基于话语表示理论的语义分析.pdf

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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