基于话语表示理论的语义分析.pdf

1、基于话语表理论的语义分析 Semantic Parsing in Discourse Representation Theory刘江鸣 云南学2024年0616YSSNLP2024YSSNLP2024YSSNLP2024 YSSNLP2024YSSNLP2024YSSNLP2024Octopuses and Language(Bender and Koller,2020)2communication intent iHearermeaning sexpression eSpeaker knowledgecommunication situation(environments)Speakerme

2、aning sHearerknowledge guess i(Bender and Koller,2020)Emily M.Bender,and Alexander Koller.Climbing towards NLU:On meaning,form,and understanding in the age of data.ACL.2020.YSSNLP2024YSSNLP2024YSSNLP2024 YSSNLP2024YSSNLP2024YSSNLP2024Two Types of Text Understanding 3from Shay Cohen in RISEUnderstand

3、ing,loosely,can refer to two different things:Attaching meaning(representations?)which is divorced of direct denotation(large language model)Attaching meaning which is either executable and has denotation or is grounded in the environment(semantic parsing)Symbolic:interpretableContinuous:gradientYSS

4、NLP2024YSSNLP2024YSSNLP2024 YSSNLP2024YSSNLP2024YSSNLP2024Three Types of Semantics4Distributed semantics(word2vec,LDA,LLM,)Frame semantics(SRL,AMR,)Model-theoretic semantics(MRS,DRT,)YSSNLP2024YSSNLP2024YSSNLP2024 YSSNLP2024YSSNLP2024YSSNLP20245PMB 04/2820Dont touch that blue button.Model-theoretic

5、semantics A special form of truth-conditional semantics Dynamic semantics Compositional First-order logicx1(person.n.01(x1)x1=hearer x2s1e1t1(touch.v.01(e1).)(Kamp,1981)Hans Kamp.1981.A Theory of Truth and Semantic Representation.In Formal Methods in the Study of Language,1,277-322.(Kamp and Reyle,1

6、993)Hans Kamp and Uwe Reyle.1993.From Discourse to Logic;An Introduction to Modeltheoretic Semantics of Natural Language,Formal Logic and Discourse Representation Theory.Kluwer,DordrechtDiscourse Representation Theory(Kamp,1981;Kamp and Reyle,1993)YSSNLP2024YSSNLP2024YSSNLP2024 YSSNLP2024YSSNLP2024Y