Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10071/19767
Autoria: | Ribeiro, E. Ribeiro, R. de Matos, D. |
Data: | 2019 |
Título próprio: | Reconhecimento de actos de diálogo hierárquicos e multi-etiqueta em dados em Espanhol |
Volume: | 11 |
Número: | 1 |
Paginação: | 17 - 40 |
ISSN: | 1647-0818 |
DOI (Digital Object Identifier): | 10.21814/lm.11.1.278 |
Palavras-chave: | Reconhecimento de actos de diálogo Classificação hierárquica Classificação multi-etiqueta |
Resumo: | Dialog acts reveal the intention behind the utte-red words. Thus, their automatic recognition is im-portant for a dialog system trying to understand itsconversational partner. The study presented in thisarticle approaches that task on the DIHANA corpus,whose three-level dialog act annotation scheme posesproblems which have not been explored in recent stu-dies. In addition to the hierarchical problem, the twolower levels pose multi-label classification problems.Furthermore, each level in the hierarchy refers to adifferent aspect concerning the intention of the spea-ker both in terms of the structure of the dialog and thetask. Also, since its dialogs are in Spanish, it allows usto assess whether the state-of-the-art approaches onEnglish data generalize to a different language. Morespecifically, we compare the performance of differentsegment representation approaches focusing on bothsequences and patterns of words and assess the impor-tance of the dialog history and the relations betweenthe multiple levels of the hierarchy. Concerning thesingle-label classification problem posed by the top le-vel, we show that the conclusions drawn on Englishdata also hold on Spanish data. Furthermore, weshow that the approaches can be adapted to multi-label scenarios. Finally, by hierarchically combiningthe best classifiers for each level, we achieve the bestresults reported for this corpus. |
Arbitragem científica: | yes |
Acesso: | Acesso Aberto |
Aparece nas coleções: | IT-RN - Artigos em revistas científicas nacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
document.pdf | Versão Editora | 593,92 kB | Adobe PDF | Ver/Abrir |
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.