm on differentiated intra-document links and inter-document links between sentences. A greedy algorithm is employed to impose diversity penalty on sentences and the sentences with both high information richness and high information novelty are chosen into the summary. Experimental results on task 2 of DUC 2002 and task 2 of DUC 2004 demonstrate that the proposed approach outperforms existing state-of-the-art systems.
Improved Affinity Graph Based Multi-Document Summarization
Published 2006 in North American Chapter of the Association for Computational Linguistics
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- Publication year
2006
- Venue
North American Chapter of the Association for Computational Linguistics
- Publication date
2006-06-04
- Fields of study
Computer Science
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