Analysis of interrogatives in different domains
Helena Moniz,
R – INESC-ID Lisboa –
Abstract:
The aim of our study is twofold: to quantify the distinct interrogative types in different contexts and to discuss the weight of the linguistic features that best describe these structures, in order to model interrogatives in speech.
In European Portuguese, as in other languages, interrogatives may be sub classified in yes-no questions, wh-questions and tags. These distinctions are accompanied by lexico-syntactic and prosodic features. Yes-no questions have the same syntactic structure of a declarative and may be differentiated by intonation contours; wh-questions have wh-words which make them recognizable; and tags have also distinctive forms, e.g., declarative sentence + negative particle + verb.
State-of-the-art studies on sentence boundary detection and punctuation have discussed the relative weight of the previously mentioned features. Shriberg et al. (1998; 2008) report that prosodic features are more significant than lexical ones and that better results are achieved when combining both features; Wang and Narayanan (2004) claim that results based only on prosodic properties are quite robust; Boakye et al. (2009), analyzing meetings, state that lexico-syntactic features are the most important ones to identify interrogatives. This raises the following question: is the weight of the features dependent on the nature of the corpus and on the most characteristic types of interrogative in each?
This study addresses that question, using three distinct corpora for European Portuguese: broadcast news (61h, 449k words), classroom lectures (27h, 155k words), and map-task dialogues (7h, 61k words). Results will also be presented for newspaper text (148M words).
Date: 2010-May-07 Time: 15:00:00 Room: 336
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We are happy to announce the OLISSIPO Summer School on Computational phylogenetics to analyse the evolution of cells and communities, which will be held in Lisbon, Portugal, at INESC-ID, between July 2-7, 2023.
Keynote speakers:
David Posada, University of Vigo (class)
João Alves, University of Vigo (hands-on)
Nadia El-Mabrouk, Université de Montréal (class)
Mattéo Delabre, Université de Montréal (hands-on)
Ran Libeskind-Hadas, Claremont McKenna College (class and hands-on)
Russell Schwartz, Carnegie Mellon University (class and hands-on)
See the preliminary agenda at: https://olissipo.inesc-id.pt/tree-tango-school
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The registration fee is 250€ for students and OLISSIPO members and 350€ for postdocs or other researchers (meals indicated at the schedule of the school are included, accommodation and flights are not). All details will be made available upon registration.
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Check online for information about past editions: LxMLS 2011, LxMLS 2012, LxMLS 2013, LxMLS 2014, LxMLS 2015, LxMLS 2016, LxMLS 2017, LxMLS 2018, LxMLS 2019, LxMLS 2020, LxMLS 2021, LxMLS 2022 (you can also watch the videos of the lectures for 2016, 2017, 2018, and 2020).
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The ISD 2023 conference held this year also provides an opportunity for researchers and practitioners to promote their research, practical experience, and to discuss issues related to Information Systems through papers, posters, and journal-first paper presentations.
ISD 2023 will be hosted by Instituto Superior Técnico, in Lisbon, Portugal, on August 30–September 1, 2023.