Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives SDRT and Continuation Semantics (CAuLD project) Nicholas Asher 1 Sylvain Pogodalla 2 1 nicholas.asher@irit.fr IRIT CNRS, Toulouse, France 2 sylvain.pogodalla@loria.fr LORIA/INRIA Nancy–Grand Est, France CAULD – Nancy December 13–14, 2010 Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Outline Discourse Structure and SDRT 1 Discourse Relations SDRT Discourse Dynamics 2 Dynamic Logic Continuation Semantics Advantages of CS 3 Perspectives 4 Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Linguistic Phenomena Example John walked in. � He poured himself a cup of coffee. 1 John fell. � Mary pushed him. 2 We bought the apartment, � but we’ve rented it. 3 Il commence ` a dessiner et peindre en 1943 , � fr´ equente les ateliers de 4 sculpture � puis de peinture de l’ ´ ecole des Beaux-Arts d’ Oran , � o` u il rencontre Guermaz. (ANNODIS corpus) Julie had an excellent meal, � beginning with an elegant and inventive truffes 5 du P´ erigord en premi` ere cuisson comme un petit d´ ejeuner, � followed by some wonderful scallops, � then sweetbreads, � a sumptuous cheese plate, � and ending with a scrumptious dessert. Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Discourse Structure and SDRT [Asher and Lascarides(2003)] Example (Hierarchical structure of the discourse) π 1 ( π 1 ) John had a great evening last night. Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Discourse Structure and SDRT [Asher and Lascarides(2003)] Example (Hierarchical structure of the discourse) π 1 Elaboration ( π 1 ) John had a great evening last night. π 6 ( π 2 ) He had a great meal. π 2 Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Discourse Structure and SDRT [Asher and Lascarides(2003)] Example (Hierarchical structure of the discourse) π 1 Elaboration ( π 1 ) John had a great evening last night. π 6 ( π 2 ) He had a great meal. π 2 ( π 3 ) He ate salmon. Elaboration π 7 π 3 Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Discourse Structure and SDRT [Asher and Lascarides(2003)] Example (Hierarchical structure of the discourse) π 1 Elaboration ( π 1 ) John had a great evening last night. π 6 ( π 2 ) He had a great meal. π 2 ( π 3 ) He ate salmon. ( π 4 ) He devoured lots of cheese. Elaboration π 7 Narration π 3 π 4 Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Discourse Structure and SDRT [Asher and Lascarides(2003)] Example (Hierarchical structure of the discourse) π 1 Elaboration ( π 1 ) John had a great evening last night. π 6 ( π 2 ) He had a great meal. Narration π 2 π 5 ( π 3 ) He ate salmon. ( π 4 ) He devoured lots of cheese. Elaboration π 7 ( π 5 ) He then won a dancing competition. Narration π 3 π 4 Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Discourse Structure and SDRT [Asher and Lascarides(2003)] Example (Hierarchical structure of the discourse) π 1 Elaboration ( π 1 ) John had a great evening last night. π 6 ( π 2 ) He had a great meal. Narration π 2 π 5 ( π 3 ) He ate salmon. ( π 4 ) He devoured lots of cheese. Elaboration π 7 ( π 5 ) He then won a dancing competition. Narration π 3 π 4 Elaboration ( π 1 , π 6 , π 0 ) ∧ Elaboration ( π 2 , π 7 , π 6 ) ∧ Narration ( π 3 , π 4 , π 7 ) ∧ Narration ( π 2 , π 5 , π 6 ) Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Building SDRS’s Segment a text into EDUs Compute attachment points Compute discourse relations between an EDU and its attachment point Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Dynamic Logics in Discourse Technical and Conceptual Issues Non-standard interpretation of formulas using assignment functions (cf. Sylvain’s talk) interactions between syntax, compositional semantics and discourse very separated in [Asher and Lascarides(2003)] Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Dynamic Logics in Discourse Technical and Conceptual Issues Non-standard interpretation of formulas using assignment functions (cf. Sylvain’s talk) interactions between syntax, compositional semantics and discourse very separated in [Asher and Lascarides(2003)] Formal Semanticist or Logician? What are the useful data to feed the context with? How do discourse and sentences combine? What are the semantic recipes of the lexical items Should I design a new logic? Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Dynamic Logics in Discourse Technical and Conceptual Issues Non-standard interpretation of formulas using assignment functions (cf. Sylvain’s talk) interactions between syntax, compositional semantics and discourse very separated in [Asher and Lascarides(2003)] Formal Semanticist or Logician? What are the useful data to feed the context with? How do discourse and sentences combine? What are the semantic recipes of the lexical items Should I design a new logic? Continuation semantics Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Continuation Semantics Principles [de Groote(2006)] � s � Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Continuation Semantics Principles [de Groote(2006)] � s � � np � = ( e → � s � ) → � s � Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Continuation Semantics Principles [de Groote(2006)] � s � � np � = ( e → � s � ) → � s � � n � = e → � s � Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Continuation Semantics Principles [de Groote(2006)] ∆ � s � = γ → ( γ → t ) → t = Ω � np � = ( e → � s � ) → � s � � n � = e → � s � Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Continuation Semantics Principles [de Groote(2006)] ∆ � s � = γ → ( γ → t ) → t = Ω � np � = ( e → � s � ) → � s � � n � = e → � s � Example A man is sleeping. Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Continuation Semantics Principles [de Groote(2006)] ∆ � s � = γ → ( γ → t ) → t = Ω � np � = ( e → � s � ) → � s � � n � = e → � s � Example A man is sleeping. λ i .λ k . ∃ x . ( man x ) ∧ ( sleeping x ) ∧ ( k ( x :: i )) Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Continuation Semantics Principles [de Groote(2006)] ∆ � s � = γ → ( γ → t ) → t = Ω � np � = ( e → � s � ) → � s � � n � = e → � s � Example A man is sleeping. He is snoring. λ i .λ k . ∃ x . ( man x ) ∧ ( sleeping x ) ∧ ( k ( x :: i )) Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Continuation Semantics Principles [de Groote(2006)] ∆ � s � = γ → ( γ → t ) → t = Ω � np � = ( e → � s � ) → � s � � n � = e → � s � Example A man is sleeping. He is snoring. λ i .λ k . ∃ x . ( man x ) ∧ ( sleeping x ) ∧ ( k ( x :: i )) λ i .λ k . ( snoring ( sel i )) ∧ ( k i ) Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
Discourse Structure and SDRT Discourse Dynamics Advantages of CS Perspectives Continuation Semantics Principles [de Groote(2006)] ∆ � s � = γ → ( γ → t ) → t = Ω � np � = ( e → � s � ) → � s � � n � = e → � s � � T . S � = λ i .λ k . � T � i ( λ i ′ . � S � i ′ k ) Example A man is sleeping. He is snoring. λ i .λ k . ∃ x . ( man x ) ∧ ( sleeping x ) ∧ ( k ( x :: i )) λ i .λ k . ( snoring ( sel i )) ∧ ( k i ) Nicholas Asher, Sylvain Pogodalla SDRT and Continuation Semantics
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