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Ensemble audio segmentation for radio and television programmes

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Abstract

State-of-the-art audio segmentation strategies obtain good results when performing simple tasks but its performance is degraded when segmenting real-world scenarios such as radio and television programmes; this issue can be partially solved by performing a fusion of different audio segmentation strategies. Hence, a framework to perform decision-level fusion in the audio segmentation task is presented in this paper. First, the class-conditional probabilities of each audio segmentation strategy are estimated from a confusion matrix obtained by performing audio segmentation in a training dataset. Performance measures are extracted from these class-conditional probabilities, which are used to compute different estimates of the classifier’s reliability; specifically, reliability estimates based on precision, recall, accuracy, F-score and mutual information were proposed. These reliability estimates are used as weights in a weighted majority voting fusion strategy. The validity of the proposed fusion scheme and reliability estimates was assessed in the framework of Albayzin 2010, 2012 and 2014 audio segmentation evaluations, which consisted in segmenting collections of radio and television programmes. The experimental results showed that this simple fusion strategy improves the performance achieved by the individual audio segmentation strategies and by other well-known decision-level fusion strategies.

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Acknowledgments

This work has been supported by the European Regional Development Fund, the Galician Regional Government (GRC2014/024, ’Consolidation of Research Units: AtlantTIC Project’ CN2012/160) and the Spanish Government (‘SpeechTech4All Project’ TEC2012-38939-C03-01).

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Authors and Affiliations

  1. AtlantTIC Research Center, Multimedia Technologies Group, University of Vigo, E.E. Telecomunicación, Campus Universitario de Vigo, S/N, C.P. 36310, Vigo, Spain

    Paula Lopez-Otero, Laura Docio-Fernandez & Carmen Garcia-Mateo

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  1. Paula Lopez-Otero
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  2. Laura Docio-Fernandez
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  3. Carmen Garcia-Mateo
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Correspondence to Paula Lopez-Otero.

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Lopez-Otero, P., Docio-Fernandez, L. & Garcia-Mateo, C. Ensemble audio segmentation for radio and television programmes. Multimed Tools Appl 76, 7421–7444 (2017). https://doi.org/10.1007/s11042-016-3386-2

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  • DOI: https://doi.org/10.1007/s11042-016-3386-2

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