Autor: Flickinger, D. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Aligning speech and co-speech gestu re in a constraint-based grammar
Autorzy:: Alahverdzhieva, K.
Lascarides, A.
Flickinger, D.
Tematy:: co-speech gesture
constraint-based grammar
compositional semantics
underspecification; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Podstaw Informatyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/103813.pdf Link otwiera się w nowym oknie
Opis:: This paper concerns the form-meaning mapping of communicative action consisting of speech and improvised co-speech gestures. Based on the findings of previous cognitive and computational approaches, we advance a new theory in which this form-meaning mapping is analysed in a constraint-based grammar. Motivated by observations in naturally occurring examples, we propose several construction rules, which use linguistic form, gesture form and their relative timing to constrain the derivation of a single speech-gesture syntax tree, from which a meaning representation can be composed via standard methods for semantic composition. The paper further reports on implementing these speech-gesture construction rules within the English Resource Grammar (Flickinger 2000). Since gestural form of ten underspecifies its meaning, the logical formulae that are composed via syntax are underspecified so that current models of the semantics/pragmatics interface support the range of possible interpretations of the speech-gesture act in its context of use.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: On different approaches to syntactic analysis into bi-lexical dependencies : An empirical comparison of direct, PCFG-based, and HPSG-based parsers
Autorzy:: Ivanova, A.
Oepen, S.
Dridan, R.
Flickinger, D.
Øvrelid, L.
Lapponi, E.
Tematy:: syntactic dependency parsing
domain variation; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Podstaw Informatyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/103851.pdf Link otwiera się w nowym oknie
Opis:: We compare three different approaches to parsing into syntactic, bilexical dependencies for English: a ‘direct’ data-driven dependenci parser, a statistical phrase structure parser, and a hybrid, ‘deep’ grammar-driven parser. The analyses from the latter two are postconverted to bi-lexical dependencies. Through this ‘reduction’ of All three approaches to syntactic dependency parsers, we determine empirically what performance can be obtained for a common set of dependenci types for English; in- and out-of-domain experimentation ranges over diverse text types. In doing so, we observe what trade-offs apply along three dimensions: accuracy, efficiency, and resilience to domain variation. Our results suggest that the hand-built grammar in one of our parsers helps in both accuracy and cross-domain parsing performance. When evaluated extrinsically in two downstream tasks – negation resolution and semantic dependency parsing – these accuracy gains do sometimes but not always translate into improved end-to-end performance.
Dostawca treści:: Biblioteka Nauki

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