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Unsupervised structured semantic inference for spoken dialog reservation tasks

Alejandra Lorenzo 1 Lina Rojas-Barahona 1 Christophe Cerisara 1
1 SYNALP - Natural Language Processing : representations, inference and semantics
LORIA - NLPKD - Department of Natural Language Processing & Knowledge Discovery
Abstract : This work proposes a generative model to infer latent semantic structures on top of manual speech transcriptions in a spoken dialog reservation task. The proposed model is akin to a standard semantic role labeling system, except that it is unsupervised, it does not rely on any syntactic information and it exploits concepts derived from a domain-specific ontology. The semantic structure is obtained with un- supervised Bayesian inference, using the Metropolis-Hastings sampling algorithm. It is evaluated both in terms of attachment accuracy and purity-collocation for clustering, and compared with strong baselines on the French MEDIA spoken-dialog corpus.
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https://hal.archives-ouvertes.fr/hal-00911017
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Submitted on : Thursday, November 28, 2013 - 3:58:46 PM
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Alejandra Lorenzo, Lina Rojas-Barahona, Christophe Cerisara. Unsupervised structured semantic inference for spoken dialog reservation tasks. SIGDIAL - 14th annual SIGdial Meeting on Discourse and Dialogue - 2013, Aug 2013, Metz, France. pp.12-20. ⟨hal-00911017⟩

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