Gaia:
“Modaltasuna eta ukapena hizkuntzaren prozesaketan: oraingo joerak eta etorkizuneko norabideak”
“Modality and negation in natural language processing: current trends and future directions
Hizlaria:
Roser Morante Ikertzailea BIOGRAPH proiektuan (Walter Daelemans-en taldearena)
CLiPS-Computational Linguistics research group University of Antwerp,
Tokia: Informatika Fakultateko Batzar Aretoa
Eguna: Otsailaren 23
Ordua: 16:00
Kokapena:
Hizkuntza-teknologiako zenbait aplikazio berritan saiatzen da testuak ulertzen:
- iritzi-azterketa (nola hitz egiten da testuan? positiboan edo negatiboan?),
- sentimendu-analisia (testua triste edo alaia da?),
- testu-laburpenak
- galderak erantzuteko sistemak.
Horietan guztietan aditzaren modaltasuna eta ukapena arazo latzak izaten dira testua ondo ulertzeko.
Modaltasunaren adibideak: Ahalera: etor daiteke; Baldintza: etorriko balitz; Ondorioa: etorriko nintzateke; Subjuntiboa: etor dadin.Ukapenaren adibidea: ez dator
Zelan aldatzen da esaldiaren esangura aditzaren modua aldatzen bada?Zelan aldatzen da esaldiaren esangura esaldian ezezkoren bat baldin badago?Hor kokatzen da hitzaldia.
Summary:
Research on modality and negation focuses on finding subjective,uncertain and counterfactual information in texts, be it in scientific papers, product reviews, or opinions in blogs. This type of +research is concerned with processing texts at the information level and aims at deep text understanding. Modality and negation are phenomena relevantfor all applications that are concerned with +some form of text understanding, including text mining, sentiment analysis, recognizing textual entailment, information extraction, text summarization, and summarization answering. Hence, the adequate +modeling of these phenomena is of crucial importance to the natural language processing (NLP) community as a whole.
Whereas from a theoretical perspective, the study of modality has a long tradition, only in the recent years have these topics attracted the attention of NLP researchers. Mainly, the development of +sentimental analysis techniques and the growing need of mining biomedical texts have been the causes for the interest in these semantic aspects of language.In this talk I will define modality and +negation from an NLP perspective, I will motivate the need for processing these phenomena,and I will summarize existing research on processing modality and negation, touching on diverse aspects +ranging from task modelling to feature visualization. Finally, I will speculate about future.developments in this research area.
