Modality and Negation in NLP

Seminar, Winter Semester 2020-2021

Linguistic phenomena such as modality and negation allow the expression of subjective, or non-factual, aspects of meaning. Modality and negation in particular are challenging both from a theoretical and a computational point of view, due to their interaction with each other and with other aspects of the linguistic context such as mood, tense, and lexis.

In this seminar, we will look at the treatment of modality and negation in a variety of NLP applications that involve deep text understanding. This includes applications that need to discriminate between factual and non-factual information (uncertain facts, opinions, attitudes, emotions, and beliefs), such as information extraction, opinion mining, sentiment analysis, text mining, and question answering, as well as other applications that process the meaning of texts, such as recognizing textual entailment, paraphrasing, and summarization.

Theoretical background on modality, negation, and other scope phenomena will be integrated throughout the course. Students are expected to have taken 1-2 courses in theoretical semantics prior to enrolling.

If you are interested in this course, please send me an email before October 19 to introduce yourself.