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Hokkaido University Collection of Scholarly and Academic Papers >
Hokkaido University Sustainability Weeks >
Sustainability Weeks 2009 >
2009 APSIPA Annual Summit and Conference >
Rhetorical Structure Modeling for Lecture Speech Summarization
| Title: | Rhetorical Structure Modeling for Lecture Speech Summarization |
| Authors: | Fung, Pascale Browse this author | | Zhang, Justin Jian Browse this author | | Chan, Ricky Ho Yin Browse this author | | Huang, Shilei Browse this author |
| Keywords: | Rhetorical structure | | speech summarization | | lecture speech |
| Issue Date: | 4-Oct-2009 |
| Publisher: | Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference, International Organizing Committee |
| Journal Title: | Proceedings : APSIPA ASC 2009 : Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference |
| Start Page: | 338 |
| End Page: | 343 |
| Abstract: | We propose an extractive summarization system with a novel non-generative probabilistic framework for speech summarization. One of the most under-utilized features in extractive summarization is rhetorical information -semantically cohesive units that are hidden in spoken documents. We propose Rhetorical-State Hidden Markov Models (RSHMMs) to automatically decode this underlying structure in speech. We show that RSHMMs give a 68.67% ROUGE-L F-measure, a 6.44% absolute increase in lecture speech summarization performance compared to the baseline system without using RSHMM. We further propose an enhanced Rhetorical-State Hidden Markov Model (RSHMM++) for extracting hierarchical structural summaries from lecture speech. We show that RSHMM++ gives a 72.01% ROUGE-L F-measure, a 3.34% absolute increase in lecture speech summarization performance compared to the baseline system without using rhetorical information. We also propose Relaxed DTW for compiling reference summaries. |
| Description: | APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference. 4-7 October 2009. Sapporo, Japan. Oral session: Initiatives in Spoken Document Processing (6 October 2009). |
| Conference Name: | APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference | | 2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議 |
| Conference Place: | Sapporo |
| Type: | proceedings |
| URI: | http://hdl.handle.net/2115/39705 |
| Appears in Collections: | 北海道大学サステナビリティ・ウィーク2009 (Sustainability Weeks 2009) > 2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議 (2009 APSIPA Annual Summit and Conference)
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